test command parsing and dispatch

  $ hg init a

  $ cd a

Redundant options used to crash (issue436):

  $ hg -v log -v

  $ hg -v log -v x

  $ echo a > a

  $ hg ci -Ama

  adding a

Missing arg:

  $ hg cat

  hg cat: invalid arguments

  hg cat [OPTION]... FILE...

  output the current or given revision of files

  options ([+] can be repeated):

   -o --output FORMAT       print output to file with formatted name

   -r --rev REV             print the given revision

      --decode              apply any matching decode filter

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

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

  (use 'hg cat -h' to show more help)

  [255]

Missing parameter for early option:

  $ hg log -R 2>&1 | grep 'hg log'

  hg log: option -R requires argument

  hg log [OPTION]... [FILE]

  (use 'hg log -h' to show more help)

"--" may be an option value:

  $ hg -R -- log

  abort: repository -- not found!

  [255]

  $ hg log -R --

  abort: repository -- not found!

  [255]

  $ hg log -T --

  -- (no-eol)

  $ hg log -T -- -k nomatch

Parsing of early options should stop at "--":

  $ hg cat -- --config=hooks.pre-cat=false

  --config=hooks.pre-cat=false: no such file in rev cb9a9f314b8b

  [1]

  $ hg cat -- --debugger

  --debugger: no such file in rev cb9a9f314b8b

  [1]

Unparsable form of early options:

  $ hg cat --debugg

  abort: option --debugger may not be abbreviated!

  [255]

Parsing failure of early options should be detected before executing the

command:

  $ hg log -b '--config=hooks.pre-log=false' default

  abort: option --config may not be abbreviated!

  [255]

  $ hg log -b -R. default

  abort: option -R has to be separated from other options (e.g. not -qR) and --repository may only be abbreviated as --repo!

  [255]

  $ hg log --cwd .. -b --cwd=. default

  abort: option --cwd may not be abbreviated!

  [255]

However, we can't prevent it from loading extensions and configs:

  $ cat <<EOF > bad.py

  > raise Exception('bad')

  > EOF

  $ hg log -b '--config=extensions.bad=bad.py' default

  *** failed to import extension bad from bad.py: bad

  abort: option --config may not be abbreviated!

  [255]

  $ mkdir -p badrepo/.hg

  $ echo 'invalid-syntax' > badrepo/.hg/hgrc

  $ hg log -b -Rbadrepo default

  hg: parse error at badrepo/.hg/hgrc:1: invalid-syntax

  [255]

  $ hg log -b --cwd=inexistent default

  abort: $ENOENT$: 'inexistent'

  [255]

  $ hg log -b '--config=ui.traceback=yes' 2>&1 | grep '^Traceback'

  Traceback (most recent call last):

  $ hg log -b '--config=profiling.enabled=yes' 2>&1 | grep -i sample

  Sample count: .*|No samples recorded\. (re)

Early options can't be specified in [aliases] and [defaults] because they are

applied before the command name is resolved:

  $ hg log -b '--config=alias.log=log --config=hooks.pre-log=false'

  hg log: option -b not recognized

  error in definition for alias 'log': --config may only be given on the command

  line

  [255]

  $ hg log -b '--config=defaults.log=--config=hooks.pre-log=false'

  abort: option --config may not be abbreviated!

  [255]

Shell aliases bypass any command parsing rules but for the early one:

  $ hg log -b '--config=alias.log=!echo howdy'

  howdy

Early options must come first if HGPLAIN=+strictflags is specified:

(BUG: chg cherry-picks early options to pass them as a server command)

#if no-chg

  $ HGPLAIN=+strictflags hg log -b --config='hooks.pre-log=false' default

  abort: unknown revision '--config=hooks.pre-log=false'!

  [255]

  $ HGPLAIN=+strictflags hg log -b -R. default

  abort: unknown revision '-R.'!

  [255]

  $ HGPLAIN=+strictflags hg log -b --cwd=. default

  abort: unknown revision '--cwd=.'!

  [255]

#endif

  $ HGPLAIN=+strictflags hg log -b --debugger default

  abort: unknown revision '--debugger'!

  [255]

  $ HGPLAIN=+strictflags hg log -b --config='alias.log=!echo pwned' default

  abort: unknown revision '--config=alias.log=!echo pwned'!

  [255]

  $ HGPLAIN=+strictflags hg log --config='hooks.pre-log=false' -b default

  abort: option --config may not be abbreviated!

  [255]

  $ HGPLAIN=+strictflags hg log -q --cwd=.. -b default

  abort: option --cwd may not be abbreviated!

  [255]

  $ HGPLAIN=+strictflags hg log -q -R . -b default

  abort: option -R has to be separated from other options (e.g. not -qR) and --repository may only be abbreviated as --repo!

  [255]

  $ HGPLAIN=+strictflags hg --config='hooks.pre-log=false' log -b default

  abort: pre-log hook exited with status 1

  [255]

  $ HGPLAIN=+strictflags hg --cwd .. -q -Ra log -b default

  0:cb9a9f314b8b

  $ HGPLAIN=+strictflags hg --cwd .. -q --repository a log -b default

  0:cb9a9f314b8b

  $ HGPLAIN=+strictflags hg --cwd .. -q --repo a log -b default

  0:cb9a9f314b8b

For compatibility reasons, HGPLAIN=+strictflags is not enabled by plain HGPLAIN:

  $ HGPLAIN= hg log --config='hooks.pre-log=false' -b default

  abort: pre-log hook exited with status 1

  [255]

  $ HGPLAINEXCEPT= hg log --cwd .. -q -Ra -b default

  0:cb9a9f314b8b

[defaults]

  $ hg cat a

  a

  $ cat >> $HGRCPATH <<EOF

  > [defaults]

  > cat = -r null

  > EOF

  $ hg cat a

  a: no such file in rev 000000000000

  [1]

  $ cd "$TESTTMP"

OSError "No such file or directory" / "The system cannot find the path

specified" should include filename even when it is empty

  $ hg -R a archive ''

  abort: *: '' (glob)

  [255]

#if no-outer-repo

No repo:

  $ hg cat

  abort: no repository found in '$TESTTMP' (.hg not found)!

  [255]

#endif

#if rmcwd

Current directory removed:

  $ mkdir $TESTTMP/repo1

  $ cd $TESTTMP/repo1

  $ rm -rf $TESTTMP/repo1

The output could be one of the following and something else:

 chg: abort: failed to getcwd (errno = *) (glob)

 abort: error getting current working directory: * (glob)

 sh: 0: getcwd() failed: $ENOENT$

Since the exact behavior depends on the shell, only check it returns non-zero.

  $ HGDEMANDIMPORT=disable hg version -q 2>/dev/null || false

  [1]

#endif