view tests/test-hgignore.t @ 32697:19b9fc40cc51

revlog: skeleton support for version 2 revlogs

There are a number of improvements we want to make to revlogs
that will require a new version - version 2. It is unclear what the
full set of improvements will be or when we'll be done with them.
What I do know is that the process will likely take longer than a
single release, will require input from various stakeholders to
evaluate changes, and will have many contentious debates and
bikeshedding.

It is unrealistic to develop revlog version 2 up front: there
are just too many uncertainties that we won't know until things
are implemented and experiments are run. Some changes will also
be invasive and prone to bit rot, so sitting on dozens of patches
is not practical.

This commit introduces skeleton support for version 2 revlogs in
a way that is flexible and not bound by backwards compatibility
concerns.

An experimental repo requirement for denoting revlog v2 has been
added. The requirement string has a sub-version component to it.
This will allow us to declare multiple requirements in the course
of developing revlog v2. Whenever we change the in-development
revlog v2 format, we can tweak the string, creating a new
requirement and locking out old clients. This will allow us to
make as many backwards incompatible changes and experiments to
revlog v2 as we want. In other words, we can land code and make
meaningful progress towards revlog v2 while still maintaining
extreme format flexibility up until the point we freeze the
format and remove the experimental labels.

To enable the new repo requirement, you must supply an experimental
and undocumented config option. But not just any boolean flag
will do: you need to explicitly use a value that no sane person
should ever type. This is an additional guard against enabling
revlog v2 on an installation it shouldn't be enabled on. The
specific scenario I'm trying to prevent is say a user with a
4.4 client with a frozen format enabling the option but then
downgrading to 4.3 and accidentally creating repos with an
outdated and unsupported repo format. Requiring a "challenge"
string should prevent this.

Because the format is not yet finalized and I don't want to take
any chances, revlog v2's version is currently 0xDEAD. I figure
squatting on a value we're likely never to use as an actual revlog
version to mean "internal testing only" is acceptable. And
"dead" is easily recognized as something meaningful.

There is a bunch of cleanup that is needed before work on revlog
v2 begins in earnest. I plan on doing that work once this patch
is accepted and we're comfortable with the idea of starting down
this path.

  $ hg init ignorerepo
  $ cd ignorerepo

debugignore with no hgignore should be deterministic:
  $ hg debugignore
  <nevermatcher>

Issue562: .hgignore requires newline at end:

  $ touch foo
  $ touch bar
  $ touch baz
  $ cat > makeignore.py <<EOF
  > f = open(".hgignore", "w")
  > f.write("ignore\n")
  > f.write("foo\n")
  > # No EOL here
  > f.write("bar")
  > f.close()
  > EOF

  $ python makeignore.py

Should display baz only:

  $ hg status
  ? baz

  $ rm foo bar baz .hgignore makeignore.py

  $ touch a.o
  $ touch a.c
  $ touch syntax
  $ mkdir dir
  $ touch dir/a.o
  $ touch dir/b.o
  $ touch dir/c.o

  $ hg add dir/a.o
  $ hg commit -m 0
  $ hg add dir/b.o

  $ hg status
  A dir/b.o
  ? a.c
  ? a.o
  ? dir/c.o
  ? syntax

  $ echo "*.o" > .hgignore
  $ hg status
  abort: $TESTTMP/ignorerepo/.hgignore: invalid pattern (relre): *.o (glob)
  [255]

  $ echo ".*\.o" > .hgignore
  $ hg status
  A dir/b.o
  ? .hgignore
  ? a.c
  ? syntax

Ensure that comments work:

  $ touch 'foo#bar' 'quux#'
#if no-windows
  $ touch 'baz\#wat'
#endif
  $ cat <<'EOF' >> .hgignore
  > # full-line comment
  >   # whitespace-only comment line
  > syntax# pattern, no whitespace, then comment
  > a.c  # pattern, then whitespace, then comment
  > baz\\# # escaped comment character
  > foo\#b # escaped comment character
  > quux\## escaped comment character at end of name
  > EOF
  $ hg status
  A dir/b.o
  ? .hgignore
  $ rm 'foo#bar' 'quux#'
#if no-windows
  $ rm 'baz\#wat'
#endif

Check it does not ignore the current directory '.':

  $ echo "^\." > .hgignore
  $ hg status
  A dir/b.o
  ? a.c
  ? a.o
  ? dir/c.o
  ? syntax

Test that patterns from ui.ignore options are read:

  $ echo > .hgignore
  $ cat >> $HGRCPATH << EOF
  > [ui]
  > ignore.other = $TESTTMP/ignorerepo/.hg/testhgignore
  > EOF
  $ echo "glob:**.o" > .hg/testhgignore
  $ hg status
  A dir/b.o
  ? .hgignore
  ? a.c
  ? syntax

empty out testhgignore
  $ echo > .hg/testhgignore

Test relative ignore path (issue4473):

  $ cat >> $HGRCPATH << EOF
  > [ui]
  > ignore.relative = .hg/testhgignorerel
  > EOF
  $ echo "glob:*.o" > .hg/testhgignorerel
  $ cd dir
  $ hg status
  A dir/b.o
  ? .hgignore
  ? a.c
  ? syntax

