Test basic extension support

  $ cat > foobar.py <<EOF

  > import os

  > from mercurial import commands

  > 

  > def uisetup(ui):

  >     ui.write("uisetup called\\n")

  > 

  > def reposetup(ui, repo):

  >     ui.write("reposetup called for %s\\n" % os.path.basename(repo.root))

  >     ui.write("ui %s= repo.ui\\n" % (ui == repo.ui and "=" or "!"))

  > 

  > def foo(ui, *args, **kwargs):

  >     ui.write("Foo\\n")

  > 

  > def bar(ui, *args, **kwargs):

  >     ui.write("Bar\\n")

  > 

  > cmdtable = {

  >    "foo": (foo, [], "hg foo"),

  >    "bar": (bar, [], "hg bar"),

  > }

  > 

  > commands.norepo += ' bar'

  > EOF

  $ abspath=`pwd`/foobar.py

  $ mkdir barfoo

  $ cp foobar.py barfoo/__init__.py

  $ barfoopath=`pwd`/barfoo

  $ hg init a

  $ cd a

  $ echo foo > file

  $ hg add file

  $ hg commit -m 'add file'

  $ echo '[extensions]' >> $HGRCPATH

  $ echo "foobar = $abspath" >> $HGRCPATH

  $ hg foo

  uisetup called

  reposetup called for a

  ui == repo.ui

  Foo

  $ cd ..

  $ hg clone a b

  uisetup called

  reposetup called for a

  ui == repo.ui

  reposetup called for b

  ui == repo.ui

  updating to branch default

  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg bar

  uisetup called

  Bar

  $ echo 'foobar = !' >> $HGRCPATH

module/__init__.py-style

  $ echo "barfoo = $barfoopath" >> $HGRCPATH

  $ cd a

  $ hg foo

  uisetup called

  reposetup called for a

  ui == repo.ui

  Foo

  $ echo 'barfoo = !' >> $HGRCPATH

Check that extensions are loaded in phases:

  $ cat > foo.py <<EOF

  > import os

  > name = os.path.basename(__file__).rsplit('.', 1)[0]

  > print "1) %s imported" % name

  > def uisetup(ui):

  >     print "2) %s uisetup" % name

  > def extsetup():

  >     print "3) %s extsetup" % name

  > def reposetup(ui, repo):

  >    print "4) %s reposetup" % name

  > EOF

  $ cp foo.py bar.py

  $ echo 'foo = foo.py' >> $HGRCPATH

  $ echo 'bar = bar.py' >> $HGRCPATH

Command with no output, we just want to see the extensions loaded:

  $ hg paths

  1) foo imported

  1) bar imported

  2) foo uisetup

  2) bar uisetup

  3) foo extsetup

  3) bar extsetup

  4) foo reposetup

  4) bar reposetup

Check hgweb's load order:

  $ cat > hgweb.cgi <<EOF

  > #!/usr/bin/env python

  > from mercurial import demandimport; demandimport.enable()

  > from mercurial.hgweb import hgweb

  > from mercurial.hgweb import wsgicgi

  > 

  > application = hgweb('.', 'test repo')

  > wsgicgi.launch(application)

  > EOF

  $ REQUEST_METHOD='GET' PATH_INFO='/' SCRIPT_NAME='' QUERY_STRING='' \

  >    SERVER_PORT='80' SERVER_NAME='localhost' python hgweb.cgi \

  >    | grep '^[0-9]) ' # ignores HTML output

  1) foo imported

  1) bar imported

  2) foo uisetup

  2) bar uisetup

  3) foo extsetup

  3) bar extsetup

  4) foo reposetup

  4) bar reposetup

  4) foo reposetup

  4) bar reposetup

  $ echo 'foo = !' >> $HGRCPATH

  $ echo 'bar = !' >> $HGRCPATH

  $ cd ..

hide outer repo

  $ hg init

  $ cat > empty.py <<EOF

  > '''empty cmdtable

  > '''

  > cmdtable = {}

  > EOF

  $ emptypath=`pwd`/empty.py

  $ echo "empty = $emptypath" >> $HGRCPATH

  $ hg help empty

  empty extension - empty cmdtable

  no commands defined

  $ echo 'empty = !' >> $HGRCPATH

  $ cat > debugextension.py <<EOF

  > '''only debugcommands

  > '''

  > def debugfoobar(ui, repo, *args, **opts):

  >     "yet another debug command"

  >     pass

  > 

  > def foo(ui, repo, *args, **opts):

  >     """yet another foo command

  > 

  >     This command has been DEPRECATED since forever.

  >     """

  >     pass

  > 

  > cmdtable = {

  >    "debugfoobar": (debugfoobar, (), "hg debugfoobar"),

  >    "foo": (foo, (), "hg foo")

  > }

  > EOF

  $ debugpath=`pwd`/debugextension.py

  $ echo "debugextension = $debugpath" >> $HGRCPATH

  $ hg help debugextension

  debugextension extension - only debugcommands

  no commands defined

  $ hg --verbose help debugextension

  debugextension extension - only debugcommands

  list of commands:

   foo           yet another foo command

  global options:

   -R --repository REPO   repository root directory or name of overlay bundle

                          file

      --cwd DIR           change working directory

   -y --noninteractive    do not prompt, automatically pick the first choice for

                          all prompts

   -q --quiet             suppress output

   -v --verbose           enable additional output

      --config CONFIG [+] set/override config option (use 'section.name=value')

      --debug             enable debugging output

      --debugger          start debugger

      --encoding ENCODE   set the charset encoding (default: ascii)

      --encodingmode MODE set the charset encoding mode (default: strict)

