+++ /dev/null
-This document details the changes between this version, bash-4.3-alpha,
-and the previous version, bash-4.2-release.
-
-1. Changes to Bash
-
-a. Fixed several bugs concerning incomplete bracket expressions in filename
- generation (globbing) patterns.
-
-b. Fixed a bug with single quotes and WORD in ${param op WORD} when running
- in Posix mode.
-
-c. Fixed a bug that caused the pattern removal and pattern substitution word
- expansions and case statement word expansion to not match the empty string.
-
-d. Fixed a bug that caused the tzset() function to not work after changing
- the TZ enviroment variable.
-
-e. Fixed a bug that caused the RHS of an assignment statement to undergo
- word splitting when it contained an unquoted $@.
-
-f. Fixed bugs that caused the shell to not react to a SIGINT sent while
- waiting for a child process to exit.
-
-g. Bash doesn't try to run things in a signal handler context when it gets a
- signal (SIGINT/SIGHUP/etc) while reading input using readline but still
- be responsive to terminating signals.
-
-h. Fixed a bug that caused bash to go into an infinite loop if a filename
- to be matched contained an invalid multibyte character.
-
-i. Fixed a bug that caused PS4 to end up being truncated if it is longer
- than 128 bytes.
-
-j. Fixed a bug that caused brace expansion to not skip over double-quoted
- command substitution.
-
-k. System-specific updates for: DJGPP, HP/UX, Mac OS X
-
-l. Fixed a bug in displaying commands that caused redirections to be associated
- with the wrong part of the command.
-
-m. Fixed the coproc cleanup to unset the appropriate shell variables when a
- coproc terminates.
-
-n. Fixed a bug that caused `fc' to dump core due to incorrect calculation of
- the last history entry.
-
-o. Added workarounds for FreeBSD's implementation of faccessat/eaccess and
- `test -x'.
-
-p. Fixed a bug that caused the shell to not match patterns containing
- control-A.
-
-q. Fixed a bug that could result in doubled error messages when the `printf'
- builtin got a write error.
-
-r. Fixed a bug that caused the shell to not correctly expand words containing
- multiple consecutive quoted empty strings (""""""aa).
-
-s. Fixed a bug that caused the shell to not correctly parse multi-line
- process substitutions containing comments and quoted strings.
-
-t. Fixed a problem with the bash malloc's internal idea of the top of the
- memory heap that resulted in incorrect decisions to try to reduce the
- break and give memory back to the kernel.
-
-u. There are changes to the expansions peformed on compound array assignments,
- in an effort to make foo=( [ind1]=bar [ind2]=baz ) identical to
- foo[ind1]=bar foo[ind2]=baz.
-
-v. Bash now reports an error if `read -a name' is used when `name' is an
- existing associative array.
-
-w. Fixed a bug that allowed an attempted assignment to a readonly variable
- in an arithmetic expression to not return failure.
-
-x. Fixed several bugs that caused completion functions to be invoked even when
- the cursor was before the first word in the command.
-
-y. Fixed a bug that caused parsing a command substitution to overwrite the
- parsing state associated with the complete input line.
-
-z. Fixed several bugs with the built-in snprintf replacement and field widths
- and floating point.
-
-aa. Fixed a bug that caused incorrect offset calculations and input buffer
- corruption when reading files longer than 2^31 bytes.
-
-bb. Fixed several bugs where bash performed arithmetic evaluation in contexts
- where evaluation is suppressed.
-
-cc. Fixed a bug that caused bash to close FIFOs used for process substitution
- too early when a shell function was executing, but protect against using
- all file descriptors when the shell functions are invoked inside loops.
-
-dd. Added checks for printable (and non-printable) multibyte characters for
- use in error messages.
-
-ee. Fixed a bug that caused ^O (operate-and-get-next) to not work correctly
- at the end of the history list.
-
-ff. Fixed a bug that caused command-oriented history to incorrectly combine
- here documents into one line.
-
-gg. Fixed a bug that caused importing SHELLOPTS from the environment into a
- Posix-mode shell to print an error message and refuse to parse it.
-
-hh. Fixed a bug that caused the shell to delete an extra history entry when
- using `history -s'.
-
-ii. Fixed a bug that caused floating-point exceptions and overflow errors
- for the / and % arithmetic operators when using INTMAX_MIN and -1.
-
-jj. Fixed a bug that caused parsing errors when reading an arithmetic for
- loop inside a command substitution.
-
-kk. Fixed a bug that caused a readonly function to be unset when unset was
- called without the -f or -v option.
-
-ll. Fixed several bugs in the code that quotes characters special to regular
- expressions when used in a quoted string on the RHS of the =~ operator
- to the [[ command.
-
-mm. Fixed a bug that caused redirections to fail because the file descriptor
- limit was set to a value less than 10.
-
-nn. Fixed a bug that caused the `read' builtin to execute code in a signal
- handler context if read timed out.
-
-oo. Fixed a bug that caused extended globbing patterns to not match files
- beginning with `.' correctly when a `.' was explicitly supplied in the
- pattern.
-
-pp. Fixed a bug that caused key sequences longer than two characters to not
- work when used with `bind -x'.
-
-qq. Fixed a bug that resulted in redefined functions having the wrong source
- file names in BASH_SOURCE.
-
-rr. Fixed a bug that caused the read builtin to assign null strings to variables
- when using `read -N', which caused core dumps when referenced
-
-ss. Fixed a bug that caused `bash -m script' to not enable job control while
- running the script.
-
-tt. Fixed a bug that caused `printf -v var' to dump core when used with the
- %b format code.
-
-uu. Fixed a bug that caused the shell to exit with the wrong status if -e was
- active and the shell exited on a substitution error.
-
-vv. Fixed a bug that caused the shell to seg fault if an array variable with
- the same name as an existing associative array was implicitly created by
- an assignment (declare a[n]=b).
-
-ww. Fixed a bug that caused a redirection to misbehave if the number specified
- for a file descriptor overflows an intmax_t.
-
-xx. Fixed several bugs with the handling of valid and invalid unicode character
- values when used with the \u and \U escape sequences to printf and $'...'.
-
-yy. Fixed a bug that caused tildes to not be escaped in expanded filenames,
- making them subject to later expansion.
-
-zz. When using the pattern substitution word expansion, bash now runs the
- replacement string through quote removal, since it allows quotes in that
- string to act as escape characters. This is not backwards compatible, so
- it can be disabled by setting the bash compatibility mode to 4.2.
-
-aaa. Fixed the rest of the cases where the shell runs non-allowed code in a
- signal handler context.
-
-bbb. Fixed a bug that caused spurious DEL characters (\177) to appear in
- double-quoted expansion where the RHS is evaluated to the empty string.
-
-ccc. Fixed a bug that caused the use of the shell's internal random number
- generator for temporary file names to perturb the random number
- sequence.
-
-ddd. Fixed several bugs that caused `declare -g' to not set the right global
- variables or to misbehave when declaring global indexed arrays.
-
-eee. Fixed a logic bug that caused extended globbing in a multibyte locale to
- cause failures when using the pattern substititution word expansions.
-
-fff. Fixed a bug that caused the `lastpipe' option to corrupt the file
- descriptor used to read the script.
-
-ggg. Fixed a bug that causes the shell to delete DEL characters in the
- expanded value of variables used in the same quoted string as variables
- that expand to nothing.
-
-hhh. Fixed a bug that caused the shell to assign the wrong value from an
- assignment like (( x=7 )) when `x' was an existing array variable.
-
-iii. Fixed a bug that caused the shell to misbehave when generating sequences
- and the boundary values overflow an intmax_t.
-
-jjj. Fixed a bug caused expansion errors if an expansion of "$@" appeared
- next to another expansion (e.g.. "${@}${x}").
-
-kkk. Fixed a potential buffer overflow bug when performing /dev/fd expansion.
-
-lll. Fixed a bug that resulted in an extra semicolon being added to compound
- assignments when they were added to the history list.
-
-mmm. Fixed a bug that caused mapfile to read one extra line from the input.
-
-nnn. Fixed a bug that caused the mail checking code to use uninitialized
- values.
-
-ooo. Fixed a bug that prevented history timestamps from being saved if the
- history comment character is unset.
-
-ppp. Fixed a bug that caused the case-modifying expansions to not work with
- multibyte characters.
-
-qqq. Fixed a bug that caused the edit-and-execute bindable readline command
- to see the wrong data if invoked in the middle of a multi-line quoted
- string.
-
-rrr. Fixed a bug that resulted in the shell returning the wrong exit status
- for a background command on systems that recycle PIDs very quickly.
-
-sss. Fixed a bug that caused asynchronous group commands to not run any EXIT
- trap defined in the body of the command.
-
-ttt. Fixed a bug that caused `eval "... ; return"' to not clean up properly.
-
-uuu. Fixed a bug that caused the shell to dump core if `read' reads an escaped
- IFS whitespace character.
-
-vvv. Fixed a bug that caused BASH_COMMAND to be set to an incorrect value when
- executing a (...) subshell.
-
-www. Fixed a couple of pointer aliasing bugs with the token string in arithmetic
- evaluation.
-
-xxx. Fixed a bug with parsing multi-line command substitutions when reading
- the `do' keyword followed by whitespace.
-
-yyy. Fixed a bug that caused the shell to seg fault if the time given to the
- printf %(...)T format overflowed the value accepted by localtime(3).
-
-zzz. Fixed a problem with displaying help topics in two columns when the
- translated text contained multibyte characters.
-
-aaaa. Fixed a bug with the extended globbing pattern matcher where a `*' was
- followed by a negated extended glob pattern.
-
-bbbb. Fixed a race condition with short-lived coproc creation and reaping that
- caused the child process to be reaped before the various coproc shell
- variables were initialized.
-
-cccc. Fixed a bug where turning off `errexit' in command substitution subshells
- was not reflected in $SHELLOPTS.
-
-dddd. Partially fixed an inconsistency in how the shell treated shell
- functions run from an EXIT trap.
-
-eeee. Fixed a bug in how the shell invalidated FIFOs used for process
- substitution when executing a pipeline (once rather than in every child).
-
-ffff. Fixed a bug that occurred when expanding a special variable ($@, $*)
- within double quotes and the expansion resulted in an empty string.
-
-gggg. Fixed bugs with executing a SIGCHLD trap handler to make sure that it's
- executed once per exited child.
-
-hhhh. Fixed a bug that caused `declare' and `test' to find variables that
- had been given attributes but not assigned values. Such variables are
- not set.
-
-iiii. Fixed a bug that caused commands in process substitutions to not look in
- the local temporary environment when performing word expansions.
-
-jjjj. Fixed several problems with globstar expansions (**/**) returning null
- filenames and multiple instances of the same pathname.
-
-kkkk. Fixed an oversight that did not allow the exit status of `coproc' to
- be inverted using `!'.
-
-llll. Fixed a bug that caused the -e option to be re-enabled using `set -e'
- even when executing in a context where -e is ignored.
-
-mmmm. Fixed a (mostly theoretical) bug with input lines longer than SIZE_MAX.
-
-nnnn. Fixed a bug that could result in double evaluation of command
- substitutions when they appear in failed redirections.
-
-oooo. Fixed a bug that could cause seg faults during `mapfile' callbacks if
- the callback unsets the array variable mapfile is using.
-
-pppp. Fixed several problems with variable assignments using ${var:=value}
- when the variable assignment is supposed to have side effects.
-
-qqqq. Fixed a bug that caused a failure of an assignment statement preceding a
- builtin caused the next invocation of a special builtin to exit the shell.
-
-rrrr. Fixed several problems with IFS when it appears in the temporary environment
- and is used in redirections.
-
-ssss. Fixed a problem that caused IFS changes using ${IFS:=value} to modify
- how preceding expansions were split.
-
-tttt. Fixed a problem that caused subshells to not run an EXIT trap they set.
-
-uuuu. Fixed a problem that caused shells started in posix mode to attempt to
- import shell functions with invalid names from the environment. We now
- print a warning.
-
-vvvv. Worked around a kernel problem that caused SIGCHLD to interrupt open(2)
- on a FIFO used for process substitution, even if the SIGCHLD handler was
- installed with the SA_RESTART flag.
-
-wwww. Fixed a problem that resulted in inconsistent expansion of $* and ${a[*]}.
-
-xxxx. Fixed a problem that caused `read -t' to crash when interrupted by
- SIGINT.
-
-yyyy. Fixed a problem that caused pattern removal to fail randomly because the
- pattern matcher read beyond the end of a string.
