asterisk users - Jun 2005 - CVS Head, Flex 2.5.31 or higher? READ THIS!

Everyone using CVS head, and owning flex-2.5.31 (or higher)--

Please note that a new version of the expression ( $[  ]  constructs used in
extensions.conf ) parser
is automatically built by the makefile if your flex is at 2.5.31 or higher. You
can see what your
flex version is by saying flex -V...

Now, the new scanner has some nice things about it, but it does behave a little
differently
in some (hopefully rare) situations. To help find one of these situations
quickly, I submitted
a program for consideration to be included somewhere in the asterisk CVS, which
checks for the
one problem I've seen reported so far. I advise everyone using cvs head and
having flex-2.5.31, to
run this program the first time you build asterisk. You won't need it
afterwards. Look at the
expressions it flags, and if you don't understand the issue, read the
README.variables file.

First, you can obtain the check_expr.c file by browsing to:
http://bugs.digium.com/view.php?id=4491
and clicking on the attached file link.

Compile it with gcc -o check_expr -g check_expr.c

run it with ./check_expr /etc/asterisk/extensions.conf      (or whatever the
path is on your machine).

an expr2_log file will be created, and every $[ ] expression it finds will be
listed with its status.

If you get any warnings, look over the situation, and see if you have to do
anything. The most likely
thing you might want to do is wrap some things in double quotes to keep the
indicated operator from
being evaluated, such as regex expressions for the ":" operator.

Any questions, just write me. I'll do the best I can.

murf