$ echo "[extensions]" >> $HGRCPATH

  $ echo "extdiff=" >> $HGRCPATH

  $ hg init a

  $ cd a

  $ echo a > a

  $ echo b > b

  $ hg add

  adding a

  adding b

Should diff cloned directories:

  $ hg extdiff -o -r $opt

  Only in a: a

  Only in a: b

  [1]

  $ cat <<EOF >> $HGRCPATH

  > [extdiff]

  > cmd.falabala = echo

  > opts.falabala = diffing

  > cmd.edspace = echo

  > opts.edspace = "name  <user@example.com>"

  > alabalaf =

  > [merge-tools]

  > alabalaf.executable = echo

  > alabalaf.diffargs = diffing

  > EOF

  $ hg falabala

  diffing a.000000000000 a

  [1]

  $ hg help falabala

  hg falabala [OPTION]... [FILE]...

  use external program to diff repository (or selected files)

      Show differences between revisions for the specified files, using the

      following program:

        'echo'

      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.

  options ([+] can be repeated):

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

   -r --rev REV [+]         revision

   -c --change REV          change made by revision

      --per-file            compare each file instead of revision snapshots

      --confirm             prompt user before each external program invocation

      --patch               compare patches for two revisions

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

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

   -S --subrepos            recurse into subrepositories

  (some details hidden, use --verbose to show complete help)

  $ hg ci -d '0 0' -mtest1

  $ echo b >> a

  $ hg ci -d '1 0' -mtest2

Should diff cloned files directly:

  $ hg falabala -r 0:1

  diffing "*\\extdiff.*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)

  diffing */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)

  [1]

Specifying an empty revision should abort.

  $ hg extdiff -p diff --patch --rev 'ancestor()' --rev 1

  abort: empty revision on one side of range

  [255]

Test diff during merge:

  $ hg update -C 0

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

  $ echo c >> c

  $ hg add c

  $ hg ci -m "new branch" -d '1 0'

  created new head

  $ hg merge 1

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

  (branch merge, don't forget to commit)

Should diff cloned file against wc file:

  $ hg falabala

  diffing "*\\extdiff.*\\a.2a13a4d2da36\\a" "*\\a\\a" (glob) (windows !)

  diffing */extdiff.*/a.2a13a4d2da36/a */a/a (glob) (no-windows !)

  [1]

Test --change option:

  $ hg ci -d '2 0' -mtest3

  $ hg falabala -c 1

  diffing "*\\extdiff.*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob) (windows !)

  diffing */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob) (no-windows !)

  [1]

Check diff are made from the first parent:

  $ hg falabala -c 3 || echo "diff-like tools yield a non-zero exit code"

  diffing "*\\extdiff.*\\a.2a13a4d2da36\\a" "a.46c0e4daeb72\\a" (glob) (windows !)

  diffing */extdiff.*/a.2a13a4d2da36/a a.46c0e4daeb72/a (glob) (no-windows !)

  diff-like tools yield a non-zero exit code

issue3153: ensure using extdiff with removed subrepos doesn't crash:

  $ hg init suba

  $ cd suba

  $ echo suba > suba

  $ hg add

  adding suba

  $ hg ci -m "adding suba file"

  $ cd ..

  $ echo suba=suba > .hgsub

  $ hg add

  adding .hgsub

  $ hg ci -Sm "adding subrepo"

  $ echo > .hgsub

  $ hg ci -m "removing subrepo"

  $ hg falabala -r 4 -r 5 -S

  diffing a.398e36faf9c6 a.5ab95fb166c4

  [1]

Test --per-file option:

  $ hg up -q -C 3

  $ echo a2 > a

  $ echo b2 > b

  $ hg ci -d '3 0' -mtestmode1

  created new head

  $ hg falabala -c 6 --per-file

  diffing "*\\extdiff.*\\a.46c0e4daeb72\\a" "a.81906f2b98ac\\a" (glob) (windows !)

  diffing */extdiff.*/a.46c0e4daeb72/a a.81906f2b98ac/a (glob) (no-windows !)

  diffing "*\\extdiff.*\\a.46c0e4daeb72\\b" "a.81906f2b98ac\\b" (glob) (windows !)

  diffing */extdiff.*/a.46c0e4daeb72/b a.81906f2b98ac/b (glob) (no-windows !)

  [1]

Test --per-file option for gui tool:

  $ hg --config extdiff.gui.alabalaf=True alabalaf -c 6 --per-file --debug

  making snapshot of 2 files from rev 46c0e4daeb72

    a

    b

  making snapshot of 2 files from rev 81906f2b98ac

    a

    b

  running '* diffing * *' in * (backgrounded) (glob)

  running '* diffing * *' in * (backgrounded) (glob)

  cleaning up temp directory

  [1]

Test --per-file option for gui tool again:

  $ hg --config merge-tools.alabalaf.gui=True alabalaf -c 6 --per-file --debug

  diffing */extdiff.*/a.46c0e4daeb72/* a.81906f2b98ac/* (glob)

  diffing */extdiff.*/a.46c0e4daeb72/* a.81906f2b98ac/* (glob)

  making snapshot of 2 files from rev 46c0e4daeb72

    a

    b

  making snapshot of 2 files from rev 81906f2b98ac

    a

    b

  running '* diffing * *' in * (backgrounded) (glob)

  running '* diffing * *' in * (backgrounded) (glob)

  cleaning up temp directory

  [1]

Test --per-file and --confirm options:

  $ hg --config ui.interactive=True falabala -c 6 --per-file --confirm <<EOF

  > n

  > y

  > EOF

  diff a (1 of 2) [Yns?] n

  diff b (2 of 2) [Yns?] y

  diffing "*\\extdiff.*\\a.46c0e4daeb72\\b" "a.81906f2b98ac\\b" (glob) (windows !)

  diffing */extdiff.*/a.46c0e4daeb72/b a.81906f2b98ac/b (glob) (no-windows !)

