view tests/test-grep.t @ 45125:f55099982bc5

absorb: make it explicit if empty changeset was created

If the config rewrite.empty-successor=skip is set, a message "became empty and
was dropped" is shown if the changeset became empty. If the config
rewrite.empty-successor=keep is set, absorb may create changesets even if they
became empty. It’s probably a good idea to make that explicit. Therefore the
message is changed to be a combination of both: "became empty and became ...".

Repeating the word "became" is not very elegant. This results from the fact
that "became" was and is overloaded to indicate both the change from non-empty
to empty and the successor relation. In the combinated message, both meanings
are used in one sentence.

  $ hg init t
  $ cd t
  $ echo import > port
  $ hg add port
  $ hg commit -m 0 -u spam -d '0 0'
  $ echo export >> port
  $ hg commit -m 1 -u eggs -d '1 0'
  $ echo export > port
  $ echo vaportight >> port
  $ echo 'import/export' >> port
  $ hg commit -m 2 -u spam -d '2 0'
  $ echo 'import/export' >> port
  $ hg commit -m 3 -u eggs -d '3 0'
  $ head -n 3 port > port1
  $ mv port1 port
  $ hg commit -m 4 -u spam -d '4 0'

pattern error

  $ hg grep '**test**'
  grep: invalid match pattern: nothing to repeat* (glob)
  [1]

simple

  $ hg grep -r tip:0 '.*'
  port:4:export
  port:4:vaportight
  port:4:import/export
  port:3:export
  port:3:vaportight
  port:3:import/export
  port:3:import/export
  port:2:export
  port:2:vaportight
  port:2:import/export
  port:1:import
  port:1:export
  port:0:import
  $ hg grep -r tip:0 port port
  port:4:export
  port:4:vaportight
  port:4:import/export
  port:3:export
  port:3:vaportight
  port:3:import/export
  port:3:import/export
  port:2:export
  port:2:vaportight
  port:2:import/export
  port:1:import
  port:1:export
  port:0:import

simple from subdirectory

  $ mkdir dir
  $ cd dir
  $ hg grep -r tip:0 port
  port:4:export
  port:4:vaportight
  port:4:import/export
  port:3:export
  port:3:vaportight
  port:3:import/export
  port:3:import/export
  port:2:export
  port:2:vaportight
  port:2:import/export
  port:1:import
  port:1:export
  port:0:import
  $ hg grep -r tip:0 port --config ui.relative-paths=yes
  ../port:4:export
  ../port:4:vaportight
  ../port:4:import/export
  ../port:3:export
  ../port:3:vaportight
  ../port:3:import/export
  ../port:3:import/export
  ../port:2:export
  ../port:2:vaportight
  ../port:2:import/export
  ../port:1:import
  ../port:1:export
  ../port:0:import
  $ cd ..

simple with color

  $ hg --config extensions.color= grep --config color.mode=ansi \
  >     --color=always port port -r tip:0
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m4\x1b[0m\x1b[0;36m:\x1b[0mex\x1b[0;31;1mport\x1b[0m (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m4\x1b[0m\x1b[0;36m:\x1b[0mva\x1b[0;31;1mport\x1b[0might (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m4\x1b[0m\x1b[0;36m:\x1b[0mim\x1b[0;31;1mport\x1b[0m/ex\x1b[0;31;1mport\x1b[0m (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m3\x1b[0m\x1b[0;36m:\x1b[0mex\x1b[0;31;1mport\x1b[0m (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m3\x1b[0m\x1b[0;36m:\x1b[0mva\x1b[0;31;1mport\x1b[0might (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m3\x1b[0m\x1b[0;36m:\x1b[0mim\x1b[0;31;1mport\x1b[0m/ex\x1b[0;31;1mport\x1b[0m (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m3\x1b[0m\x1b[0;36m:\x1b[0mim\x1b[0;31;1mport\x1b[0m/ex\x1b[0;31;1mport\x1b[0m (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m2\x1b[0m\x1b[0;36m:\x1b[0mex\x1b[0;31;1mport\x1b[0m (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m2\x1b[0m\x1b[0;36m:\x1b[0mva\x1b[0;31;1mport\x1b[0might (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m2\x1b[0m\x1b[0;36m:\x1b[0mim\x1b[0;31;1mport\x1b[0m/ex\x1b[0;31;1mport\x1b[0m (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m1\x1b[0m\x1b[0;36m:\x1b[0mim\x1b[0;31;1mport\x1b[0m (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m1\x1b[0m\x1b[0;36m:\x1b[0mex\x1b[0;31;1mport\x1b[0m (esc)
  \x1b[0;35mport\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m0\x1b[0m\x1b[0;36m:\x1b[0mim\x1b[0;31;1mport\x1b[0m (esc)

