git-version-gen: use (...) rather than sh -c '...'

* build-aux/git-version-gen: Rather than hard-coding a shell's name
with "sh -c '...'", just use "(...)".  Less syntax is better, too.

diff --git a/ChangeLog b/ChangeLog
index 97e911b..bb3d9cf 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2011-01-03  Ben Pfaff  <blp@cs.stanford.edu>
+
+       git-version-gen: use (...) rather than sh -c '...'
+       * build-aux/git-version-gen: Rather than hard-coding a shell's name
+       with "sh -c '...'", just use "(...)".  Less syntax is better, too.
+
 2011-01-03  Jim Meyering  <meyering@redhat.com>
 
        git-version-gen: convert leading TABs to spaces

diff --git a/build-aux/git-version-gen b/build-aux/git-version-gen
index f116ba1..694ba46 100755 (executable)
--- a/build-aux/git-version-gen
+++ b/build-aux/git-version-gen
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Print a version string.
-scriptversion=2011-01-03.19; # UTC
+scriptversion=2011-01-03.20; # UTC
 
 # Copyright (C) 2007-2011 Free Software Foundation, Inc.
 #
@@ -143,7 +143,7 @@ v=`echo "$v" |sed 's/^v//'`
 # Don't declare a version "dirty" merely because a time stamp has changed.
 git update-index --refresh > /dev/null 2>&1
 
-dirty=`sh -c 'git diff-index --name-only HEAD' 2>/dev/null` || dirty=
+dirty=`(git diff-index --name-only HEAD) 2>/dev/null` || dirty=
 case "$dirty" in
     '') ;;
     *) # Append the suffix only if there isn't one already.