parse-opt: optionally show "--no-" option string

diff --git a/git-filter-branch.sh b/git-filter-branch.sh
index 9a09ba138244b1665de78e94ce12fb8fdb878758..37e044db40bb89470bb64a4108c86d5173e03b5a 100755 (executable)
--- a/git-filter-branch.sh
+++ b/git-filter-branch.sh
@@ -232,7 +232,9 @@ while read sha1 type name
 do
        case "$force,$name" in
        ,$orig_namespace*)
-               die "Namespace $orig_namespace not empty"
+               die "Cannot create a new backup.
+A previous backup already exists in $orig_namespace
+Force overwriting the backup with -f"
        ;;
        t,$orig_namespace*)
                git update-ref -d "$name" $sha1
@@ -270,10 +272,10 @@ test $commits -eq 0 && die "Found nothing to rewrite"
 
 # Rewrite the commits
 
-i=0
+git_filter_branch__commit_count=0
 while read commit parents; do
-       i=$(($i+1))
-       printf "\rRewrite $commit ($i/$commits)"
+       git_filter_branch__commit_count=$(($git_filter_branch__commit_count+1))
+       printf "\rRewrite $commit ($git_filter_branch__commit_count/$commits)"
 
        case "$filter_subdir" in
        "")
@@ -428,7 +430,7 @@ if [ "$filter_tag_name" ]; then
                if [ "$type" = "tag" ]; then
                        # Dereference to a commit
                        sha1t="$sha1"
-                       sha1="$(git rev-parse "$sha1"^{commit} 2>/dev/null)" || continue
+                       sha1="$(git rev-parse -q "$sha1"^{commit})" || continue
                fi
 
                [ -f "../map/$sha1" ] || continue