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authorMatthew Jordan <mjordan@digium.com>2013-07-14 02:00:02 +0000
committerMatthew Jordan <mjordan@digium.com>2013-07-14 02:00:02 +0000
commita3592db1fb558763d28878c707a9cbc16b890e21 (patch)
tree04a4b4c2792d6a4f5c6bcc64b0989f887b484b89 /funcs
parent70decd0abe9da563bbbfac94a0d488d9e25010ac (diff)
Clarify documentation for function PASSTHRU
It is not apparent to the average user that the PASSTHRU function should not be passed as ${PASSTHRU(string)} but just as PASSTHRU(string) to functions which take a variable name and not its contents. This patch clarifies the behavior in the documentation and provides an example. (closes issue ASTERISK-21717) Reported by: Richard Miller patches: func_strings.diff uploaded by Richard Miller (license 5685) ........ Merged revisions 394302 from http://svn.asterisk.org/svn/asterisk/branches/1.8 ........ Merged revisions 394303 from http://svn.asterisk.org/svn/asterisk/branches/11 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@394304 65c4cc65-6c06-0410-ace0-fbb531ad65f3
Diffstat (limited to 'funcs')
-rw-r--r--funcs/func_strings.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/funcs/func_strings.c b/funcs/func_strings.c
index 9e486d6be..937fe2b9c 100644
--- a/funcs/func_strings.c
+++ b/funcs/func_strings.c
@@ -165,6 +165,10 @@ AST_THREADSTORAGE(tmp_buf);
<para>Literally returns the given <replaceable>string</replaceable>. The intent is to permit
other dialplan functions which take a variable name as an argument to be able to take a literal
string, instead.</para>
+ <note><para>The functions which take a variable name need to be passed var and not
+ ${var}. Similarly, use PASSTHRU() and not ${PASSTHRU()}.</para></note>
+ <para>Example: ${CHANNEL} contains SIP/321-1</para>
+ <para> ${CUT(PASSTHRU(${CUT(CHANNEL,-,1)}),/,2)}) will return 321</para>
</description>
</function>
<function name="REGEX" language="en_US">