compat: Add simplified merge sort implementation from glibc

diff --git a/git-quiltimport.sh b/git-quiltimport.sh
index 2124df9e4a86ec446f19745043051a1b989d66d9..233e5eae1d337bff40d0adba4bbb117bbd4b5dee 100755 (executable)
--- a/git-quiltimport.sh
+++ b/git-quiltimport.sh
@@ -1,46 +1,39 @@
 #!/bin/sh
-USAGE='--dry-run --author <author> --patches </path/to/quilt/patch/directory>'
+OPTIONS_KEEPDASHDASH=
+OPTIONS_SPEC="\
+git-quiltimport [options]
+--
+n,dry-run     dry run
+author=       author name and email address for patches without any
+patches=      path to the quilt series and patches
+"
 SUBDIRECTORY_ON=Yes
 . git-sh-setup
 
 dry_run=""
 quilt_author=""
-while case "$#" in 0) break;; esac
+while test $# != 0
 do
        case "$1" in
-       --au=*|--aut=*|--auth=*|--autho=*|--author=*)
-               quilt_author=$(expr "z$1" : 'z-[^=]*\(.*\)')
-               shift
-               ;;
-
-       --au|--aut|--auth|--autho|--author)
-               case "$#" in 1) usage ;; esac
+       --author)
                shift
                quilt_author="$1"
-               shift
                ;;
-
-       --dry-run)
-               shift
+       -n|--dry-run)
                dry_run=1
                ;;
-
-       --pa=*|--pat=*|--patc=*|--patch=*|--patche=*|--patches=*)
-               QUILT_PATCHES=$(expr "z$1" : 'z-[^=]*\(.*\)')
-               shift
-               ;;
-
-       --pa|--pat|--patc|--patch|--patche|--patches)
-               case "$#" in 1) usage ;; esac
+       --patches)
                shift
                QUILT_PATCHES="$1"
-               shift
                ;;
-
+       --)
+               shift
+               break;;
        *)
-               break
+               usage
                ;;
        esac
+       shift
 done
 
 # Quilt Author
@@ -70,17 +63,23 @@ tmp_info="$tmp_dir/info"
 commit=$(git rev-parse HEAD)
 
 mkdir $tmp_dir || exit 2
-for patch_name in $(cat "$QUILT_PATCHES/series" | grep -v '^#'); do
+for patch_name in $(grep -v '^#' < "$QUILT_PATCHES/series" ); do
+       if ! [ -f "$QUILT_PATCHES/$patch_name" ] ; then
+               echo "$patch_name doesn't exist. Skipping."
+               continue
+       fi
        echo $patch_name
-       (cat $QUILT_PATCHES/$patch_name | git mailinfo "$tmp_msg" "$tmp_patch" > "$tmp_info") || exit 3
-       test -s .dotest/patch || {
+       git mailinfo "$tmp_msg" "$tmp_patch" \
+               <"$QUILT_PATCHES/$patch_name" >"$tmp_info" || exit 3
+       test -s "$tmp_patch" || {
                echo "Patch is empty.  Was it split wrong?"
                exit 1
        }
 
        # Parse the author information
-       export GIT_AUTHOR_NAME=$(sed -ne 's/Author: //p' "$tmp_info")
-       export GIT_AUTHOR_EMAIL=$(sed -ne 's/Email: //p' "$tmp_info")
+       GIT_AUTHOR_NAME=$(sed -ne 's/Author: //p' "$tmp_info")
+       GIT_AUTHOR_EMAIL=$(sed -ne 's/Email: //p' "$tmp_info")
+       export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL
        while test -z "$GIT_AUTHOR_EMAIL" && test -z "$GIT_AUTHOR_NAME" ; do
                if [ -n "$quilt_author" ] ; then
                        GIT_AUTHOR_NAME="$quilt_author_name";
@@ -106,8 +105,9 @@ for patch_name in $(cat "$QUILT_PATCHES/series" | grep -v '^#'); do
                        GIT_AUTHOR_EMAIL="$patch_author_email"
                fi
        done
-       export GIT_AUTHOR_DATE=$(sed -ne 's/Date: //p' "$tmp_info")
-       export SUBJECT=$(sed -ne 's/Subject: //p' "$tmp_info")
+       GIT_AUTHOR_DATE=$(sed -ne 's/Date: //p' "$tmp_info")
+       SUBJECT=$(sed -ne 's/Subject: //p' "$tmp_info")
+       export GIT_AUTHOR_DATE SUBJECT
        if [ -z "$SUBJECT" ] ; then
                SUBJECT=$(echo $patch_name | sed -e 's/.patch$//')
        fi