[SCM] GNU Autoconf source repository branch, master, updated. v2.69-77-g845e703

[Paul Eggert]

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- Log -----------------------------------------------------------------
commit 845e703afd505f1f5ca7649fc1730258573e0f3a
Author: Paul Eggert <address@hidden>
Date:   Fri Mar 8 09:22:48 2013 -0800

    doc: explain why single-quoting is better
    
    * doc/autoconf.texi (Build Directories): Explain single-quoting.
    Reported by Markus Elfring in
    <http://savannah.gnu.org/support/?108262>.

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

Summary of changes:
 doc/autoconf.texi |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index bf4823d..c54c5b3 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -3148,7 +3148,10 @@ versions of @command{make} do not set @code{$<} in 
explicit rules; they
 expand it to an empty value.
 
 Instead, Make command lines should always refer to source
-files by prefixing them with @samp{$(srcdir)/}.  For example:
+files by prefixing them with @samp{$(srcdir)/}.  It's safer
+to quote the source directory name, in case it contains characters that
+are special to the shell.  Because @samp{$(srcdir)} is expanded by Make,
+single-quoting works and is safer than double-quoting.  For example:
 
 @example
 time.info: time.texinfo


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