simple templated

  $ hg grep port -r tip:0 \
  > -T '{path}:{rev}:{node|short}:{texts % "{if(matched, text|upper, text)}"}\n'
  port:4:914fa752cdea:exPORT
  port:4:914fa752cdea:vaPORTight
  port:4:914fa752cdea:imPORT/exPORT
  port:3:95040cfd017d:exPORT
  port:3:95040cfd017d:vaPORTight
  port:3:95040cfd017d:imPORT/exPORT
  port:3:95040cfd017d:imPORT/exPORT
  port:2:3b325e3481a1:exPORT
  port:2:3b325e3481a1:vaPORTight
  port:2:3b325e3481a1:imPORT/exPORT
  port:1:8b20f75c1585:imPORT
  port:1:8b20f75c1585:exPORT
  port:0:f31323c92170:imPORT

  $ hg grep port -r tip:0 -T '{path}:{rev}:{texts}\n'
  port:4:export
  port:4:vaportight
  port:4:import/export
  port:3:export
  port:3:vaportight
  port:3:import/export
  port:3:import/export
  port:2:export
  port:2:vaportight
  port:2:import/export
  port:1:import
  port:1:export
  port:0:import

  $ hg grep port -r tip:0 -T '{path}:{tags}:{texts}\n'
  port:tip:export
  port:tip:vaportight
  port:tip:import/export
  port::export
  port::vaportight
  port::import/export
  port::import/export
  port::export
  port::vaportight
  port::import/export
  port::import
  port::export
  port::import

simple JSON (no "change" field)

  $ hg grep -r tip:0 -Tjson port
  [
   {
    "date": [4, 0],
    "lineno": 1,
    "node": "914fa752cdea87777ac1a8d5c858b0c736218f6c",
    "path": "port",
    "rev": 4,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "date": [4, 0],
    "lineno": 2,
    "node": "914fa752cdea87777ac1a8d5c858b0c736218f6c",
    "path": "port",
    "rev": 4,
    "texts": [{"matched": false, "text": "va"}, {"matched": true, "text": "port"}, {"matched": false, "text": "ight"}],
    "user": "spam"
   },
   {
    "date": [4, 0],
    "lineno": 3,
    "node": "914fa752cdea87777ac1a8d5c858b0c736218f6c",
    "path": "port",
    "rev": 4,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "date": [3, 0],
    "lineno": 1,
    "node": "95040cfd017d658c536071c6290230a613c4c2a6",
    "path": "port",
    "rev": 3,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "eggs"
   },
   {
    "date": [3, 0],
    "lineno": 2,
    "node": "95040cfd017d658c536071c6290230a613c4c2a6",
    "path": "port",
    "rev": 3,
    "texts": [{"matched": false, "text": "va"}, {"matched": true, "text": "port"}, {"matched": false, "text": "ight"}],
    "user": "eggs"
   },
   {
    "date": [3, 0],
    "lineno": 3,
    "node": "95040cfd017d658c536071c6290230a613c4c2a6",
    "path": "port",
    "rev": 3,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "eggs"
   },
   {
    "date": [3, 0],
    "lineno": 4,
    "node": "95040cfd017d658c536071c6290230a613c4c2a6",
    "path": "port",
    "rev": 3,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "eggs"
   },
   {
    "date": [2, 0],
    "lineno": 1,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "path": "port",
    "rev": 2,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "date": [2, 0],
    "lineno": 2,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "path": "port",
    "rev": 2,
    "texts": [{"matched": false, "text": "va"}, {"matched": true, "text": "port"}, {"matched": false, "text": "ight"}],
    "user": "spam"
   },
   {
    "date": [2, 0],
    "lineno": 3,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "path": "port",
    "rev": 2,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "date": [1, 0],
    "lineno": 1,
    "node": "8b20f75c158513ff5ac80bd0e5219bfb6f0eb587",
    "path": "port",
    "rev": 1,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}],
    "user": "eggs"
   },
   {
    "date": [1, 0],
    "lineno": 2,
    "node": "8b20f75c158513ff5ac80bd0e5219bfb6f0eb587",
    "path": "port",
    "rev": 1,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "eggs"
   },
   {
    "date": [0, 0],
    "lineno": 1,
    "node": "f31323c9217050ba245ee8b537c713ec2e8ab226",
    "path": "port",
    "rev": 0,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}],
    "user": "spam"
   }
  ]

