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15eec5153d1e27caea5343a4ce6797c7da4fd6e8
[code/vcsh.git] / vcsh
1 #!/bin/sh
2
3 # This program is licensed under the GNU GPL version 2 or later.
4 # (c) Richard "RichiH" Hartmann <richih@debian.org>, 2011-2014
5 # For details, see LICENSE. To submit patches, you have to agree to
6 # license your code under the GNU GPL version 2 or later.
7
8 # While the following is not legally binding, the author would like to
9 # explain the choice of GPLv2+ over GPLv3+.
10 # The author prefers GPLv3+ over GPLv2+ but feels it's better to maintain
11 # full compatibility's with Git. In case Git ever changes its licensing terms,
12 # which is admittedly extremely unlikely to the point of being impossible,
13 # this software will most likely follow suit.
14
15 # This should always be the first line of code to facilitate debugging
16 [ -n "$VCSH_DEBUG" ] && set -vx
17
18
19 # If '.git-HEAD' is appended to the version, you are seeing an unreleased
20 # version of vcsh; the master branch is supposed to be clean at all times
21 # so you can most likely just use it nonetheless
22 VERSION='1.20141009'
23 SELF=$(basename $0)
24
25 fatal() {
26         echo "$SELF: fatal: $1" >&2
27         exit $2
28 }
29
30 # We need to run getops as soon as possible so we catch -d and other
31 # options that will modify our behaviour.
32 # Commands are handled at the end of this script.
33 while getopts "c:dv" flag; do
34         if [ x"$1" = x'-d' ] || [ x"$1" = x'--debug' ]; then
35                 set -vx
36                 VCSH_DEBUG=1
37                 echo "debug mode on"
38                 echo "$SELF $VERSION"
39         elif [ x"$1" = x'-v' ]; then
40                 VCSH_VERBOSE=1
41                 echo "verbose mode on"
42                 echo "$SELF $VERSION"
43         elif [ x"$1" = x'-c' ]; then
44                 VCSH_OPTION_CONFIG=$OPTARG
45         fi
46         shift 1
47 done
48
49 source_all() {
50         # Source file even if it's in $PWD and does not have any slashes in it
51         case $1 in
52                 */*) . "$1";;
53                 *)   . "$PWD/$1";;
54         esac;
55 }
56
57
58 # Read configuration and set defaults if anything's not set
59 [ -n "$VCSH_DEBUG" ]                  && set -vx
60 : ${XDG_CONFIG_HOME:="$HOME/.config"}
61
62 # Read configuration files if there are any
63 [ -r "/etc/vcsh/config" ]             && . "/etc/vcsh/config"
64 [ -r "$XDG_CONFIG_HOME/vcsh/config" ] && . "$XDG_CONFIG_HOME/vcsh/config"
65 if [ -n "$VCSH_OPTION_CONFIG" ]; then
66         # Source $VCSH_OPTION_CONFIG if it can be read and is in $PWD of $PATH
67         if [ -r "$VCSH_OPTION_CONFIG" ]; then
68                 source_all "$VCSH_OPTION_CONFIG"
69         else
70                 fatal "Can not read configuration file '$VCSH_OPTION_CONFIG'" 1
71         fi
72 fi
73 [ -n "$VCSH_DEBUG" ]                  && set -vx
74
75 # Read defaults
76 : ${VCSH_REPO_D:="$XDG_CONFIG_HOME/vcsh/repo.d"}
77 : ${VCSH_HOOK_D:="$XDG_CONFIG_HOME/vcsh/hooks-enabled"}
78 : ${VCSH_BASE:="$HOME"}
79 : ${VCSH_GITIGNORE:=exact}
80 : ${VCSH_GITATTRIBUTES:=none}
81 : ${VCSH_WORKTREE:=absolute}
82
83 if [ ! "x$VCSH_GITIGNORE" = 'xexact' ] && [ ! "x$VCSH_GITIGNORE" = 'xnone' ] && [ ! "x$VCSH_GITIGNORE" = 'xrecursive' ]; then
84         fatal "'\$VCSH_GITIGNORE' must equal 'exact', 'none', or 'recursive'" 1
85 fi
86
87 if [ ! "x$VCSH_WORKTREE" = 'xabsolute' ] && [ ! "x$VCSH_WORKTREE" = 'xrelative' ]; then
88         fatal "'\$VCSH_WORKTREE' must equal 'absolute', or 'relative'" 1