-
-zzzz. Fixed a bug that caused core dumps when shell functions tried to create
- local shadow copies of special variables like GROUPS.
-
-aaaaa. Fixed a bug that caused SIGTERM to be occasionally lost by children of
- interactive shells when it arrived before the child process reset the
- handler from SIG_DFL.
-
-bbbbb. Fixed a bug that caused redirections like <&n- to leave file descriptor
- n closed if executed with a builtin command.
-
-2. Changes to Readline
-
-a. Fixed a bug that did not allow the `dd', `cc', or `yy' vi editing mode
- commands to work on the entire line.
-
-b. Fixed a bug that caused redisplay problems with prompts longer than 128
- characters and history searches.
-
-c. Fixed a bug that caused readline to try and run code to modify its idea
- of the screen size in a signal handler context upon receiving a SIGWINCH.
-
-d. Fixed a bug that caused the `meta' key to be enabled beyond the duration
- of an individual call top readline().
-
-e. Added a workaround for a wcwidth bug in Mac OS X that caused readline's
- redisplay to mishandle zero-width combining characters.
-
-f. Fixed a bug that caused readline to `forget' part of a key sequence when
- a multiple-key sequence caused it to break out of an incremental search.
-
-g. Fixed bugs that caused readline to execute code in a signal handler
- context if interrupted while reading from the file system during completion.
-
-h. Fixed a bug that caused readline to `forget' part of a key sequence when
- reading an unbound multi-character key sequence.
-
-i. Fixed a bug that caused Readline's signal handlers to be installed beyond
- the bounds of a single call to readline().
-
-j. Fixed a bug that caused the `.' command to not redo the most recent `R'
- command in vi mode.
-
-k. Fixed a bug that caused ignoring case in completion matches to result in
- readline using the wrong match.
-
-l. Paren matching now works in vi insert mode.
-
-m. Fix menu-completion to make show-all-if-ambiguous and menu-complete-display-prefix
- work together.
-
-n. Fixed a bug that didn't allow the `cc', `dd', or `yy' commands to be redone
- in vi editing mode.
-
-o. Fixed a bug that caused the filename comparison code to not compare
- multibyte characters correctly when using case-sensitive or case-mapping
- comparisons.
-
-p. Fixed the input reading loop to call the input hook function only when there
- is no terminal input available.
-
-q. Fixed a bug that caused binding a macro to a multi-character key sequence
- where the sequence and macro value share a common prefix to not perform
- the macro replacement.
-
-r. Fixed several redisplay errors with multibyte characters and prompts
- containing invisible characters when using horizontal scrolling.
-
-s. Fixed a bug that caused redisplay errors when trying to overwrite
- existing characters using multibyte characters.
-
-3. New Features in Bash
-
-a. The `helptopic' completion action now maps to all the help topics, not just
- the shell builtins.
-
-b. The `help' builtin no longer does prefix substring matching, so `help read'
- does not match `readonly'.
-
-c. The shell can be compiled to not display a message about processes that
- terminate due to SIGTERM.
-
-d. Non-interactive shells now react to the setting of checkwinsize and set
- LINES and COLUMNS after a foreground job exits.
-
-e. There is a new shell option, `globasciiranges', which, when set to on,
- forces globbing range comparisons to use character ordering as if they
- were run in the C locale.
-
-f. There is a new shell option, `direxpand', which makes filename completion
- expand variables in directory names in the way bash-4.1 did.
-
-g. In Posix mode, the `command' builtin does not change whether or not a
- builtin it shadows is treated as an assignment builtin.
-
-h. The `return' and `exit' builtins accept negative exit status arguments.
-
-i. The word completion code checks whether or not a filename containing a
- shell variable expands to a directory name and appends `/' to the word
- as appropriate. The same code expands shell variables in command names
- when performing command completion.
-
-j. In Posix mode, it is now an error to attempt to define a shell function
- with the same name as a Posix special builtin.
-
-k. When compiled for strict Posix conformance, history expansion is disabled
- by default.
-
-l. The history expansion character (!) does not cause history expansion when
- followed by the closing quote in a double-quoted string.
-
-m. `complete' and its siblings compgen/compopt now takes a new `-o noquote'
- option to inhibit quoting of the completions.
-
-n. Setting HISTSIZE to a value less than zero causes the history list to be
- unlimited (setting it 0 zero disables the history list).
-
-o. Setting HISTFILESIZE to a value less than zero causes the history file size
- to be unlimited (setting it to 0 causes the history file to be truncated
- to zero size).
-
-p. The `read' builtin now skips NUL bytes in the input.
-
-q. There is a new `bind -X' option to print all key sequences bound to Unix
- commands.
-
-r. When in Posix mode, `read' is interruptible by a trapped signal. After
- running the trap handler, read returns 128+signal and throws away any
- partially-read input.
-
-s. The command completion code skips whitespace and assignment statements
- before looking for the command name word to be completed.
-
-t. The build process has a new mechanism for constructing separate help files
- that better reflects the current set of compilation options.
-
-u. The -nt and -ot options to test now work with files with nanosecond
- timestamp resolution.
-
-v. The shell saves the command history in any shell for which history is
- enabled and HISTFILE is set, not just interactive shells.
-
-w. The shell has `nameref' variables and new -n(/+n) options to declare and
- unset to use them, and a `test -R' option to test for them.
-
-x. The shell now allows assigning, referencing, and unsetting elements of
- indexed arrays using negative subscripts (a[-1]=2, echo ${a[-1]}) which
- count back from the last element of the array.
-
-y. The {x}<word redirection feature now allows words like {array[ind]} and
- can use variables with special meanings to the shell (e.g., BASH_XTRACEFD).
-
-z. There is a new CHILD_MAX special shell variable; its value controls the
- number of exited child statues the shell remembers.
-
-aa. There is a new configuration option (--enable-direxpand-default) that
- causes the `direxpand' shell option to be enabled by default.
-
-bb. Bash does not do anything special to ensure that the file descriptor
- assigned to X in {x}<foo remains open after the block containing it
- completes.
-
-cc. The `wait' builtin has a new `-n' option to wait for the next child to
- change status.
-
-dd. The `printf' %(...)T format specifier now uses the current time if no
- argument is supplied.
-
-ee. There is a new variable, BASH_COMPAT, that controls the current shell
- compatibility level.