simple JSON without matching lines

  $ hg grep -r tip:0 -Tjson -l port
  [
   {
    "date": [4, 0],
    "lineno": 1,
    "node": "914fa752cdea87777ac1a8d5c858b0c736218f6c",
    "path": "port",
    "rev": 4,
    "user": "spam"
   },
   {
    "date": [3, 0],
    "lineno": 1,
    "node": "95040cfd017d658c536071c6290230a613c4c2a6",
    "path": "port",
    "rev": 3,
    "user": "eggs"
   },
   {
    "date": [2, 0],
    "lineno": 1,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "path": "port",
    "rev": 2,
    "user": "spam"
   },
   {
    "date": [1, 0],
    "lineno": 1,
    "node": "8b20f75c158513ff5ac80bd0e5219bfb6f0eb587",
    "path": "port",
    "rev": 1,
    "user": "eggs"
   },
   {
    "date": [0, 0],
    "lineno": 1,
    "node": "f31323c9217050ba245ee8b537c713ec2e8ab226",
    "path": "port",
    "rev": 0,
    "user": "spam"
   }
  ]

all

  $ hg grep --traceback --all -nu port port
  port:4:4:-:spam:import/export
  port:3:4:+:eggs:import/export
  port:2:1:-:spam:import
  port:2:2:-:spam:export
  port:2:1:+:spam:export
  port:2:2:+:spam:vaportight
  port:2:3:+:spam:import/export
  port:1:2:+:eggs:export
  port:0:1:+:spam:import

all JSON

  $ hg grep --all -Tjson port port
  [
   {
    "change": "-",
    "date": [4, 0],
    "lineno": 4,
    "node": "914fa752cdea87777ac1a8d5c858b0c736218f6c",
    "path": "port",
    "rev": 4,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "change": "+",
    "date": [3, 0],
    "lineno": 4,
    "node": "95040cfd017d658c536071c6290230a613c4c2a6",
    "path": "port",
    "rev": 3,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "eggs"
   },
   {
    "change": "-",
    "date": [2, 0],
    "lineno": 1,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "path": "port",
    "rev": 2,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "change": "-",
    "date": [2, 0],
    "lineno": 2,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "path": "port",
    "rev": 2,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "change": "+",
    "date": [2, 0],
    "lineno": 1,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "path": "port",
    "rev": 2,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "change": "+",
    "date": [2, 0],
    "lineno": 2,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "path": "port",
    "rev": 2,
    "texts": [{"matched": false, "text": "va"}, {"matched": true, "text": "port"}, {"matched": false, "text": "ight"}],
    "user": "spam"
   },
   {
    "change": "+",
    "date": [2, 0],
    "lineno": 3,
    "node": "3b325e3481a1f07435d81dfdbfa434d9a0245b47",
    "path": "port",
    "rev": 2,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}, {"matched": false, "text": "/ex"}, {"matched": true, "text": "port"}],
    "user": "spam"
   },
   {
    "change": "+",
    "date": [1, 0],
    "lineno": 2,
    "node": "8b20f75c158513ff5ac80bd0e5219bfb6f0eb587",
    "path": "port",
    "rev": 1,
    "texts": [{"matched": false, "text": "ex"}, {"matched": true, "text": "port"}],
    "user": "eggs"
   },
   {
    "change": "+",
    "date": [0, 0],
    "lineno": 1,
    "node": "f31323c9217050ba245ee8b537c713ec2e8ab226",
    "path": "port",
    "rev": 0,
    "texts": [{"matched": false, "text": "im"}, {"matched": true, "text": "port"}],
    "user": "spam"
   }
  ]

other

  $ hg grep -r tip:0 -l port port
  port:4
  port:3
  port:2
  port:1
  port:0
  $ hg grep -r tip:0 import port
  port:4:import/export
  port:3:import/export
  port:3:import/export
  port:2:import/export
  port:1:import
  port:0:import

  $ hg cp port port2
  $ hg commit -m 4 -u spam -d '5 0'

follow

  $ hg grep -r tip:0 --traceback -f 'import\n\Z' port2
  [1]
  $ echo deport >> port2
  $ hg commit -m 5 -u eggs -d '6 0'
  $ hg grep -f --all -nu port port2
  port2:6:4:+:eggs:deport
  port:4:4:-:spam:import/export
  port:3:4:+:eggs:import/export
  port:2:1:-:spam:import
  port:2:2:-:spam:export
  port:2:1:+:spam:export
  port:2:2:+:spam:vaportight
  port:2:3:+:spam:import/export
  port:1:2:+:eggs:export
  port:0:1:+:spam:import

  $ hg up -q null
  $ hg grep -r 'reverse(:.)' -f port
  port:0:import

Test wdir
(at least, this shouldn't crash)

  $ hg up -q
  $ echo wport >> port2
  $ hg stat
  M port2
  $ hg grep -r 'wdir()' port
  port:2147483647:export
  port:2147483647:vaportight
  port:2147483647:import/export
  port2:2147483647:export
  port2:2147483647:vaportight
  port2:2147483647:import/export
  port2:2147483647:deport
  port2:2147483647:wport

  $ cd ..
  $ hg init t2
  $ cd t2
  $ hg grep -r tip:0 foobar foo
  [1]
  $ hg grep -r tip:0 foobar
  [1]
  $ echo blue >> color
  $ echo black >> color
  $ hg add color
  $ hg ci -m 0
  $ echo orange >> color
  $ hg ci -m 1
  $ echo black > color
  $ hg ci -m 2
  $ echo orange >> color
  $ echo blue >> color
  $ hg ci -m 3
  $ hg grep -r tip:0 orange
  color:3:orange
  color:1:orange
  $ hg grep --all orange
  color:3:+:orange
  color:2:-:orange
  color:1:+:orange
  $ hg grep --diff orange --color=debug
  [grep.filename|color][grep.sep|:][grep.rev|3][grep.sep|:][grep.inserted grep.change|+][grep.sep|:][grep.match|orange]
  [grep.filename|color][grep.sep|:][grep.rev|2][grep.sep|:][grep.deleted grep.change|-][grep.sep|:][grep.match|orange]
  [grep.filename|color][grep.sep|:][grep.rev|1][grep.sep|:][grep.inserted grep.change|+][grep.sep|:][grep.match|orange]

  $ hg grep --diff orange --color=yes
  \x1b[0;35mcolor\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m3\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;32;1m+\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;31;1morange\x1b[0m (esc)
  \x1b[0;35mcolor\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m2\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;31;1m-\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;31;1morange\x1b[0m (esc)
  \x1b[0;35mcolor\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;34m1\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;32;1m+\x1b[0m\x1b[0;36m:\x1b[0m\x1b[0;31;1morange\x1b[0m (esc)

  $ hg grep --diff orange
  color:3:+:orange
  color:2:-:orange
  color:1:+:orange

test substring match: '^' should only match at the beginning

  $ hg grep -r tip:0 '^.' --config extensions.color= --color debug
  [grep.filename|color][grep.sep|:][grep.rev|3][grep.sep|:][grep.match|b]lack
  [grep.filename|color][grep.sep|:][grep.rev|3][grep.sep|:][grep.match|o]range
  [grep.filename|color][grep.sep|:][grep.rev|3][grep.sep|:][grep.match|b]lue
  [grep.filename|color][grep.sep|:][grep.rev|2][grep.sep|:][grep.match|b]lack
  [grep.filename|color][grep.sep|:][grep.rev|1][grep.sep|:][grep.match|b]lue
  [grep.filename|color][grep.sep|:][grep.rev|1][grep.sep|:][grep.match|b]lack
  [grep.filename|color][grep.sep|:][grep.rev|1][grep.sep|:][grep.match|o]range
  [grep.filename|color][grep.sep|:][grep.rev|0][grep.sep|:][grep.match|b]lue
  [grep.filename|color][grep.sep|:][grep.rev|0][grep.sep|:][grep.match|b]lack

match in last "line" without newline

  $ "$PYTHON" -c 'fp = open("noeol", "wb"); fp.write(b"no infinite loop"); fp.close();'
  $ hg ci -Amnoeol
  adding noeol
  $ hg grep -r tip:0 loop
  noeol:4:no infinite loop

  $ cd ..

Issue685: traceback in grep -r after rename

Got a traceback when using grep on a single
revision with renamed files.

  $ hg init issue685
  $ cd issue685
  $ echo octarine > color
  $ hg ci -Amcolor
  adding color
  $ hg rename color colour
  $ hg ci -Am rename
  $ hg grep -r tip:0 octarine
  colour:1:octarine
  color:0:octarine

Used to crash here

  $ hg grep -r 1 octarine
  colour:1:octarine
  $ cd ..


Issue337: test that grep follows parent-child relationships instead
of just using revision numbers.

  $ hg init issue337
  $ cd issue337

  $ echo white > color
  $ hg commit -A -m "0 white"
  adding color

  $ echo red > color
  $ hg commit -A -m "1 red"

  $ hg update 0
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo black > color
  $ hg commit -A -m "2 black"
  created new head

  $ hg update --clean 1
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo blue > color
  $ hg commit -A -m "3 blue"

  $ hg grep --all red
  color:3:-:red
  color:1:+:red

  $ hg grep --diff red
  color:3:-:red
  color:1:+:red

Issue3885: test that changing revision order does not alter the
revisions printed, just their order.

  $ hg grep --all red -r "all()"
  color:1:+:red
  color:3:-:red

  $ hg grep --all red -r "reverse(all())"
  color:3:-:red
  color:1:+:red

  $ hg grep --diff red -r "all()"
  color:1:+:red
  color:3:-:red

  $ hg grep --diff red -r "reverse(all())"
  color:3:-:red
  color:1:+:red

  $ cd ..

  $ hg init a
  $ cd a
  $ cp "$TESTDIR/binfile.bin" .
  $ hg add binfile.bin
  $ hg ci -m 'add binfile.bin'
  $ hg grep "MaCam" --all
  binfile.bin:0:+: Binary file matches

  $ hg grep "MaCam" --diff
  binfile.bin:0:+: Binary file matches

  $ cd ..

Test for showing working of allfiles flag

  $ hg init sng
  $ cd sng
  $ echo "unmod" >> um
  $ echo old > old
  $ hg ci -q -A -m "adds unmod to um"
  $ echo "something else" >> new
  $ hg ci -A -m "second commit"
  adding new
  $ hg grep -r "." "unmod"
  um:1:unmod

Existing tracked files in the working directory are searched by default

  $ echo modified >> new
  $ echo 'added' > added; hg add added
  $ echo 'added, missing' > added-missing; hg add added-missing; rm added-missing
  $ echo 'untracked' > untracked
  $ hg rm old
  $ hg grep ''
  added:added
  new:something else
  new:modified
  um:unmod

#if symlink
Grepping a symlink greps its destination

  $ rm -f added; ln -s symlink-added added
  $ hg grep '' | grep added
  added:symlink-added

But we reject symlinks as directories components of a tracked file as
usual:

  $ mkdir dir; touch dir/f; hg add dir/f
  $ rm -rf dir; ln -s / dir
  $ hg grep ''
  abort: path 'dir/f' traverses symbolic link 'dir'
  [255]
#endif

But we can search files from some other revision with -rREV

  $ hg grep -r. mod
  um:1:unmod

  $ hg grep --diff mod
  um:0:+:unmod

  $ cd ..

Change Default of grep by ui.tweakdefaults, that is, the files not in current
working directory should not be grepp-ed on

  $ hg init ab
  $ cd ab
  $ cat <<'EOF' >> .hg/hgrc
  > [ui]
  > tweakdefaults = True
  > EOF
  $ echo "some text">>file1
  $ hg add file1
  $ hg commit -m "adds file1"
  $ hg mv file1 file2

wdir revision is hidden by default:

  $ hg grep "some"
  file2:some text

but it should be available in template dict:

  $ hg grep "some" -Tjson
  [
   {
    "date": [0, 0],
    "lineno": 1,
    "node": "ffffffffffffffffffffffffffffffffffffffff",
    "path": "file2",
    "rev": 2147483647,
    "texts": [{"matched": true, "text": "some"}, {"matched": false, "text": " text"}],
    "user": "test"
   }
  ]

  $ cd ..

test -rMULTIREV

  $ cd sng
  $ hg rm um
  $ hg commit -m "deletes um"
  $ hg grep -r "0:2" "unmod"
  um:0:unmod
  um:1:unmod
  $ hg grep -r "0:2" "unmod" um
  um:0:unmod
  um:1:unmod
  $ hg grep -r "0:2" "unmod" "glob:**/um" # Check that patterns also work
  um:0:unmod
  um:1:unmod
  $ cd ..