89 fi
90
91
92 help() {
93         echo "usage: $SELF <options> <command>
94
95    options:
96    -c <file>            Source file
97    -d                   Enable debug mode
98    -v                   Enable verbose mode
99
100    commands:
101    clone <remote> \\
102          [<repo>]       Clone from an existing repository
103    commit               Commit in all repositories
104    delete <repo>        Delete an existing repository
105    enter <repo>         Enter repository; spawn new instance of \$SHELL
106    help                 Display this help text
107    init <repo>          Initialize a new repository
108    list                 List all repositories
109    list-tracked         List all files tracked by vcsh
110    list-tracked-by \\
111         <repo>          List files tracked by a repository
112    pull                 Pull from all vcsh remotes
113    push                 Push to vcsh remotes
114    rename <repo> \\
115           <newname>     Rename repository
116    run <repo> \\
117        <command>        Use this repository
118    status [<repo>]      Show statuses of all/one vcsh repositories
119    upgrade <repo>       Upgrade repository to currently recommended settings
120    version              Print version information
121    which <substring>    Find substring in name of any tracked file
122    write-gitignore \\
123    <repo>               Write .gitignore.d/<repo> via git ls-files
124
125    <repo> <git command> Shortcut to run git commands directly
126    <repo>               Shortcut to enter repository" >&2
127 }
128
129 debug() {
130         [ -n "$VCSH_DEBUG" ] && echo "$SELF: debug: $@"
131 }
132
133 verbose() {
134         if [ -n "$VCSH_DEBUG" ] || [ -n "$VCSH_VERBOSE" ]; then echo "$SELF: verbose: $@"; fi
135 }
136
137 error() {
138         echo "$SELF: error: $1" >&2
139 }
140
141 info() {
142         echo "$SELF: info: $1"
143 }
144
145 clone() {
146         hook pre-clone
147         init
148         git remote add origin "$GIT_REMOTE"
149         git config branch.master.remote origin
150         git config branch.master.merge  refs/heads/master
151         if [ $(git ls-remote origin master 2> /dev/null | wc -l ) -lt 1 ]; then
152                 info "remote is empty, not merging anything"
153                 exit
154         fi
155         git fetch
156         hook pre-merge
157         git ls-tree -r --name-only origin/master | (while read object; do
158                 [ -e "$object" ] &&
159                         error "'$object' exists." &&
160                         VCSH_CONFLICT=1
161         done
162         [ x"$VCSH_CONFLICT" = x'1' ]) &&
163                 fatal "will stop after fetching and not try to merge!
164   Once this situation has been resolved, run 'vcsh $VCSH_REPO_NAME pull' to finish cloning." 17
165         git merge origin/master
166         hook post-merge
167         hook post-clone
168         retire
169         hook post-clone-retired
170 }
171
172 commit() {
173         hook pre-commit
174         for VCSH_REPO_NAME in $(list); do
175                 echo "$VCSH_REPO_NAME: "
176                 GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
177                 use
178                 git commit --untracked-files=no --quiet
179                 VCSH_COMMAND_RETURN_CODE=$?
180                 echo
181         done
182         hook post-commit
183 }
184
185 delete() {
186         cd "$VCSH_BASE" || fatal "could not enter '$VCSH_BASE'" 11
187         use
188         info "This operation WILL DESTROY DATA!"
