#!/bin/sh
 
 # This program is licensed under the GNU GPL version 2 or later.
-# (c) Richard "RichiH" Hartmann <richih@debian.org>, 2011-2014
+# (c) Richard "RichiH" Hartmann <richih@debian.org>, 2011-2015
 # For details, see LICENSE. To submit patches, you have to agree to
 # license your code under the GNU GPL version 2 or later.
 
    list-tracked \\
         [<repo>]        List all files tracked all or one repositories
    list-untracked \\
-        [<-r>] [<repo>] List all files not tracked by all or one repositories
+        [<-a>] [<-r>]
+        [<repo>]        List all files not tracked by all or one repositories
    pull                 Pull from all vcsh remotes
    push                 Push to vcsh remotes
    rename <repo> \\
           <newname>     Rename repository
    run <repo> \\
        <command>        Use this repository
-   status [<repo>]      Show statuses of all/one vcsh repositories
+   status \\
+     [--terse] [<repo>] Show statuses of all/one vcsh repositories
    upgrade <repo>       Upgrade repository to currently recommended settings
    version              Print version information
    which <substring>    Find substring in name of any tracked file
        [ x"$VCSH_CONFLICT" = x'1' ]) &&
                fatal "will stop after fetching and not try to merge!
   Once this situation has been resolved, run 'vcsh $VCSH_REPO_NAME pull' to finish cloning." 17
-       git merge origin/"$VCSH_BRANCH"
+       git -c merge.ff=true merge origin/"$VCSH_BRANCH"
        hook post-merge
        hook post-clone
        retire
 }
 
 list_tracked_by() {
-       list_tracked $2
+       list_tracked '' $2
 }
 
 list_untracked() {
        temp_file_untracked_copy=$(mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX") || fatal 'Could not create temp file'
 
        # Hack in support for `vcsh list-untracked -r`...
+       exclude_standard_opt='--exclude-standard'
        directory_opt="--directory"
        shift 1
-       while getopts "r" flag; do
-               if [ x"$1" = x'-r' ]; then
+       while getopts "ar" flag; do
+               if [ x"$1" = x'-a' ]; then
+                       unset exclude_standard_opt
+               elif [ x"$1" = x'-r' ]; then
                        unset directory_opt
                fi
                shift 1
 
 list_untracked_helper() {
        export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
-       git ls-files --others "$directory_opt" | (
+       git ls-files --others $exclude_standard_opt "$directory_opt" | (
                while read line; do
                        echo "$line"
                        directory_component=${line%%/*}
                cp $temp_file_others $temp_file_untracked || fatal 'Could not copy temp file'
        fi
        cp $temp_file_untracked $temp_file_untracked_copy || fatal 'Could not copy temp file'
-       comm -12 --nocheck-order $temp_file_others $temp_file_untracked_copy > $temp_file_untracked
+       comm -12 $temp_file_others $temp_file_untracked_copy > $temp_file_untracked
 }
 
 pull() {
 }
 
 status() {
+       if [ -t 1 ]; then
+               COLORING="-c color.status=always"
+       fi
        if [ -n "$VCSH_REPO_NAME" ]; then
                status_helper $VCSH_REPO_NAME
        else
                for VCSH_REPO_NAME in $(list); do
-                       echo "$VCSH_REPO_NAME:"
-                       status_helper $VCSH_REPO_NAME
-                       echo
+                       STATUS=$(status_helper $VCSH_REPO_NAME "$COLORING")
+                       [ -n "$STATUS" -o -z "$VCSH_STATUS_TERSE" ] && echo "$VCSH_REPO_NAME:"
+                       [ -n "$STATUS" ]            && echo "$STATUS"
+                       [ -z "$VCSH_STATUS_TERSE" ] && echo
                done
        fi
 }
 
 status_helper() {
-       GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
+       GIT_DIR=$VCSH_REPO_D/$1.git; export GIT_DIR
+       VCSH_GIT_OPTIONS=$2
        use
        remote_tracking_branch=$(git rev-parse --abbrev-ref --symbolic-full-name @{u} 2> /dev/null) && {
                commits_behind=$(git log ..${remote_tracking_branch} --oneline | wc -l)
                [ ${commits_behind} -ne 0 ] && echo "Behind $remote_tracking_branch by $commits_behind commits"
                [ ${commits_ahead} -ne 0 ] && echo "Ahead of $remote_tracking_branch by $commits_ahead commits"
        }
-       git status --short --untracked-files='no'
+       git ${VCSH_GIT_OPTIONS} status --short --untracked-files='no'
        VCSH_COMMAND_RETURN_CODE=$?
 }
 
 }
 
 which() {
-       [ -e "$VCSH_COMMAND_PARAMETER" ] || fatal "'$VCSH_COMMAND_PARAMETER' does not exist" 1
-       for VCSH_REPO_NAME in $(list); do
-               for VCSH_FILE in $(get_files); do
-                       echo "$VCSH_FILE" | grep -q "$VCSH_COMMAND_PARAMETER" && echo "$VCSH_REPO_NAME: $VCSH_FILE"
-               done
-       done | sort -u
+       output=$(for VCSH_REPO_NAME in $(list); do
+               get_files | grep -- "$VCSH_COMMAND_PARAMETER" | sed "s/^/$VCSH_REPO_NAME: /"
+       done | sort -u)
+       if [ -z "$output" ]; then
+               fatal "'$VCSH_COMMAND_PARAMETER' does not exist" 1
+       else
+               echo "$output"
+       fi
 }
 
 write_gitignore() {
      [ x"$VCSH_COMMAND" = x'push'   ]; then
        :
 elif [ x"$VCSH_COMMAND" = x'status' ]; then
+       if [ x"$2" = x'--terse' ]; then
+               VCSH_STATUS_TERSE=1; export VCSH_STATUS_TERSE
+               shift
+       fi
        VCSH_REPO_NAME=$2; export VCSH_REPO_NAME
 elif [ -n "$2" ]; then
        VCSH_COMMAND='run'; export VCSH_COMMAND