[PATCH 3/4] {minor} install-sh: assume that "set -f" and "set +f" work...

[Stefano Lattarini]

... and disable/enable shell globbing, respectively.  This is
mandated by POSIX, and supported even by Solaris 9 /bin/sh (one
of the most braindead shells we still support).

* lib/install.sh: Adjust.
* NEWS: Update.

Signed-off-by: Stefano Lattarini <address@hidden>
---
 NEWS           |  4 +++-
 lib/install-sh | 24 ++++--------------------
 2 files changed, 7 insertions(+), 21 deletions(-)

diff --git a/NEWS b/NEWS
index 37f513b..da41307 100644
--- a/NEWS
+++ b/NEWS
@@ -109,9 +109,11 @@ New in 1.15:
 * Cleanups and modernizations:
 
   - The install-sh script has been modernized, and now makes the following
-    assumptions unconditionally:
+    assumptions *unconditionally*:
     (1) a working 'dirname' program is available;
     (2) the ${var:-value} shell parameters substitution works;
+    (3) the "set -f" and "set +f" shell commands work, and, respectively,
+        disable and enable shell globbing.
 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
diff --git a/lib/install-sh b/lib/install-sh
index 9a7bad8..be3c5d9 100755
--- a/lib/install-sh
+++ b/lib/install-sh
@@ -63,17 +63,6 @@ mvprog=${MVPROG-mv}
 rmprog=${RMPROG-rm}
 stripprog=${STRIPPROG-strip}
 
-posix_glob='?'
-initialize_posix_glob='
-  test "$posix_glob" != "?" || {
-    if (set -f) 2>/dev/null; then
-      posix_glob=
-    else
-      posix_glob=:
-    fi
-  }
-'
-
 posix_mkdir=
 
 # Desired mode of installed file.
@@ -365,14 +354,12 @@ do
        *)  prefix='';;
       esac
 
-      eval "$initialize_posix_glob"
-
       oIFS=$IFS
       IFS=/
-      $posix_glob set -f
+      set -f
       set fnord $dstdir
       shift
-      $posix_glob set +f
+      set +f
       IFS=$oIFS
 
       prefixes=
@@ -443,13 +430,10 @@ do
     if $copy_on_change &&
        old=`LC_ALL=C ls -dlL "$dst"    2>/dev/null` &&
        new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` &&
-
-       eval "$initialize_posix_glob" &&
-       $posix_glob set -f &&
+       set -f &&
        set X $old && old=:$2:$4:$5:$6 &&
        set X $new && new=:$2:$4:$5:$6 &&
-       $posix_glob set +f &&
-
+       set +f &&
        test "$old" = "$new" &&
        $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
     then
-- 
1.8.3.1.605.g85318f5