PATCH: installing executable functions

[Peter Stephenson <p.w.stephenson@ntlworld.com>]

On the subject of "#!" lines, and given the general flakiness of using
the executable bit on files from CVS, wouldn't it be better and
generally more consistent to make installed functions executable if and
only if they have a #! line?  If this is doing the wrong thing with a
function, then presumably the #! line is misplaced anyway.

("sed -ne '1p'" is in case there's some ghastliness where "head -1" is
broken as has occasionally been observed with "tail -1".)

The biggest disadvantage here is this could make function installation
on some systems, notably Cygwin, even more interminable.  Unfortunately
we're relying on sh at this point.

Index: Config/installfns.sh
===================================================================
RCS file: /cvsroot/zsh/zsh/Config/installfns.sh,v
retrieving revision 1.14
diff -u -r1.14 installfns.sh
--- Config/installfns.sh	26 Jul 2007 08:58:08 -0000	1.14
+++ Config/installfns.sh	29 Jan 2010 21:49:56 -0000
@@ -46,7 +46,7 @@
     fi
     test -d $instdir || /bin/sh $sdir_top/mkinstalldirs $instdir || exit 1
     $INSTALL_DATA $sdir_top/$file $instdir || exit 1
-    if test -x $sdir_top/$file; then
+    if sed -ne '1p' $sdir_top/$file | grep '^#!' >/dev/null; then
 	chmod +x $instdir/`echo $file | sed -e 's%^.*/%%'`
     fi
   fi

-- 
Peter Stephenson <p.w.stephenson@ntlworld.com>
Web page now at http://homepage.ntlworld.com/p.w.stephenson/