From: Kevin P. Fleming Date: Tue, 13 Dec 2005 18:54:41 +0000 (+0000) Subject: Merged revisions 7470 via svnmerge from X-Git-Tag: 1.4.0-beta1~3194 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=baecca23205444df5ddaf2f06a6d15f304edbeba;p=thirdparty%2Fasterisk.git Merged revisions 7470 via svnmerge from https://origsvn.digium.com/svn/asterisk/branches/1.2 ........ r7470 | kpfleming | 2005-12-13 12:54:22 -0600 (Tue, 13 Dec 2005) | 2 lines clarify substring documentation ........ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@7471 65c4cc65-6c06-0410-ace0-fbb531ad65f3 --- diff --git a/doc/README.variables b/doc/README.variables index d95c29ed72..d3f5c61cbe 100644 --- a/doc/README.variables +++ b/doc/README.variables @@ -94,17 +94,17 @@ NoOp(${__FOO}) is identical to NoOp(${FOO}) -_______________________________ -REMOVING CHARACTERS FROM STRING -------------------------------- +___________________________________ +SELECTING CHARACTERS FROM VARIABLES +----------------------------------- -The format for removing characters from a variable can be expressed as: +The format for selecting characters from a variable can be expressed as: ${variable_name[:offset[:length]]} -If you want to remove the first N characters from the string assigned +If you want to select the first N characters from the string assigned to a variable, simply append a colon and the number of characters to -remove from the beginning of the string to the variable name. +skip from the beginning of the string to the variable name. ;Remove the first character of extension, save in "number" variable exten => _9X.,1,Set(number=${EXTEN:1}) @@ -115,7 +115,7 @@ dial a number to access an outside line, but do not wish to pass the first digit. If you use a negative offset number, Asterisk starts counting from the end -of the string and then removes everything before the new position. The following +of the string and then selects everything after the new position. The following example will save the numbers 1234 to the 'number' variable, still assuming we've dialed 918005551234.