-
-ff. The `popd' builtin now treats additional arguments as errors.
-
-gg. The brace expansion code now treats a failed sequence expansion as a
- simple string and will continue to expand brace terms in the remainder
- of the word.
-
-4. New Features in Readline
-
-a. Readline is now more responsive to SIGHUP and other fatal signals when
- reading input from the terminal or performing word completion but no
- longer attempts to run any not-allowable functions from a signal handler
- context.
-
-b. There are new bindable commands to search the history for the string of
- characters between the beginning of the line and the point
- (history-substring-search-forward, history-substring-search-backward)
-
-c. Readline allows quoted strings as the values of variables when setting
- them with `set'. As a side effect, trailing spaces and tabs are ignored
- when setting a string variable's value.
-
-d. The history library creates a backup of the history file when writing it
- and restores the backup on a write error.
-
-e. New application-settable variable: rl_filename_stat_hook: a function called
- with a filename before using it in a call to stat(2). Bash uses it to
- expand shell variables so things like $HOME/Downloads have a slash
- appended.
-
-f. New bindable function `print-last-kbd-macro', prints the most-recently-
- defined keyboard macro in a reusable format.
-
-g. New user-settable variable `colored-stats', enables use of colored text
- to denote file types when displaying possible completions (colored analog
- of visible-stats).
-
-h. New user-settable variable `keyseq-timout', acts as an inter-character
- timeout when reading input or incremental search strings.
-
-i. New application-callable function: rl_clear_history. Clears the history list
- and frees all readline-associated private data.
-
-j. New user-settable variable, show-mode-in-prompt, adds a characters to the
- beginning of the prompt indicating the current editing mode.
-
-k. New application-settable variable: rl_input_available_hook; function to be
- called when readline detects there is data available on its input file
- descriptor.
-
-l. Readline calls an application-set event hook (rl_event_hook) after it gets
- a signal while reading input (read returns -1/EINTR but readline does not
- handle the signal immediately) to allow the application to handle or
- otherwise note it.
-
-m. If the user-settable variable `history-size' is set to a value less than
- 0, the history list size is unlimited.
-
-n. New application-settable variable: rl_signal_event_hook; function that is
- called when readline is reading terminal input and read(2) is interrupted
- by a signal. Currently not called for SIGHUP or SIGTERM.
+++ /dev/null
- GNU GENERAL PUBLIC LICENSE
- Version 2, June 1991
-
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.
- 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-The Free Software Foundation has exempted Bash from the requirement of
-Paragraph 2c of the General Public License. This is to say, there is
-no requirement for Bash to print a notice when it is started
-interactively in the usual way. We made this exception because users
-and standards expect shells not to print such messages. This
-exception applies to any program that serves as a shell and that is
-based primarily on Bash as opposed to other GNU software.
-
- Preamble
-
- The licenses for most software are designed to take away your
-freedom to share and change it. By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users. This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it. (Some other Free Software Foundation software is covered by
-the GNU Library General Public License instead.) You can apply it to
-your programs, too.
-
- When we speak of free software, we are referring to freedom, not
-price. Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-this service if you wish), that you receive source code or can get it
-if you want it, that you can change the software or use pieces of it
-in new free programs; and that you know you can do these things.
-
- To protect your rights, we need to make restrictions that forbid
-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
-distribute copies of the software, or if you modify it.
-
- For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must give the recipients all the rights that
-you have. You must make sure that they, too, receive or can get the
-source code. And you must show them these terms so they know their
-rights.
-
- We protect your rights with two steps: (1) copyright the software, and
-(2) offer you this license which gives you legal permission to copy,
-distribute and/or modify the software.
-
- Also, for each author's protection and ours, we want to make certain
-that everyone understands that there is no warranty for this free
-software. If the software is modified by someone else and passed on, we
-want its recipients to know that what they have is not the original, so
-that any problems introduced by others will not reflect on the original
-authors' reputations.
-
- Finally, any free program is threatened constantly by software
-patents. We wish to avoid the danger that redistributors of a free
-program will individually obtain patent licenses, in effect making the
-program proprietary. To prevent this, we have made it clear that any
-patent must be licensed for everyone's free use or not licensed at all.
-
- The precise terms and conditions for copying, distribution and
-modification follow.
-\f
- GNU GENERAL PUBLIC LICENSE
- TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
-
- 0. This License applies to any program or other work which contains
-a notice placed by the copyright holder saying it may be distributed
-under the terms of this General Public License. The "Program", below,
-refers to any such program or work, and a "work based on the Program"
-means either the Program or any derivative work under copyright law:
-that is to say, a work containing the Program or a portion of it,
-either verbatim or with modifications and/or translated into another
-language. (Hereinafter, translation is included without limitation in
-the term "modification".) Each licensee is addressed as "you".
-
-Activities other than copying, distribution and modification are not
-covered by this License; they are outside its scope. The act of
-running the Program is not restricted, and the output from the Program
-is covered only if its contents constitute a work based on the
-Program (independent of having been made by running the Program).
-Whether that is true depends on what the Program does.
-
- 1. You may copy and distribute verbatim copies of the Program's
-source code as you receive it, in any medium, provided that you
-conspicuously and appropriately publish on each copy an appropriate
-copyright notice and disclaimer of warranty; keep intact all the
-notices that refer to this License and to the absence of any warranty;
-and give any other recipients of the Program a copy of this License
-along with the Program.
-
-You may charge a fee for the physical act of transferring a copy, and
-you may at your option offer warranty protection in exchange for a fee.
-
- 2. You may modify your copy or copies of the Program or any portion
-of it, thus forming a work based on the Program, and copy and
-distribute such modifications or work under the terms of Section 1
-above, provided that you also meet all of these conditions:
-
- a) You must cause the modified files to carry prominent notices
- stating that you changed the files and the date of any change.
-
- b) You must cause any work that you distribute or publish, that in
- whole or in part contains or is derived from the Program or any
- part thereof, to be licensed as a whole at no charge to all third
- parties under the terms of this License.
-
- c) If the modified program normally reads commands interactively
- when run, you must cause it, when started running for such
- interactive use in the most ordinary way, to print or display an
- announcement including an appropriate copyright notice and a
- notice that there is no warranty (or else, saying that you provide
- a warranty) and that users may redistribute the program under
- these conditions, and telling the user how to view a copy of this
- License. (Exception: if the Program itself is interactive but
- does not normally print such an announcement, your work based on
- the Program is not required to print an announcement.)