189         files=$(git ls-files)
190         echo "These files will be deleted:
191
192 $files
193
194 AGAIN, THIS WILL DELETE YOUR DATA!
195 To continue, type 'Yes, do as I say'"
196         read answer
197         [ "x$answer" = 'xYes, do as I say' ] || exit 16
198         for file in $files; do
199                 rm -f $file || info "could not delete '$file', continuing with deletion"
200         done
201         rm -rf "$GIT_DIR" || error "could not delete '$GIT_DIR'"
202 }
203
204 enter() {
205         hook pre-enter
206         use
207         $SHELL
208         hook post-enter
209 }
210
211 git_dir_exists() {
212         [ -d "$GIT_DIR" ] || fatal "no repository found for '$VCSH_REPO_NAME'" 12
213 }
214
215 hook() {
216         for hook in "$VCSH_HOOK_D/$1"* "$VCSH_HOOK_D/$VCSH_REPO_NAME.$1"*; do
217                 [ -x "$hook" ] || continue
218                 verbose "executing '$hook'"
219                 "$hook"
220         done
221 }
222
223 init() {
224         hook pre-init
225         [ ! -e "$GIT_DIR" ] || fatal "'$GIT_DIR' exists" 10
226         mkdir -p "$VCSH_BASE" || fatal "could not create '$VCSH_BASE'" 50
227         cd "$VCSH_BASE" || fatal "could not enter '$VCSH_BASE'" 11
228         git init --shared=0600
229         upgrade
230         hook post-init
231 }
232
233 list() {
234         for repo in "$VCSH_REPO_D"/*.git; do
235                 [ -d "$repo" ] && [ -r "$repo" ] && echo "$(basename "$repo" .git)"
236         done
237 }
238
239 get_files() {
240         GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
241         git ls-files
242 }
243
244 list_tracked() {
245         for VCSH_REPO_NAME in $(list); do
246                 get_files
247         done | sed "s,^,$(printf '%s\n' "$VCSH_BASE/" | \
248             sed 's/[,\&]/\\&/g')," | sort -u
249 }
250
251 list_tracked_by() {
252         use
253         git ls-files | sed "s,^,$(printf '%s\n' "$VCSH_BASE/" | \
254             sed 's/[,\&]/\\&/g')," | sort -u
255 }
256
257 pull() {
258         hook pre-pull
259         for VCSH_REPO_NAME in $(list); do
260                 printf '%s: ' "$VCSH_REPO_NAME"
261                 GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
262                 use
263                 git pull
264                 VCSH_COMMAND_RETURN_CODE=$?
265                 echo
266         done
267         hook post-pull
268 }
269
270 push() {
271         hook pre-push
272         for VCSH_REPO_NAME in $(list); do
273                 printf '%s: ' "$VCSH_REPO_NAME"
274                 GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
275                 use
276                 git push
277                 VCSH_COMMAND_RETURN_CODE=$?
278                 echo
279         done
280         hook post-push
281 }
282
283 retire() {
284         unset VCSH_DIRECTORY
285 }
286
287 list_untracked() {
288         for VCSH_REPO_NAME in $(list); do
289                 [ -n $ran_once ] && files_untracked=$(printf '%s\n' "$files_untracked" | grep -Fx "$files_other")
290                 export GIT_DIR="$VCSH_REPO_D/$VCSH_REPO_NAME.git"
291                 files_other="$(git ls-files --others)"
292                 [ -z $ran_once ] && { ran_once=1; files_untracked=$files_other; }
293         done
294         echo "$files_untracked" | sort -u
295 }
296
297 rename() {
298         git_dir_exists
299         [ -d "$GIT_DIR_NEW" ] && fatal "'$GIT_DIR_NEW' exists" 54
300         mv -f "$GIT_DIR" "$GIT_DIR_NEW" || fatal "Could not mv '$GIT_DIR' '$GIT_DIR_NEW'" 52
301
302         # Now that the repository has been renamed, we need to fix up its configuration
303         # Overwrite old name..
