|
| From: | Eric Blake |
| Subject: | Re: Why if test "xSTRING1= "xSTRING2" (the 'x') ? |
| Date: | Mon, 26 Mar 2007 07:18:48 -0600 |
| User-agent: | Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.10) Gecko/20070221 Thunderbird/1.5.0.10 Mnenhy/0.7.4.666 |
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According to Jules Colding on 3/26/2007 7:10 AM:
> if test "xSTRING1" = "xSTRING2"; then
> else
> fi
>
> Probably something entirely fundamental that I just forgot...
Portability. Suppose STRING1 is '(' and STRING2 is ')'. Then 'test "x("
= "x)"' is false, while 'test ( = )' is true. See also the manual:
http://www.gnu.org/software/autoconf/manual/html_node/Limitations-of-Builtins.html#Limitations-of-Builtins
- --
Don't work too hard, make some time for fun as well!
Eric Blake address@hidden
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