-\f
-These requirements apply to the modified work as a whole. If
-identifiable sections of that work are not derived from the Program,
-and can be reasonably considered independent and separate works in
-themselves, then this License, and its terms, do not apply to those
-sections when you distribute them as separate works. But when you
-distribute the same sections as part of a whole which is a work based
-on the Program, the distribution of the whole must be on the terms of
-this License, whose permissions for other licensees extend to the
-entire whole, and thus to each and every part regardless of who wrote it.
-
-Thus, it is not the intent of this section to claim rights or contest
-your rights to work written entirely by you; rather, the intent is to
-exercise the right to control the distribution of derivative or
-collective works based on the Program.
-
-In addition, mere aggregation of another work not based on the Program
-with the Program (or with a work based on the Program) on a volume of
-a storage or distribution medium does not bring the other work under
-the scope of this License.
-
- 3. You may copy and distribute the Program (or a work based on it,
-under Section 2) in object code or executable form under the terms of
-Sections 1 and 2 above provided that you also do one of the following:
-
- a) Accompany it with the complete corresponding machine-readable
- source code, which must be distributed under the terms of Sections
- 1 and 2 above on a medium customarily used for software interchange; or,
-
- b) Accompany it with a written offer, valid for at least three
- years, to give any third party, for a charge no more than your
- cost of physically performing source distribution, a complete
- machine-readable copy of the corresponding source code, to be
- distributed under the terms of Sections 1 and 2 above on a medium
- customarily used for software interchange; or,
-
- c) Accompany it with the information you received as to the offer
- to distribute corresponding source code. (This alternative is
- allowed only for noncommercial distribution and only if you
- received the program in object code or executable form with such
- an offer, in accord with Subsection b above.)
-
-The source code for a work means the preferred form of the work for
-making modifications to it. For an executable work, complete source
-code means all the source code for all modules it contains, plus any
-associated interface definition files, plus the scripts used to
-control compilation and installation of the executable. However, as a
-special exception, the source code distributed need not include
-anything that is normally distributed (in either source or binary
-form) with the major components (compiler, kernel, and so on) of the
-operating system on which the executable runs, unless that component
-itself accompanies the executable.
-
-If distribution of executable or object code is made by offering
-access to copy from a designated place, then offering equivalent
-access to copy the source code from the same place counts as
-distribution of the source code, even though third parties are not
-compelled to copy the source along with the object code.
-\f
- 4. You may not copy, modify, sublicense, or distribute the Program
-except as expressly provided under this License. Any attempt
-otherwise to copy, modify, sublicense or distribute the Program is
-void, and will automatically terminate your rights under this License.
-However, parties who have received copies, or rights, from you under
-this License will not have their licenses terminated so long as such
-parties remain in full compliance.
-
- 5. You are not required to accept this License, since you have not
-signed it. However, nothing else grants you permission to modify or
-distribute the Program or its derivative works. These actions are
-prohibited by law if you do not accept this License. Therefore, by
-modifying or distributing the Program (or any work based on the
-Program), you indicate your acceptance of this License to do so, and
-all its terms and conditions for copying, distributing or modifying
-the Program or works based on it.
-
- 6. Each time you redistribute the Program (or any work based on the
-Program), the recipient automatically receives a license from the
-original licensor to copy, distribute or modify the Program subject to
-these terms and conditions. You may not impose any further
-restrictions on the recipients' exercise of the rights granted herein.
-You are not responsible for enforcing compliance by third parties to
-this License.
-
- 7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
-conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License. If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all. For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
-
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
-
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
-implemented by public license practices. Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
-
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
-\f
- 8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded. In such case, this License incorporates
-the limitation as if written in the body of this License.
-
- 9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time. Such new versions will
-be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
-
-Each version is given a distinguishing version number. If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation. If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
-
- 10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission. For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this. Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
-
- NO WARRANTY
-
- 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
-
- 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
-
- END OF TERMS AND CONDITIONS
-\f
- Appendix: How to Apply These Terms to Your New Programs
-
- If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
- To do so, attach the following notices to the program. It is safest
-to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
- <one line to give the program's name and a brief idea of what it does.>
- Copyright (C) 19yy <name of author>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
-
-Also add information on how to contact you by electronic and paper mail.
-
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
-
- Gnomovision version 69, Copyright (C) 19yy name of author
- Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
- This is free software, and you are welcome to redistribute it
- under certain conditions; type `show c' for details.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License. Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
-
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary. Here is a sample; alter the names:
-
- Yoyodyne, Inc., hereby disclaims all copyright interest in the program
- `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
- <signature of Ty Coon>, 1 April 1989
- Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs. If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library. If this is what you want to do, use the GNU Library General
-Public License instead of this License.
+++ /dev/null
- GNU GENERAL PUBLIC LICENSE
- Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
- Preamble
-
- The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
- The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works. By contrast,
-the GNU General Public License is intended to guarantee your freedom to
-share and change all versions of a program--to make sure it remains free
-software for all its users. We, the Free Software Foundation, use the
-GNU General Public License for most of our software; it applies also to
-any other work released this way by its authors. You can apply it to
-your programs, too.
-
- When we speak of free software, we are referring to freedom, not
-price. Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
- To protect your rights, we need to prevent others from denying you
-these rights or asking you to surrender the rights. Therefore, you have
-certain responsibilities if you distribute copies of the software, or if
-you modify it: responsibilities to respect the freedom of others.
-
- For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must pass on to the recipients the same
-freedoms that you received. You must make sure that they, too, receive
-or can get the source code. And you must show them these terms so they
-know their rights.
-
- Developers that use the GNU GPL protect your rights with two steps:
-(1) assert copyright on the software, and (2) offer you this License
-giving you legal permission to copy, distribute and/or modify it.
-
- For the developers' and authors' protection, the GPL clearly explains
-that there is no warranty for this free software. For both users' and
-authors' sake, the GPL requires that modified versions be marked as
-changed, so that their problems will not be attributed erroneously to
-authors of previous versions.