304         GIT_DIR=$GIT_DIR_NEW
305         VCSH_REPO_NAME=$VCSH_REPO_NAME_NEW
306         # ..and clobber all old configuration
307         upgrade
308 }
309
310 run() {
311         hook pre-run
312         use
313         "$@"
314         VCSH_COMMAND_RETURN_CODE=$?
315         hook post-run
316 }
317
318 status() {
319         if [ -n "$VCSH_REPO_NAME" ]; then
320                 GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
321                 use
322                 git status --short --untracked-files='no'
323                 VCSH_COMMAND_RETURN_CODE=$?
324         else
325                 for VCSH_REPO_NAME in $(list); do
326                         echo "$VCSH_REPO_NAME:"
327                         GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
328                         use
329                         git status --short --untracked-files='no'
330                         VCSH_COMMAND_RETURN_CODE=$?
331                         echo
332                 done
333         fi
334 }
335
336 upgrade() {
337         hook pre-upgrade
338         # fake-bare repositories are not bare, actually. Set this to false
339         # because otherwise Git complains "fatal: core.bare and core.worktree
340         # do not make sense"
341         git config core.bare false
342         # core.worktree may be absolute or relative to $GIT_DIR, depending on
343         # user preference
344         if [ ! "x$VCSH_WORKTREE" = 'xabsolute' ]; then
345                 git config core.worktree "$(cd "$GIT_DIR" && GIT_WORK_TREE=$VCSH_BASE git rev-parse --show-cdup)"
346         elif [ ! "x$VCSH_WORKTREE" = 'xrelative' ]; then
347                 git config core.worktree "$VCSH_BASE"
348         fi
349         [ ! "x$VCSH_GITIGNORE" = 'xnone' ] && git config core.excludesfile ".gitignore.d/$VCSH_REPO_NAME"
350         [ ! "x$VCSH_GITATTRIBUTES" = 'xnone' ] && git config core.attributesfile ".gitattributes.d/$VCSH_REPO_NAME"
351         git config vcsh.vcsh 'true'
352         use
353         [ -e "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" ] && git add -f "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME"
354         [ -e "$VCSH_BASE/.gitattributes.d/$VCSH_REPO_NAME" ] && git add -f "$VCSH_BASE/.gitattributes.d/$VCSH_REPO_NAME"
355         hook post-upgrade
356 }
357
358 use() {
359         git_dir_exists
360         VCSH_DIRECTORY=$VCSH_REPO_NAME; export VCSH_DIRECTORY
361 }
362
363 which() {
364         for VCSH_REPO_NAME in $(list); do
365                 for VCSH_FILE in $(get_files); do
366                         echo "$VCSH_FILE" | grep -q "$VCSH_COMMAND_PARAMETER" && echo "$VCSH_REPO_NAME: $VCSH_FILE"
367                 done
368         done | sort -u
369 }
370
371 write_gitignore() {
372         # Don't do anything if the user does not want to write gitignore
373         if [ "x$VCSH_GITIGNORE" = 'xnone' ]; then
374                 info "Not writing gitignore as '\$VCSH_GITIGNORE' is set to 'none'"
375                 exit
376         fi
377
378         use
379         cd "$VCSH_BASE" || fatal "could not enter '$VCSH_BASE'" 11
380         OLDIFS=$IFS
381         IFS=$(printf '\n\t')
382         gitignores=$(for file in $(git ls-files); do
383                 while true; do
384                         echo "$file"; new=${file%/*}
385                         [ x"$file" = x"$new" ] && break
386                         file=$new
387                 done;
388         done | sort -u)
389
390         # Contrary to GNU mktemp, mktemp on BSD/OSX requires a template for temp files
