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Import from Autoconf sources:

	2005-09-06  Paul Eggert  <eggert@cs.ucla.edu>
	* config/move-if-change: Don't output "$2 is unchanged";
	suggested by Ben Elliston.  Handle weird characters correctly.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@107275 138bc75d-0d04-0410-961f-82ee72b054a4
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bje
bje committed Nov 21, 2005
1 parent 5447c6e commit fefdfa6eba783a005677edb3fc8459fd7bb16adb
Showing with 25 additions and 27 deletions.
  1. +8 −0 ChangeLog
  2. +17 −27 move-if-change
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@@ -1,3 +1,11 @@
+2005-11-21 Ben Elliston <bje@au.ibm.com>
+
+ Import from Autoconf sources:
+
+ 2005-09-06 Paul Eggert <eggert@cs.ucla.edu>
+ * config/move-if-change: Don't output "$2 is unchanged";
+ suggested by Ben Elliston. Handle weird characters correctly.
+
2005-11-18 Andreas Tobler <a.tobler@schweiz.ch>
* ltcf-c.sh (whole_archive_flag_spec): Remove '-all_load $convenience'
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@@ -1,32 +1,22 @@
#!/bin/sh
+# Like mv $1 $2, but if the files are the same, just delete $1.
+# Status is zero if successful, nonzero otherwise.
-# Copyright (C) 1996 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 2 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, write to the Free Software
-# Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+usage="$0: usage: $0 SOURCE DEST"
-if
-test -r $2
-then
-if
-cmp $1 $2 > /dev/null
-then
-echo $2 is unchanged
-rm -f $1
-else
-mv -f $1 $2
-fi
+case $# in
+2) ;;
+*) echo "$usage" >&2; exit 1;;
+esac
+
+for arg in "$1" "$2"; do
+ case $arg in
+ -*) echo "$usage" >&2; exit 1;;
+ esac
+done
+
+if test -r "$2" && cmp -s "$1" "$2"; then
+ rm -f "$1"
else
-mv -f $1 $2
+ mv -f "$1" "$2"
fi

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