-
- Some devices are designed to deny users access to install or run
-modified versions of the software inside them, although the manufacturer
-can do so. This is fundamentally incompatible with the aim of
-protecting users' freedom to change the software. The systematic
-pattern of such abuse occurs in the area of products for individuals to
-use, which is precisely where it is most unacceptable. Therefore, we
-have designed this version of the GPL to prohibit the practice for those
-products. If such problems arise substantially in other domains, we
-stand ready to extend this provision to those domains in future versions
-of the GPL, as needed to protect the freedom of users.
-
- Finally, every program is threatened constantly by software patents.
-States should not allow patents to restrict development and use of
-software on general-purpose computers, but in those that do, we wish to
-avoid the special danger that patents applied to a free program could
-make it effectively proprietary. To prevent this, the GPL assures that
-patents cannot be used to render the program non-free.
-
- The precise terms and conditions for copying, distribution and
-modification follow.
-
- TERMS AND CONDITIONS
-
- 0. Definitions.
-
- "This License" refers to version 3 of the GNU General Public License.
-
- "Copyright" also means copyright-like laws that apply to other kinds of
-works, such as semiconductor masks.
-
- "The Program" refers to any copyrightable work licensed under this
-License. Each licensee is addressed as "you". "Licensees" and
-"recipients" may be individuals or organizations.
-
- To "modify" a work means to copy from or adapt all or part of the work
-in a fashion requiring copyright permission, other than the making of an
-exact copy. The resulting work is called a "modified version" of the
-earlier work or a work "based on" the earlier work.
-
- A "covered work" means either the unmodified Program or a work based
-on the Program.
-
- To "propagate" a work means to do anything with it that, without
-permission, would make you directly or secondarily liable for
-infringement under applicable copyright law, except executing it on a
-computer or modifying a private copy. Propagation includes copying,
-distribution (with or without modification), making available to the
-public, and in some countries other activities as well.
-
- To "convey" a work means any kind of propagation that enables other
-parties to make or receive copies. Mere interaction with a user through
-a computer network, with no transfer of a copy, is not conveying.
-
- An interactive user interface displays "Appropriate Legal Notices"
-to the extent that it includes a convenient and prominently visible
-feature that (1) displays an appropriate copyright notice, and (2)
-tells the user that there is no warranty for the work (except to the
-extent that warranties are provided), that licensees may convey the
-work under this License, and how to view a copy of this License. If
-the interface presents a list of user commands or options, such as a
-menu, a prominent item in the list meets this criterion.
-
- 1. Source Code.
-
- The "source code" for a work means the preferred form of the work
-for making modifications to it. "Object code" means any non-source
-form of a work.
-
- A "Standard Interface" means an interface that either is an official
-standard defined by a recognized standards body, or, in the case of
-interfaces specified for a particular programming language, one that
-is widely used among developers working in that language.
-
- The "System Libraries" of an executable work include anything, other
-than the work as a whole, that (a) is included in the normal form of
-packaging a Major Component, but which is not part of that Major
-Component, and (b) serves only to enable use of the work with that
-Major Component, or to implement a Standard Interface for which an
-implementation is available to the public in source code form. A
-"Major Component", in this context, means a major essential component
-(kernel, window system, and so on) of the specific operating system
-(if any) on which the executable work runs, or a compiler used to
-produce the work, or an object code interpreter used to run it.
-
- The "Corresponding Source" for a work in object code form means all
-the source code needed to generate, install, and (for an executable
-work) run the object code and to modify the work, including scripts to
-control those activities. However, it does not include the work's
-System Libraries, or general-purpose tools or generally available free
-programs which are used unmodified in performing those activities but
-which are not part of the work. For example, Corresponding Source
-includes interface definition files associated with source files for
-the work, and the source code for shared libraries and dynamically
-linked subprograms that the work is specifically designed to require,
-such as by intimate data communication or control flow between those
-subprograms and other parts of the work.
-
- The Corresponding Source need not include anything that users
-can regenerate automatically from other parts of the Corresponding
-Source.
-
- The Corresponding Source for a work in source code form is that
-same work.
-
- 2. Basic Permissions.
-
- All rights granted under this License are granted for the term of
-copyright on the Program, and are irrevocable provided the stated
-conditions are met. This License explicitly affirms your unlimited
-permission to run the unmodified Program. The output from running a
-covered work is covered by this License only if the output, given its
-content, constitutes a covered work. This License acknowledges your
-rights of fair use or other equivalent, as provided by copyright law.
-
- You may make, run and propagate covered works that you do not
-convey, without conditions so long as your license otherwise remains
-in force. You may convey covered works to others for the sole purpose
-of having them make modifications exclusively for you, or provide you
-with facilities for running those works, provided that you comply with
-the terms of this License in conveying all material for which you do
-not control copyright. Those thus making or running the covered works
-for you must do so exclusively on your behalf, under your direction
-and control, on terms that prohibit them from making any copies of
-your copyrighted material outside their relationship with you.
-
- Conveying under any other circumstances is permitted solely under
-the conditions stated below. Sublicensing is not allowed; section 10
-makes it unnecessary.
-
- 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
-
- No covered work shall be deemed part of an effective technological
-measure under any applicable law fulfilling obligations under article
-11 of the WIPO copyright treaty adopted on 20 December 1996, or
-similar laws prohibiting or restricting circumvention of such
-measures.
-
- When you convey a covered work, you waive any legal power to forbid
-circumvention of technological measures to the extent such circumvention
-is effected by exercising rights under this License with respect to
-the covered work, and you disclaim any intention to limit operation or
-modification of the work as a means of enforcing, against the work's
-users, your or third parties' legal rights to forbid circumvention of
-technological measures.
-
- 4. Conveying Verbatim Copies.
-
- You may convey verbatim copies of the Program's source code as you
-receive it, in any medium, provided that you conspicuously and
-appropriately publish on each copy an appropriate copyright notice;
-keep intact all notices stating that this License and any
-non-permissive terms added in accord with section 7 apply to the code;
-keep intact all notices of the absence of any warranty; and give all
-recipients a copy of this License along with the Program.
-
- You may charge any price or no price for each copy that you convey,
-and you may offer support or warranty protection for a fee.
-
- 5. Conveying Modified Source Versions.
-
- You may convey a work based on the Program, or the modifications to
-produce it from the Program, in the form of source code under the
-terms of section 4, provided that you also meet all of these conditions:
-
- a) The work must carry prominent notices stating that you modified
- it, and giving a relevant date.