391         # Using a template makes GNU mktemp default to $PWD and not #TMPDIR for tempfile location
392         # To make every OS happy, set full path explicitly
393         tempfile=$(mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX") || fatal "could not create tempfile: '${tempfile}'" 51
394
395         echo '*' > "$tempfile" || fatal "could not write to '$tempfile'" 57
396         for gitignore in $gitignores; do
397                 echo "$gitignore" | sed 's@^@!/@' >> "$tempfile" || fatal "could not write to '$tempfile'" 57
398                 if [ "x$VCSH_GITIGNORE" = 'xrecursive' ] && [ -d "$gitignore" ]; then
399                         { echo "$gitignore/*" | sed 's@^@!/@' >> "$tempfile" || fatal "could not write to '$tempfile'" 57; }
400                 fi
401         done
402         IFS=$OLDIFS
403         if diff -N "$tempfile" "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" > /dev/null; then
404                 rm -f "$tempfile" || error "could not delete '$tempfile'"
405                 exit
406         fi
407         if [ -e "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" ]; then
408                 info "'$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME' differs from new data, moving it to '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME.bak'"
409                 mv -f "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME.bak" ||
410                         fatal "could not move '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME' to '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME.bak'" 53
411         fi
412         mv -f "$tempfile" "$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME" ||
413                 fatal "could not move '$tempfile' to '$VCSH_BASE/.gitignore.d/$VCSH_REPO_NAME'" 53
414 }
415
416 debug $(git version)
417
418 if [ ! "x$VCSH_GITIGNORE" = 'xexact' ] && [ ! "x$VCSH_GITIGNORE" = 'xnone' ] && [ ! "x$VCSH_GITIGNORE" = 'xrecursive' ]; then
419         fatal "'\$VCSH_GITIGNORE' must equal 'exact', 'none', or 'recursive'" 1
420 fi
421
422 VCSH_COMMAND=$1; export VCSH_COMMAND
423
424 case $VCSH_COMMAND in
425         clon|clo|cl) VCSH_COMMAND=clone;;
426         commi|comm|com|co) VCSH_COMMAND=commit;;
427         delet|dele|del|de) VCSH_COMMAND=delete;;
428         ente|ent|en) VCSH_COMMAND=enter;;
429         hel|he) VCSH_COMMAND=help;;
430         ini|in) VCSH_COMMAND=init;;
431         pul) VCSH_COMMAND=pull;;
432         pus) VCSH_COMMAND=push;;
433         renam|rena|ren|re) VCSH_COMMAND=rename;;
434         ru) VCSH_COMMAND=run;;
435         statu|stat|sta|st) VCSH_COMMAND=status;;
436         upgrad|upgra|upgr|up) VCSH_COMMAND=upgrade;;
437         versio|versi|vers|ver|ve) VCSH_COMMAND=version;;
438         which|whi|wh) VCSH_COMMAND=which;;
439         write|writ|wri|wr) VCSH_COMMAND=write-gitignore;;
440 esac    
441
442 if [ x"$VCSH_COMMAND" = x'clone' ]; then
443         [ -z "$2" ] && fatal "$VCSH_COMMAND: please specify a remote" 1
444         GIT_REMOTE="$2"
445         [ -n "$3" ] && VCSH_REPO_NAME=$3 || VCSH_REPO_NAME=$(basename "${GIT_REMOTE#*:}" .git)
446         [ -z "$VCSH_REPO_NAME" ] && fatal "$VCSH_COMMAND: could not determine repository name" 1
447         export VCSH_REPO_NAME
448         GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
449 elif [ "$VCSH_COMMAND" = 'version' ]; then
450         echo "$SELF $VERSION"
451         git version
452         exit
453 elif [ x"$VCSH_COMMAND" = x'which' ]; then
454         [ -z "$2" ] && fatal "$VCSH_COMMAND: please specify a filename" 1
455         [ -n "$3" ] && fatal "$VCSH_COMMAND: too many parameters" 1
