Pass -- to rev-list for branch/filename disambiguation

[topgit.git] / tg.sh

diff --git a/tg.sh b/tg.sh
index 0eec4d4dc3158bbc40645da742323c08beb62236..8c23d26b9a62ddcc1869bb70299862c32edd4403 100644 (file)
--- a/tg.sh
+++ b/tg.sh
@@ -20,13 +20,13 @@ die()
 # setup_hook NAME
 setup_hook()
 {
-       hook_call="\"\$(tg --hooks-path)\"/$1 \"\$@\""
+       hook_call="\"\$($tg --hooks-path)\"/$1 \"\$@\""
        if [ -f "$git_dir/hooks/$1" ] &&
           fgrep -q "$hook_call" "$git_dir/hooks/$1"; then
                # Another job well done!
                return
        fi
-       # Prepare incanation
+       # Prepare incantation
        if [ -x "$git_dir/hooks/$1" ]; then
                hook_call="$hook_call"' || exit $?'
        else
@@ -63,8 +63,8 @@ measure_branch()
        _bname="$1"; _base="$2"
        [ -n "$_base" ] || _base="refs/top-bases/$_bname"
        # The caller should've verified $name is valid
-       _commits="$(git rev-list "$_bname" ^"$_base" | wc -l)"
-       _nmcommits="$(git rev-list --no-merges "$_bname" ^"$_base" | wc -l)"
+       _commits="$(git rev-list "$_bname" ^"$_base" -- | wc -l)"
+       _nmcommits="$(git rev-list --no-merges "$_bname" ^"$_base" -- | wc -l)"
        if [ $_commits -gt 1 ]; then
                _suffix="commits"
        else
@@ -77,7 +77,7 @@ measure_branch()
 # Whether B1 is a superset of B2.
 branch_contains()
 {
-       [ -z "$(git rev-list ^"$1" "$2")" ]
+       [ -z "$(git rev-list ^"$1" "$2" --)" ]
 }
 
 # ref_exists REF
@@ -87,6 +87,13 @@ ref_exists()
        git rev-parse --verify "$@" >/dev/null 2>&1
 }
 
+# has_remote BRANCH
+# Whether BRANCH has a remote equivalent (accepts top-bases/ too)
+has_remote()
+{
+       [ -n "$base_remote" ] && ref_exists "remotes/$base_remote/$1"
+}
+
 # recurse_deps CMD NAME [BRANCHPATH...]
 # Recursively eval CMD on all dependencies of NAME.
 # CMD can refer to $_name for queried branch name,
@@ -106,9 +113,8 @@ recurse_deps()
        _depsfile="$(mktemp -t tg-depsfile.XXXXXX)"
        # Check also our base against remote base. Checking our head
        # against remote head has to be done in the helper.
-       _remotebase="refs/remotes/$base_remote/top-bases/$_name"
-       if [ -n "$base_remote" ] && ref_exists "$_remotebase"; then
-               echo "$_remotebase" >>"$_depsfile"
+       if has_remote "top-bases/$_name"; then
+               echo "refs/remotes/$base_remote/top-bases/$_name" >>"$_depsfile"
        fi
        git cat-file blob "$_name:.topdeps" >>"$_depsfile"
 
@@ -147,7 +153,7 @@ branch_needs_update()
 {
        _dep_base_update=
        if [ -n "$_dep_is_tgish" ]; then
-               if [ -n "$base_remote" ] && ref_exists "refs/remotes/$base_remote/$_dep"; then
+               if has_remote "$_dep"; then
                        branch_contains "$_dep" "refs/remotes/$base_remote/$_dep" || _dep_base_update=%
                fi
                # This can possibly override the remote check result;
@@ -203,6 +209,12 @@ switch_to_base()
 do_help()
 {
        if [ -z "$1" ] ; then
+               # This is currently invoked in all kinds of circumstances,
+               # including when the user made a usage error. Should we end up
+               # providing more than a short help message, then we should
+               # differentiate.
+               # Petr's comment: http://marc.info/?l=git&m=122718711327376&w=2
+
                ## Build available commands list for help output
 
                cmds=
@@ -216,50 +228,75 @@ do_help()
                        sep="|"
                done
 
-               echo "TopGit v0.2 - A different patch queue manager"
-               echo "Usage: tg ($cmds|help) ..."
-       elif [ -r "@sharedir@/tg-$1.txt" ] ; then
-               cat "@sharedir@/tg-$1.txt"
+               echo "TopGit v0.5 - A different patch queue manager"
+               echo "Usage: tg [-r REMOTE] ($cmds|help) ..."
+       elif [ -r "@cmddir@"/tg-$1 ] ; then
+               @cmddir@/tg-$1 -h || :
+               echo
+               if [ -r "@sharedir@/tg-$1.txt" ] ; then
+                       cat "@sharedir@/tg-$1.txt"
+               fi
        else
                echo "`basename $0`: no help for $1" 1>&2
+               do_help
+               exit 1
        fi
 }
 
 
+## Startup
+
+[ -d "@cmddir@" ] ||
+       die "No command directory: '@cmddir@'"
+
 ## Initial setup
 
 set -e
 git_dir="$(git rev-parse --git-dir)"
 root_dir="$(git rev-parse --show-cdup)"; root_dir="${root_dir:-.}"
+# Make sure root_dir doesn't end with a trailing slash.
+root_dir="${root_dir%/}"
 base_remote="$(git config topgit.remote 2>/dev/null)" || :
+tg="tg"
 # make sure merging the .top* files will always behave sanely
 setup_ours
 setup_hook "pre-commit"
 
-[ -d "@cmddir@" ] ||
-       die "No command directory: '@cmddir@'"
-
 ## Dispatch
 
 # We were sourced from another script for our utility functions;
 # this is set by hooks.
 [ -z "$tg__include" ] || return 0
 
+if [ "$1" = "-r" ]; then
+       shift
+       if [ -z "$1" ]; then
+               echo "Option -r requires an argument." >&2
+               do_help
+               exit 1
+       fi
+       base_remote="$1"; shift
+       tg="$tg -r $base_remote"
+fi
+
 cmd="$1"
-[ -n "$cmd" ] || die "He took a duck in the face at two hundred and fifty knots"
+[ -n "$cmd" ] || { do_help; exit 1; }
 shift
 
 case "$cmd" in
 help|--help|-h)
        do_help "$1"
-       exit 1;;
+       exit 0;;
 --hooks-path)
        # Internal command
        echo "@hooksdir@";;
 *)
        [ -r "@cmddir@"/tg-$cmd ] || {
                echo "Unknown subcommand: $cmd" >&2
+               do_help
                exit 1
        }
        . "@cmddir@"/tg-$cmd;;
 esac
+
+# vim:noet