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authorKarl Berry <karl@freefriends.org>2020-11-15 00:53:54 +0000
committerKarl Berry <karl@freefriends.org>2020-11-15 00:53:54 +0000
commit4e1dd3b1c59e94e9e09358f4edf1d35ebdbfd194 (patch)
tree65978fdb4ba16a275bd4539b0b931baf26d7a804 /Build/source/build-aux
parented41ec13796e005c1f3923e34bfbc5e0185df3ab (diff)
tl-update-auto
git-svn-id: svn://tug.org/texlive/trunk@56936 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/build-aux')
-rwxr-xr-xBuild/source/build-aux/install-sh16
1 files changed, 15 insertions, 1 deletions
diff --git a/Build/source/build-aux/install-sh b/Build/source/build-aux/install-sh
index b6d2a909d1b..8cd4f5ca5ea 100755
--- a/Build/source/build-aux/install-sh
+++ b/Build/source/build-aux/install-sh
@@ -1,7 +1,7 @@
#!/bin/sh
# install - install a program, script, or datafile
-scriptversion=2020-11-11.03; # UTC
+scriptversion=2020-11-13.01; # UTC
# This originates from X11R5 (mit/util/scripts/install.sh), which was
# later released in X11R6 (xc/config/util/install.sh) with the
@@ -73,6 +73,7 @@ mode=0755
# This is like GNU 'install' as of coreutils 8.32 (2020).
mkdir_umask=22
+backupsuffix=
chgrpcmd=
chmodcmd=$chmodprog
chowncmd=
@@ -110,6 +111,7 @@ Options:
-o USER $chownprog installed files to USER.
-p pass -p to $cpprog.
-s $stripprog installed files.
+ -S SUFFIX attempt to back up existing files, with suffix SUFFIX.
-t DIRECTORY install into DIRECTORY.
-T report an error if DSTFILE is a directory.
@@ -120,6 +122,8 @@ Environment variables override the default commands:
By default, rm is invoked with -f; when overridden with RMPROG,
it's up to you to specify -f if you want it.
+If -S is not specified, no backups are attempted.
+
Email bug reports to bug-automake@gnu.org.
Automake home page: https://www.gnu.org/software/automake/
"
@@ -152,6 +156,9 @@ while test $# -ne 0; do
-s) stripcmd=$stripprog;;
+ -S) backupsuffix="$2"
+ shift;;
+
-t)
is_target_a_directory=always
dst_arg=$2
@@ -486,6 +493,13 @@ do
then
rm -f "$dsttmp"
else
+ # If $backupsuffix is set, and the file being installed
+ # already exists, attempt a backup. Don't worry if it fails,
+ # e.g., if mv doesn't support -f.
+ if test -n "$backupsuffix" && test -f "$dst"; then
+ $doit $mvcmd -f "$dst" "$dst$backupsuffix" 2>/dev/null
+ fi
+
# Rename the file to the real destination.
$doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||