456         VCSH_COMMAND_PARAMETER=$2; export VCSH_COMMAND_PARAMETER
457 elif [ x"$VCSH_COMMAND" = x'delete' ]           ||
458      [ x"$VCSH_COMMAND" = x'enter' ]            ||
459      [ x"$VCSH_COMMAND" = x'init' ]             ||
460      [ x"$VCSH_COMMAND" = x'list-tracked-by' ]  ||
461      [ x"$VCSH_COMMAND" = x'rename' ]           ||
462      [ x"$VCSH_COMMAND" = x'run' ]              ||
463      [ x"$VCSH_COMMAND" = x'upgrade' ]          ||
464      [ x"$VCSH_COMMAND" = x'write-gitignore' ]; then
465         [ -z "$2" ]                                     && fatal "$VCSH_COMMAND: please specify repository to work on" 1
466         [ x"$VCSH_COMMAND" = x'rename' ] && [ -z "$3" ] && fatal "$VCSH_COMMAND: please specify a target name" 1
467         [ x"$VCSH_COMMAND" = x'run'    ] && [ -z "$3" ] && fatal "$VCSH_COMMAND: please specify a command" 1
468         VCSH_REPO_NAME=$2; export VCSH_REPO_NAME
469         GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
470         [ x"$VCSH_COMMAND" = x'rename' ] && { VCSH_REPO_NAME_NEW=$3; export VCSH_REPO_NAME_NEW;
471                                               GIT_DIR_NEW=$VCSH_REPO_D/$VCSH_REPO_NAME_NEW.git; export GIT_DIR_NEW; }
472         [ x"$VCSH_COMMAND" = x'run' ]    && shift 2
473 elif [ x"$VCSH_COMMAND" = x'commit' ] ||
474      [ x"$VCSH_COMMAND" = x'list'   ] ||
475      [ x"$VCSH_COMMAND" = x'list-tracked' ] ||
476      [ x"$VCSH_COMMAND" = x'list-untracked' ] ||
477      [ x"$VCSH_COMMAND" = x'pull'   ] ||
478      [ x"$VCSH_COMMAND" = x'push'   ]; then
479         :
480 elif [ x"$VCSH_COMMAND" = x'status' ]; then
481         VCSH_REPO_NAME=$2; export VCSH_REPO_NAME
482 elif [ -n "$2" ]; then
483         VCSH_COMMAND='run'; export VCSH_COMMAND
484         VCSH_REPO_NAME=$1; export VCSH_REPO_NAME
485         GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
486         [ -d "$GIT_DIR" ] || { help; exit 1; }
487         shift 1
488         set -- "git" "$@"
489 elif [ -n "$VCSH_COMMAND" ]; then
490         VCSH_COMMAND='enter'; export VCSH_COMMAND
491         VCSH_REPO_NAME=$1; export VCSH_REPO_NAME
492         GIT_DIR=$VCSH_REPO_D/$VCSH_REPO_NAME.git; export GIT_DIR
493         [ -d "$GIT_DIR" ] || { help; exit 1; }
494 else
495         # $1 is empty, or 'help'
496         help && exit
497 fi
498
499 # Did we receive a directory instead of a name?
500 # Mangle the input to fit normal operation.
501 if echo "$VCSH_REPO_NAME" | grep -q '/'; then
502         GIT_DIR=$VCSH_REPO_NAME; export GIT_DIR
503         VCSH_REPO_NAME=$(basename "$VCSH_REPO_NAME" .git); export VCSH_REPO_NAME
504 fi
505
506 check_dir() {
507         check_directory="$1"
508         if [ ! -d "$check_directory" ]; then
509                 if [ -e "$check_directory" ]; then
510                         fatal "'$check_directory' exists but is not a directory" 13
511                 else
512                         verbose "attempting to create '$check_directory'"
513                         mkdir -p "$check_directory" || fatal "could not create '$check_directory'" 50
514                 fi
515         fi
516 }
517
518 check_dir "$VCSH_REPO_D"
519 [ ! "x$VCSH_GITIGNORE" = 'xnone' ] && check_dir "$VCSH_BASE/.gitignore.d"
520 [ ! "x$VCSH_GITATTRIBUTES" = 'xnone' ] && check_dir "$VCSH_BASE/.gitattributes.d"
521
522 verbose "$VCSH_COMMAND begin"
523 VCSH_COMMAND=$(echo "$VCSH_COMMAND" | sed 's/-/_/g'); export VCSH_COMMAND
524 hook pre-command
525 $VCSH_COMMAND "$@"
526 hook post-command
527 verbose "$VCSH_COMMAND end, exiting"
528 exit $VCSH_COMMAND_RETURN_CODE