-
- b) The work must carry prominent notices stating that it is
- released under this License and any conditions added under section
- 7. This requirement modifies the requirement in section 4 to
- "keep intact all notices".
-
- c) You must license the entire work, as a whole, under this
- License to anyone who comes into possession of a copy. This
- License will therefore apply, along with any applicable section 7
- additional terms, to the whole of the work, and all its parts,
- regardless of how they are packaged. This License gives no
- permission to license the work in any other way, but it does not
- invalidate such permission if you have separately received it.
-
- d) If the work has interactive user interfaces, each must display
- Appropriate Legal Notices; however, if the Program has interactive
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- work need not make them do so.
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- A compilation of a covered work with other separate and independent
-works, which are not by their nature extensions of the covered work,
-and which are not combined with it such as to form a larger program,
-in or on a volume of a storage or distribution medium, is called an
-"aggregate" if the compilation and its resulting copyright are not
-used to limit the access or legal rights of the compilation's users
-beyond what the individual works permit. Inclusion of a covered work
-in an aggregate does not cause this License to apply to the other
-parts of the aggregate.
-
- 6. Conveying Non-Source Forms.
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- You may convey a covered work in object code form under the terms
-of sections 4 and 5, provided that you also convey the
-machine-readable Corresponding Source under the terms of this License,
-in one of these ways:
-
- a) Convey the object code in, or embodied in, a physical product
- (including a physical distribution medium), accompanied by the
- Corresponding Source fixed on a durable physical medium
- customarily used for software interchange.
-
- b) Convey the object code in, or embodied in, a physical product
- (including a physical distribution medium), accompanied by a
- written offer, valid for at least three years and valid for as
- long as you offer spare parts or customer support for that product
- model, to give anyone who possesses the object code either (1) a
- copy of the Corresponding Source for all the software in the
- product that is covered by this License, on a durable physical
- medium customarily used for software interchange, for a price no
- more than your reasonable cost of physically performing this
- conveying of source, or (2) access to copy the
- Corresponding Source from a network server at no charge.
-
- c) Convey individual copies of the object code with a copy of the
- written offer to provide the Corresponding Source. This
- alternative is allowed only occasionally and noncommercially, and
- only if you received the object code with such an offer, in accord
- with subsection 6b.
-
- d) Convey the object code by offering access from a designated
- place (gratis or for a charge), and offer equivalent access to the
- Corresponding Source in the same way through the same place at no
- further charge. You need not require recipients to copy the
- Corresponding Source along with the object code. If the place to
- copy the object code is a network server, the Corresponding Source
- may be on a different server (operated by you or a third party)
- that supports equivalent copying facilities, provided you maintain
- clear directions next to the object code saying where to find the
- Corresponding Source. Regardless of what server hosts the
- Corresponding Source, you remain obligated to ensure that it is
- available for as long as needed to satisfy these requirements.
-
- e) Convey the object code using peer-to-peer transmission, provided
- you inform other peers where the object code and Corresponding
- Source of the work are being offered to the general public at no
- charge under subsection 6d.
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- A separable portion of the object code, whose source code is excluded
-from the Corresponding Source as a System Library, need not be
-included in conveying the object code work.
-
- A "User Product" is either (1) a "consumer product", which means any
-tangible personal property which is normally used for personal, family,
-or household purposes, or (2) anything designed or sold for incorporation
-into a dwelling. In determining whether a product is a consumer product,
-doubtful cases shall be resolved in favor of coverage. For a particular
-product received by a particular user, "normally used" refers to a
-typical or common use of that class of product, regardless of the status
-of the particular user or of the way in which the particular user
-actually uses, or expects or is expected to use, the product. A product
-is a consumer product regardless of whether the product has substantial
-commercial, industrial or non-consumer uses, unless such uses represent
-the only significant mode of use of the product.
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- "Installation Information" for a User Product means any methods,
-procedures, authorization keys, or other information required to install
-and execute modified versions of a covered work in that User Product from
-a modified version of its Corresponding Source. The information must
-suffice to ensure that the continued functioning of the modified object
-code is in no case prevented or interfered with solely because
-modification has been made.
-
- If you convey an object code work under this section in, or with, or
-specifically for use in, a User Product, and the conveying occurs as
-part of a transaction in which the right of possession and use of the
-User Product is transferred to the recipient in perpetuity or for a
-fixed term (regardless of how the transaction is characterized), the
-Corresponding Source conveyed under this section must be accompanied
-by the Installation Information. But this requirement does not apply
-if neither you nor any third party retains the ability to install
-modified object code on the User Product (for example, the work has
-been installed in ROM).
-
- The requirement to provide Installation Information does not include a
-requirement to continue to provide support service, warranty, or updates
-for a work that has been modified or installed by the recipient, or for
-the User Product in which it has been modified or installed. Access to a
-network may be denied when the modification itself materially and
-adversely affects the operation of the network or violates the rules and
-protocols for communication across the network.
-
- Corresponding Source conveyed, and Installation Information provided,
-in accord with this section must be in a format that is publicly
-documented (and with an implementation available to the public in
-source code form), and must require no special password or key for
-unpacking, reading or copying.
-
- 7. Additional Terms.
-
- "Additional permissions" are terms that supplement the terms of this
-License by making exceptions from one or more of its conditions.
-Additional permissions that are applicable to the entire Program shall
-be treated as though they were included in this License, to the extent
-that they are valid under applicable law. If additional permissions
-apply only to part of the Program, that part may be used separately
-under those permissions, but the entire Program remains governed by
-this License without regard to the additional permissions.
-
- When you convey a copy of a covered work, you may at your option
-remove any additional permissions from that copy, or from any part of
-it. (Additional permissions may be written to require their own
-removal in certain cases when you modify the work.) You may place
-additional permissions on material, added by you to a covered work,
-for which you have or can give appropriate copyright permission.
-
- Notwithstanding any other provision of this License, for material you
-add to a covered work, you may (if authorized by the copyright holders of
-that material) supplement the terms of this License with terms:
-
- a) Disclaiming warranty or limiting liability differently from the
- terms of sections 15 and 16 of this License; or
-
- b) Requiring preservation of specified reasonable legal notices or
- author attributions in that material or in the Appropriate Legal
- Notices displayed by works containing it; or
-
- c) Prohibiting misrepresentation of the origin of that material, or
- requiring that modified versions of such material be marked in
- reasonable ways as different from the original version; or
-
- d) Limiting the use for publicity purposes of names of licensors or
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-
- e) Declining to grant rights under trademark law for use of some
- trade names, trademarks, or service marks; or
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+++ /dev/null
-This is a terse description of the new features added to bash-4.3 since
-the release of bash-4.2. As always, the manual page (doc/bash.1) is
-the place to look for complete descriptions.
