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authorPaul Eggert <eggert@cs.ucla.edu>2011-01-07 12:42:11 -0800
committerPaul Eggert <eggert@cs.ucla.edu>2011-01-07 12:42:11 -0800
commit2b3f5bc80a2b8a7496a5d87cc98ffcce44e7b32e (patch)
tree0f8e136e47266b4bc4fa38ce543686edf4440f8e /move-if-change
parentf56e0e7a85978026b611bc8f28bdb91d7f8130d4 (diff)
downloademacs-2b3f5bc80a2b8a7496a5d87cc98ffcce44e7b32e.tar.gz
* install-sh, mkinstalldirs, move-if-change: Update from master
Diffstat (limited to 'move-if-change')
-rwxr-xr-xmove-if-change86
1 files changed, 74 insertions, 12 deletions
diff --git a/move-if-change b/move-if-change
index ee9e355e3e6..a891ca51f0c 100755
--- a/move-if-change
+++ b/move-if-change
@@ -1,15 +1,77 @@
#!/bin/sh
-if
-test -r $2
-then
-if
-cmp $1 $2 > /dev/null
-then
-echo $2 is unchanged
-rm -f $1
+# Like mv $1 $2, but if the files are the same, just delete $1.
+# Status is zero if successful, nonzero otherwise.
+
+VERSION='2007-09-28 23:10'; # UTC
+# The definition above must lie within the first 8 lines in order
+# for the Emacs time-stamp write hook (at end) to update it.
+# If you change this file with Emacs, please let the write hook
+# do its job. Otherwise, update this string manually.
+
+# Copyright (C) 2002-2007, 2009-2011 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+usage="usage: $0 SOURCE DEST"
+
+help="$usage
+ or: $0 OPTION
+If SOURCE is different than DEST, then move it to DEST; else remove SOURCE.
+
+ --help display this help and exit
+ --version output version information and exit
+
+Report bugs to <bug-gnulib@gnu.org>."
+
+version=`expr "$VERSION" : '\([^ ]*\)'`
+version="move-if-change (gnulib) $version
+Copyright (C) 2007 Free Software Foundation, Inc.
+License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
+This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law."
+
+
+for arg
+do
+ case $arg in
+ --help | --hel | --he | --h)
+ exec echo "$help" ;;
+ --version | --versio | --versi | --vers | --ver | --ve | --v)
+ exec echo "$version" ;;
+ --)
+ shift
+ break ;;
+ -*)
+ echo "$0: invalid option: $arg" >&2
+ exit 1 ;;
+ *)
+ break ;;
+ esac
+done
+
+test $# = 2 || { echo "$0: $usage" >&2; exit 1; }
+
+if test -r "$2" && cmp -s -- "$1" "$2"; then
+ rm -f -- "$1"
else
-mv -f $1 $2
-fi
-else
-mv -f $1 $2
+ mv -f -- "$1" "$2"
fi
+
+## Local Variables:
+## eval: (add-hook 'write-file-hooks 'time-stamp)
+## time-stamp-start: "VERSION='"
+## time-stamp-format: "%:y-%02m-%02d %02H:%02M"
+## time-stamp-time-zone: "UTC"
+## time-stamp-end: "'; # UTC"
+## End: