tests: use system hg only if changelog or dirstate can't be read
The bundled hg should work flawlessly in most cases. Make it depend on
the external installation only if necessary since we can't control the
whole environment.
This patch doesn't implement the "exit 80" idea proposed by Jun. I don't
want to keep the capability checking sync with the actual tests.
$ hg init repo
$ cd repo
$ echo 0 > a
$ echo 0 > b
$ echo 0 > t.h
$ mkdir t
$ echo 0 > t/x
$ echo 0 > t/b
$ echo 0 > t/e.h
$ mkdir dir.h
$ echo 0 > dir.h/foo
$ hg ci -A -m m
adding a
adding b
adding dir.h/foo
adding t.h
adding t/b
adding t/e.h
adding t/x
$ touch nottracked
$ hg locate a
a
$ hg locate NONEXISTENT
[1]
$ hg locate
a
b
dir.h/foo
t.h
t/b
t/e.h
t/x
$ hg rm a
$ hg ci -m m
$ hg locate a
[1]
$ hg locate NONEXISTENT
[1]
$ hg locate relpath:NONEXISTENT
[1]
$ hg locate
b
dir.h/foo
t.h
t/b
t/e.h
t/x
$ hg locate -r 0 a
a
$ hg locate -r 0 NONEXISTENT
[1]
$ hg locate -r 0 relpath:NONEXISTENT
[1]
$ hg locate -r 0
a
b
dir.h/foo
t.h
t/b
t/e.h
t/x
-I/-X with relative path should work:
$ cd t
$ hg locate
b
dir.h/foo
t.h
t/b
t/e.h
t/x
$ hg locate -I ../t
t/b
t/e.h
t/x
Issue294: hg remove --after dir fails when dir.* also exists
$ cd ..
$ rm -r t
$ hg rm t/b
$ hg locate 't/**'
t/b (glob)
t/e.h (glob)
t/x (glob)
$ hg files
b
dir.h/foo (glob)
t.h
t/e.h (glob)
t/x (glob)
$ hg files b
b
$ mkdir otherdir
$ cd otherdir
$ hg files path:
../b (glob)
../dir.h/foo (glob)
../t.h (glob)
../t/e.h (glob)
../t/x (glob)
$ hg files path:.
../b (glob)
../dir.h/foo (glob)
../t.h (glob)
../t/e.h (glob)
../t/x (glob)
$ hg locate b
../b (glob)
../t/b (glob)
$ hg locate '*.h'
../t.h (glob)
../t/e.h (glob)
$ hg locate path:t/x
../t/x (glob)
$ hg locate 're:.*\.h$'
../t.h (glob)
../t/e.h (glob)
$ hg locate -r 0 b
../b (glob)
../t/b (glob)
$ hg locate -r 0 '*.h'
../t.h (glob)
../t/e.h (glob)
$ hg locate -r 0 path:t/x
../t/x (glob)
$ hg locate -r 0 're:.*\.h$'
../t.h (glob)
../t/e.h (glob)
$ hg files
../b (glob)
../dir.h/foo (glob)
../t.h (glob)
../t/e.h (glob)
../t/x (glob)
$ hg files .
[1]
$ cd ../..