-
-1. New Features in Bash
-
-a. The `helptopic' completion action now maps to all the help topics, not just
- the shell builtins.
-
-b. The `help' builtin no longer does prefix substring matching, so `help read'
- does not match `readonly'.
-
-c. The shell can be compiled to not display a message about processes that
- terminate due to SIGTERM.
-
-d. Non-interactive shells now react to the setting of checkwinsize and set
- LINES and COLUMNS after a foreground job exits.
-
-e. There is a new shell option, `globasciiranges', which, when set to on,
- forces globbing range comparisons to use character ordering as if they
- were run in the C locale.
-
-f. There is a new shell option, `direxpand', which makes filename completion
- expand variables in directory names in the way bash-4.1 did.
-
-g. In Posix mode, the `command' builtin does not change whether or not a
- builtin it shadows is treated as an assignment builtin.
-
-h. The `return' and `exit' builtins accept negative exit status arguments.
-
-i. The word completion code checks whether or not a filename containing a
- shell variable expands to a directory name and appends `/' to the word
- as appropriate. The same code expands shell variables in command names
- when performing command completion.
-
-j. In Posix mode, it is now an error to attempt to define a shell function
- with the same name as a Posix special builtin.
-
-k. When compiled for strict Posix conformance, history expansion is disabled
- by default.
-
-l. The history expansion character (!) does not cause history expansion when
- followed by the closing quote in a double-quoted string.
-
-m. `complete' and its siblings compgen/compopt now takes a new `-o noquote'
- option to inhibit quoting of the completions.
-
-n. Setting HISTSIZE to a value less than zero causes the history list to be
- unlimited (setting it 0 zero disables the history list).
-
-o. Setting HISTFILESIZE to a value less than zero causes the history file size
- to be unlimited (setting it to 0 causes the history file to be truncated
- to zero size).
-
-p. The `read' builtin now skips NUL bytes in the input.
-
-q. There is a new `bind -X' option to print all key sequences bound to Unix
- commands.
-
-r. When in Posix mode, `read' is interruptible by a trapped signal. After
- running the trap handler, read returns 128+signal and throws away any
- partially-read input.
-
-s. The command completion code skips whitespace and assignment statements
- before looking for the command name word to be completed.
-
-t. The build process has a new mechanism for constructing separate help files
- that better reflects the current set of compilation options.
-
-u. The -nt and -ot options to test now work with files with nanosecond
- timestamp resolution.
-
-v. The shell saves the command history in any shell for which history is
- enabled and HISTFILE is set, not just interactive shells.
-
-w. The shell has `nameref' variables and new -n(/+n) options to declare and
- unset to use them, and a `test -R' option to test for them.
-
-x. The shell now allows assigning, referencing, and unsetting elements of
- indexed arrays using negative subscripts (a[-1]=2, echo ${a[-1]}) which
- count back from the last element of the array.
-
-y. The {x}<word redirection feature now allows words like {array[ind]} and
- can use variables with special meanings to the shell (e.g., BASH_XTRACEFD).
-
-z. There is a new CHILD_MAX special shell variable; its value controls the
- number of exited child statues the shell remembers.
-
-aa. There is a new configuration option (--enable-direxpand-default) that
- causes the `direxpand' shell option to be enabled by default.
-
-bb. Bash does not do anything special to ensure that the file descriptor
- assigned to X in {x}<foo remains open after the block containing it
- completes.
-
-cc. The `wait' builtin has a new `-n' option to wait for the next child to
- change status.
-
-dd. The `printf' %(...)T format specifier now uses the current time if no
- argument is supplied.
-
-ee. There is a new variable, BASH_COMPAT, that controls the current shell
- compatibility level.
-
-ff. The `popd' builtin now treats additional arguments as errors.
-
-gg. The brace expansion code now treats a failed sequence expansion as a
- simple string and will continue to expand brace terms in the remainder
- of the word.
-
-2. New Features in Readline
-
-a. Readline is now more responsive to SIGHUP and other fatal signals when
- reading input from the terminal or performing word completion but no
- longer attempts to run any not-allowable functions from a signal handler
- context.
-
-b. There are new bindable commands to search the history for the string of
- characters between the beginning of the line and the point
- (history-substring-search-forward, history-substring-search-backward)
-
-c. Readline allows quoted strings as the values of variables when setting
- them with `set'. As a side effect, trailing spaces and tabs are ignored
- when setting a string variable's value.
-
-d. The history library creates a backup of the history file when writing it
- and restores the backup on a write error.
-
-e. New application-settable variable: rl_filename_stat_hook: a function called
- with a filename before using it in a call to stat(2). Bash uses it to
- expand shell variables so things like $HOME/Downloads have a slash
- appended.
-
-f. New bindable function `print-last-kbd-macro', prints the most-recently-
- defined keyboard macro in a reusable format.
-
-g. New user-settable variable `colored-stats', enables use of colored text
- to denote file types when displaying possible completions (colored analog
- of visible-stats).
-
-h. New user-settable variable `keyseq-timout', acts as an inter-character
- timeout when reading input or incremental search strings.
-
-i. New application-callable function: rl_clear_history. Clears the history list
- and frees all readline-associated private data.
-
-j. New user-settable variable, show-mode-in-prompt, adds a characters to the
- beginning of the prompt indicating the current editing mode.
-
-k. New application-settable variable: rl_input_available_hook; function to be
- called when readline detects there is data available on its input file
- descriptor.
-
-l. Readline calls an application-set event hook (rl_event_hook) after it gets
- a signal while reading input (read returns -1/EINTR but readline does not
- handle the signal immediately) to allow the application to handle or
- otherwise note it.
-
-m. If the user-settable variable `history-size' is set to a value less than
- 0, the history list size is unlimited.
-
-n. New application-settable variable: rl_signal_event_hook; function that is
- called when readline is reading terminal input and read(2) is interrupted
- by a signal. Currently not called for SIGHUP or SIGTERM.
projects / thirdparty / bash.git / commitdiff
