@ignore
This file documents the user interface to the GNU History library.
-Copyright (C) 1988--2016 Free Software Foundation, Inc.
+Copyright (C) 1988--2018 Free Software Foundation, Inc.
Authored by Brian Fox and Chet Ramey.
Permission is granted to make and distribute verbatim copies of this manual
shell option causes the shell to save the command with embedded newlines
instead of semicolons.
The @code{shopt} builtin is used to set these options.
-@xref{Bash Builtins}, for a description of @code{shopt}.
+@xref{The Shopt Builtin}, for a description of @code{shopt}.
@node Bash History Builtins
@section Bash History Builtins
@var{last} may be specified as a string (to locate the most recent
command beginning with that string) or as a number (an index into the
history list, where a negative number is used as an offset from the
-current command number). If @var{last} is not specified it is set to
-@var{first}. If @var{first} is not specified it is set to the previous
+current command number). If @var{last} is not specified, it is set to
+@var{first}. If @var{first} is not specified, it is set to the previous
command for editing and @minus{}16 for listing. If the @option{-l} flag is
given, the commands are listed on standard output. The @option{-n} flag
suppresses the command numbers when listing. The @option{-r} flag
history [@var{n}]
history -c
history -d @var{offset}
+history -d @var{start}-@var{end}
history [-anrw] [@var{filename}]
history -ps @var{arg}
@end example
@item -d @var{offset}
Delete the history entry at position @var{offset}.
-@var{offset} should be specified as it appears when the history is
-displayed.
+If @var{offset} is positive, it should be specified as it appears when
+the history is displayed.
+If @var{offset} is negative, it is interpreted as relative to one greater
+than the last history position, so negative indices count back from the
+end of the history, and an index of @samp{-1} refers to the current
+@code{history -d} command.
+
+@item -d @var{start}-@var{end}
+Delete the history entries between positions @var{start} and @var{end},
+inclusive. Positive and negative values for @var{start} and @var{end}
+are interpreted as described above.
@item -a
Append the new history lines to the history file.
@ifset BashFeatures
History expansion is performed immediately after a complete line
-is read, before the shell breaks it into words.
+is read, before the shell breaks it into words, and is performed
+on each line individually. Bash attempts to inform the history
+expansion functions about quoting still in effect from previous lines.
@end ifset
History expansion takes place in two parts. The first is to determine
surrounded by quotes are considered one word.
History expansions are introduced by the appearance of the
history expansion character, which is @samp{!} by default.
+
+History expansion implements shell-like quoting conventions:
+a backslash can be used to remove the special handling for the next character;
+single quotes enclose verbatim sequences of characters, and can be used to
+inhibit history expansion;
+and characters enclosed within double quotes may be subject to history
+expansion, since backslash can escape the history expansion character,
+but single quotes may not, since they are not treated specially within
+double quotes.
+
@ifset BashFeatures
-Only @samp{\} and @samp{'} may be used to escape the history expansion
-character, but the history expansion character is
+When using the shell, only @samp{\} and @samp{'} may be used to escape the
+history expansion character, but the history expansion character is
also treated as quoted if it immediately precedes the closing double quote
in a double-quoted string.
@end ifset
@ifset BashFeatures
Several shell options settable with the @code{shopt}
-builtin (@pxref{Bash Builtins}) may be used to tailor
+builtin (@pxref{The Shopt Builtin}) may be used to tailor
the behavior of history expansion. If the
@code{histverify} shell option is enabled, and Readline
is being used, history substitutions are not immediately passed to