New upstream version 1.9

[debian/gzip] / build-aux / git-version-gen

diff --git a/build-aux/git-version-gen b/build-aux/git-version-gen
index 6c56147d2cf3d4b4af192537f34847ea219d5748..8647b9e38cfa7e4f51bae31a6b79c6c7d6e39b03 100755 (executable)
--- a/build-aux/git-version-gen
+++ b/build-aux/git-version-gen
@@ -1,8 +1,8 @@
 #!/bin/sh
 # Print a version string.
-scriptversion=2016-01-11.22; # UTC
+scriptversion=2017-09-13.06; # UTC
 
-# Copyright (C) 2007-2016 Free Software Foundation, Inc.
+# Copyright (C) 2007-2018 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
@@ -15,9 +15,9 @@ scriptversion=2016-01-11.22; # UTC
 # 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/>.
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-# This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/.
+# This script is derived from GIT-VERSION-GEN from GIT: https://git-scm.com/.
 # It may be run two ways:
 # - from a git repository in which the "git describe" command below
 #   produces useful output (thus requiring at least one signed tag)
@@ -101,8 +101,8 @@ while test $# -gt 0; do
   case $1 in
     --help) echo "$usage"; exit 0;;
     --version) echo "$version"; exit 0;;
-    --prefix) shift; prefix="$1";;
-    --fallback) shift; fallback="$1";;
+    --prefix) shift; prefix=${1?};;
+    --fallback) shift; fallback=${1?};;
     -*)
       echo "$0: Unknown option '$1'." >&2
       echo "$0: Try '--help' for more information." >&2
@@ -167,9 +167,10 @@ then
     # tag or the previous older version that did not?
     #   Newer: v6.10-77-g0f8faeb
     #   Older: v6.10-g0f8faeb
-    case $v in
-        *-*-*) : git describe is okay three part flavor ;;
-        *-*)
+    vprefix=`expr "X$v" : 'X\(.*\)-g[^-]*$'` || vprefix=$v
+    case $vprefix in
+        *-*) : git describe is probably okay three part flavor ;;
+        *)
             : git describe is older two part flavor
             # Recreate the number of commits and rewrite such that the
             # result is the same as if we were using the newer version
@@ -184,9 +185,9 @@ then
             ;;
     esac
 
-    # Change the first '-' to a '.', so version-comparing tools work properly.
-    # Remove the "g" in git describe's output string, to save a byte.
-    v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`;
+    # Change the penultimate "-" to ".", for version-comparing tools.
+    # Remove the "g" to save a byte.
+    v=`echo "$v" | sed 's/-\([^-]*\)-g\([^-]*\)$/.\1-\2/'`;
     v_from_git=1
 elif test "x$fallback" = x || git --version >/dev/null 2>&1; then
     v=UNKNOWN
@@ -200,7 +201,7 @@ v=`echo "$v" |sed "s/^$prefix//"`
 # string we're using came from git.  I.e., skip the test if it's "UNKNOWN"
 # or if it came from .tarball-version.
 if test "x$v_from_git" != x; then
-  # Don't declare a version "dirty" merely because a time stamp has changed.
+  # Don't declare a version "dirty" merely because a timestamp has changed.
   git update-index --refresh > /dev/null 2>&1
 
   dirty=`exec 2>/dev/null;git diff-index --name-only HEAD` || dirty=