[SCM] GNU Autoconf source repository branch, master, updated. v2.61a-272-g6d8cbe2

[Benoit Sigoure]

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- Log -----------------------------------------------------------------
commit 6d8cbe20d4ddfa4a1f631fc2615625d5b60294bc
Author: Benoit Sigoure <address@hidden>
Date:   Sun Nov 11 18:41:58 2007 +0100

    Document that $((expression)) is not portable.
    
        * doc/autoconf.texi (Shell Substitutions): Here.
    
    Signed-off-by: Benoit Sigoure <address@hidden>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog         |    5 +++++
 doc/autoconf.texi |    8 ++++++++
 2 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 69e6990..d8c5b94 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2007-11-11  Benoit Sigoure  <address@hidden>
+
+       Document that $((expression)) is not portable.
+       * doc/autoconf.texi (Shell Substitutions): Here.
+
 2007-11-10  Ralf Wildenhues  <address@hidden>
 
        Ignore configure --help* errors due to LINENO-impaired shells.
diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 421056e..acc80cf 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -13061,6 +13061,14 @@ mishandle them.  For example, Bash 3.1, @samp{ksh88}, 
@command{pdksh}
 echo $(case x in x) echo hello;; esac)
 @end example
 
+
address@hidden $((@var{expression}))
address@hidden $((@var{expression}))
+Arithmetic expansion is not portable as some shells (most
+notably Solaris 10 @command{/bin/sh}) don't support it.
+
+
+
 @item ^
 @cindex ^ quoting
 Always quote @samp{^}, otherwise traditional shells such as


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