  $ cd ..
  $ echo > .hg/testhgignorerel
  $ echo "syntax: glob" > .hgignore
  $ echo "re:.*\.o" >> .hgignore
  $ hg status
  A dir/b.o
  ? .hgignore
  ? a.c
  ? syntax

  $ echo "syntax: invalid" > .hgignore
  $ hg status
  $TESTTMP/ignorerepo/.hgignore: ignoring invalid syntax 'invalid' (glob)
  A dir/b.o
  ? .hgignore
  ? a.c
  ? a.o
  ? dir/c.o
  ? syntax

  $ echo "syntax: glob" > .hgignore
  $ echo "*.o" >> .hgignore
  $ hg status
  A dir/b.o
  ? .hgignore
  ? a.c
  ? syntax

  $ echo "relglob:syntax*" > .hgignore
  $ hg status
  A dir/b.o
  ? .hgignore
  ? a.c
  ? a.o
  ? dir/c.o

  $ echo "relglob:*" > .hgignore
  $ hg status
  A dir/b.o

  $ cd dir
  $ hg status .
  A b.o

  $ hg debugignore
  <includematcher includes='(?:(?:|.*/)[^/]*(?:/|$))'>

  $ hg debugignore b.o
  b.o is ignored
  (ignore rule in $TESTTMP/ignorerepo/.hgignore, line 1: '*') (glob)

  $ cd ..

Check patterns that match only the directory

  $ echo "^dir\$" > .hgignore
  $ hg status
  A dir/b.o
  ? .hgignore
  ? a.c
  ? a.o
  ? syntax

Check recursive glob pattern matches no directories (dir/**/c.o matches dir/c.o)

  $ echo "syntax: glob" > .hgignore
  $ echo "dir/**/c.o" >> .hgignore
  $ touch dir/c.o
  $ mkdir dir/subdir
  $ touch dir/subdir/c.o
  $ hg status
  A dir/b.o
  ? .hgignore
  ? a.c
  ? a.o
  ? syntax
  $ hg debugignore a.c
  a.c is not ignored
  $ hg debugignore dir/c.o
  dir/c.o is ignored
  (ignore rule in $TESTTMP/ignorerepo/.hgignore, line 2: 'dir/**/c.o') (glob)

Check using 'include:' in ignore file

  $ hg purge --all --config extensions.purge=
  $ touch foo.included

  $ echo ".*.included" > otherignore
  $ hg status -I "include:otherignore"
  ? foo.included

  $ echo "include:otherignore" >> .hgignore
  $ hg status
  A dir/b.o
  ? .hgignore
  ? otherignore

Check recursive uses of 'include:'

  $ echo "include:nested/ignore" >> otherignore
  $ mkdir nested
  $ echo "glob:*ignore" > nested/ignore
  $ hg status
  A dir/b.o

  $ cp otherignore goodignore
  $ echo "include:badignore" >> otherignore
  $ hg status
  skipping unreadable pattern file 'badignore': No such file or directory
  A dir/b.o

  $ mv goodignore otherignore

Check using 'include:' while in a non-root directory

  $ cd ..
  $ hg -R ignorerepo status
  A dir/b.o
  $ cd ignorerepo

Check including subincludes

  $ hg revert -q --all
  $ hg purge --all --config extensions.purge=
  $ echo ".hgignore" > .hgignore
  $ mkdir dir1 dir2
  $ touch dir1/file1 dir1/file2 dir2/file1 dir2/file2
  $ echo "subinclude:dir2/.hgignore" >> .hgignore
  $ echo "glob:file*2" > dir2/.hgignore
  $ hg status
  ? dir1/file1
  ? dir1/file2
  ? dir2/file1

Check including subincludes with regexs

  $ echo "subinclude:dir1/.hgignore" >> .hgignore
  $ echo "regexp:f.le1" > dir1/.hgignore

  $ hg status
  ? dir1/file2
  ? dir2/file1

Check multiple levels of sub-ignores

  $ mkdir dir1/subdir
  $ touch dir1/subdir/subfile1 dir1/subdir/subfile3 dir1/subdir/subfile4
  $ echo "subinclude:subdir/.hgignore" >> dir1/.hgignore
  $ echo "glob:subfil*3" >> dir1/subdir/.hgignore

  $ hg status
  ? dir1/file2
  ? dir1/subdir/subfile4
  ? dir2/file1

Check include subignore at the same level

  $ mv dir1/subdir/.hgignore dir1/.hgignoretwo
  $ echo "regexp:f.le1" > dir1/.hgignore
  $ echo "subinclude:.hgignoretwo" >> dir1/.hgignore
  $ echo "glob:file*2" > dir1/.hgignoretwo

  $ hg status | grep file2
  [1]
  $ hg debugignore dir1/file2
  dir1/file2 is ignored
  (ignore rule in dir2/.hgignore, line 1: 'file*2')

#if windows

Windows paths are accepted on input

  $ rm dir1/.hgignore
  $ echo "dir1/file*" >> .hgignore
  $ hg debugignore "dir1\file2"
  dir1\file2 is ignored
  (ignore rule in $TESTTMP\ignorerepo\.hgignore, line 4: 'dir1/file*')
  $ hg up -qC .

#endif