      --traceback         always print a traceback on exception

      --time              time how long the command takes

      --profile           print command execution profile

      --version           output version information and exit

   -h --help              display help and exit

      --hidden            consider hidden changesets

  [+] marked option can be specified multiple times

  $ hg --debug help debugextension

  debugextension extension - only debugcommands

  list of commands:

   debugfoobar   yet another debug command

   foo           yet another foo command

  global options:

   -R --repository REPO   repository root directory or name of overlay bundle

                          file

      --cwd DIR           change working directory

   -y --noninteractive    do not prompt, automatically pick the first choice for

                          all prompts

   -q --quiet             suppress output

   -v --verbose           enable additional output

      --config CONFIG [+] set/override config option (use 'section.name=value')

      --debug             enable debugging output

      --debugger          start debugger

      --encoding ENCODE   set the charset encoding (default: ascii)

      --encodingmode MODE set the charset encoding mode (default: strict)

      --traceback         always print a traceback on exception

      --time              time how long the command takes

      --profile           print command execution profile

      --version           output version information and exit

   -h --help              display help and exit

      --hidden            consider hidden changesets

  [+] marked option can be specified multiple times

  $ echo 'debugextension = !' >> $HGRCPATH

Extension module help vs command help:

  $ echo 'extdiff =' >> $HGRCPATH

  $ hg help extdiff

  hg extdiff [OPT]... [FILE]...

  use external program to diff repository (or selected files)

      Show differences between revisions for the specified files, using an

      external program. The default program used is diff, with default options

      "-Npru".

      To select a different program, use the -p/--program option. The program

      will be passed the names of two directories to compare. To pass additional

      options to the program, use -o/--option. These will be passed before the

      names of the directories to compare.

      When two revision arguments are given, then changes are shown between

      those revisions. If only one revision is specified then that revision is

      compared to the working directory, and, when no revisions are specified,

      the working directory files are compared to its parent.

  use "hg help -e extdiff" to show help for the extdiff extension

  options:

   -p --program CMD         comparison program to run

   -o --option OPT [+]      pass option to comparison program

   -r --rev REV [+]         revision

   -c --change REV          change made by revision

   -I --include PATTERN [+] include names matching the given patterns

   -X --exclude PATTERN [+] exclude names matching the given patterns

  [+] marked option can be specified multiple times

  use "hg -v help extdiff" to show the global options

  $ hg help --extension extdiff

  extdiff extension - command to allow external programs to compare revisions

  The extdiff Mercurial extension allows you to use external programs to compare

  revisions, or revision with working directory. The external diff programs are

  called with a configurable set of options and two non-option arguments: paths

  to directories containing snapshots of files to compare.

  The extdiff extension also allows you to configure new diff commands, so you

  do not need to type "hg extdiff -p kdiff3" always.

    [extdiff]

    # add new command that runs GNU diff(1) in 'context diff' mode

    cdiff = gdiff -Nprc5

    ## or the old way:

    #cmd.cdiff = gdiff

    #opts.cdiff = -Nprc5

    # add new command called vdiff, runs kdiff3

    vdiff = kdiff3

    # add new command called meld, runs meld (no need to name twice)

    meld =

    # add new command called vimdiff, runs gvimdiff with DirDiff plugin

    # (see http://www.vim.org/scripts/script.php?script_id=102) Non

    # English user, be sure to put "let g:DirDiffDynamicDiffText = 1" in

    # your .vimrc

    vimdiff = gvim -f "+next" \

              "+execute 'DirDiff' fnameescape(argv(0)) fnameescape(argv(1))"

  Tool arguments can include variables that are expanded at runtime:

    $parent1, $plabel1 - filename, descriptive label of first parent

    $child,   $clabel  - filename, descriptive label of child revision

    $parent2, $plabel2 - filename, descriptive label of second parent

    $root              - repository root

    $parent is an alias for $parent1.

  The extdiff extension will look in your [diff-tools] and [merge-tools]

  sections for diff tool arguments, when none are specified in [extdiff].

    [extdiff]

    kdiff3 =

    [diff-tools]

    kdiff3.diffargs=--L1 '$plabel1' --L2 '$clabel' $parent $child

  You can use -I/-X and list of file or directory names like normal "hg diff"

  command. The extdiff extension makes snapshots of only needed files, so

  running the external diff program will actually be pretty fast (at least

  faster than having to compare the entire tree).

  list of commands:

   extdiff       use external program to diff repository (or selected files)

  use "hg -v help extdiff" to show builtin aliases and global options

  $ echo 'extdiff = !' >> $HGRCPATH

Test help topic with same name as extension

  $ cat > multirevs.py <<EOF

  > from mercurial import commands

  > """multirevs extension

  > Big multi-line module docstring."""

  > def multirevs(ui, repo, arg, *args, **opts):

  >     """multirevs command"""

  >     pass

  > cmdtable = {

  >    "multirevs": (multirevs, [], 'ARG')

  > }

  > commands.norepo += ' multirevs'

  > EOF

  $ echo "multirevs = multirevs.py" >> $HGRCPATH

  $ hg help multirevs

  Specifying Multiple Revisions

  """""""""""""""""""""""""""""

      When Mercurial accepts more than one revision, they may be specified

      individually, or provided as a topologically continuous range, separated

      by the ":" character.

      The syntax of range notation is [BEGIN]:[END], where BEGIN and END are

      revision identifiers. Both BEGIN and END are optional. If BEGIN is not

      specified, it defaults to revision number 0. If END is not specified, it

      defaults to the tip. The range ":" thus means "all revisions".

      If BEGIN is greater than END, revisions are treated in reverse order.

      A range acts as a closed interval. This means that a range of 3:5 gives 3,

      4 and 5. Similarly, a range of 9:6 gives 9, 8, 7, and 6.

  use "hg help -c multirevs" to see help for the multirevs command

  $ hg help -c multirevs

  hg multirevs ARG