  [1]

Test --per-file and --confirm options with skipping:

  $ hg --config ui.interactive=True falabala -c 6 --per-file --confirm <<EOF

  > s

  > EOF

  diff a (1 of 2) [Yns?] s

  [1]

issue4463: usage of command line configuration without additional quoting

  $ cat <<EOF >> $HGRCPATH

  > [extdiff]

  > cmd.4463a = echo

  > opts.4463a = a-naked 'single quoted' "double quoted"

  > 4463b = echo b-naked 'single quoted' "double quoted"

  > echo =

  > EOF

  $ hg update -q -C 0

  $ echo a >> a

  $ hg --debug 4463a | grep '^running'

  running 'echo a-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)

  running 'echo a-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)

  $ hg --debug 4463b | grep '^running'

  running 'echo b-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)

  running 'echo b-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)

  $ hg --debug echo | grep '^running'

  running '*echo* "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)

  running '*echo */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)

(getting options from other than extdiff section)

  $ cat <<EOF >> $HGRCPATH

  > [extdiff]

  > # using diff-tools diffargs

  > 4463b2 = echo

  > # using merge-tools diffargs

  > 4463b3 = echo

  > # no diffargs

  > 4463b4 = echo

  > [diff-tools]

  > 4463b2.diffargs = b2-naked 'single quoted' "double quoted"

  > [merge-tools]

  > 4463b3.diffargs = b3-naked 'single quoted' "double quoted"

  > EOF

  $ hg --debug 4463b2 | grep '^running'

  running 'echo b2-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)

  running 'echo b2-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)

  $ hg --debug 4463b3 | grep '^running'

  running 'echo b3-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)

  running 'echo b3-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)

  $ hg --debug 4463b4 | grep '^running'

  running 'echo "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)

  running 'echo */a $TESTTMP/a/a' in */extdiff.* (glob) (no-windows !)

  $ hg --debug 4463b4 --option b4-naked --option 'being quoted' | grep '^running'

  running 'echo b4-naked "being quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)

  running "echo b4-naked 'being quoted' */a $TESTTMP/a/a" in */extdiff.* (glob) (no-windows !)

  $ hg --debug extdiff -p echo --option echo-naked --option 'being quoted' | grep '^running'

  running 'echo echo-naked "being quoted" "*\\a" "*\\a"' in */extdiff.* (glob) (windows !)

  running "echo echo-naked 'being quoted' */a $TESTTMP/a/a" in */extdiff.* (glob) (no-windows !)

  $ touch 'sp ace'

  $ hg add 'sp ace'

  $ hg ci -m 'sp ace'

  created new head

  $ echo > 'sp ace'

Test pre-72a89cf86fcd backward compatibility with half-baked manual quoting

  $ cat <<EOF >> $HGRCPATH

  > [extdiff]

  > odd =

  > [merge-tools]

  > odd.diffargs = --foo='\$clabel' '\$clabel' "--bar=\$clabel" "\$clabel"

  > odd.executable = echo

  > EOF

  $ hg --debug odd | grep '^running'

  running '"*\\echo.exe" --foo="sp ace" "sp ace" --bar="sp ace" "sp ace"' in * (glob) (windows !)

  running "*/echo --foo='sp ace' 'sp ace' --bar='sp ace' 'sp ace'" in * (glob) (no-windows !)

Empty argument must be quoted

  $ cat <<EOF >> $HGRCPATH

  > [extdiff]

  > kdiff3 = echo

  > [merge-tools]

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

  > EOF

  $ hg --debug kdiff3 -r0 | grep '^running'

  running 'echo --L1 "@0" --L2 "" a.8a5febb7f867 a' in * (glob) (windows !)

  running "echo --L1 '@0' --L2 '' a.8a5febb7f867 a" in * (glob) (no-windows !)

Test extdiff of multiple files in tmp dir:

  $ hg update -C 0 > /dev/null

  $ echo changed > a

  $ echo changed > b

#if execbit

  $ chmod +x b

#endif

Diff in working directory, before:

  $ hg diff --git

  diff --git a/a b/a

  --- a/a

  +++ b/a

  @@ -1,1 +1,1 @@

  -a

  +changed

  diff --git a/b b/b

  old mode 100644 (execbit !)

  new mode 100755 (execbit !)

  --- a/b

  +++ b/b

  @@ -1,1 +1,1 @@

  -b

  +changed

Edit with extdiff -p:

Prepare custom diff/edit tool:

  $ cat > 'diff tool.py' << EOT

  > #!$PYTHON

  > import time

  > time.sleep(1) # avoid unchanged-timestamp problems

  > open('a/a', 'ab').write(b'edited\n')

  > open('a/b', 'ab').write(b'edited\n')

  > EOT

#if execbit

  $ chmod +x 'diff tool.py'

#endif

will change to /tmp/extdiff.TMP and populate directories a.TMP and a

and start tool

#if windows

  $ cat > 'diff tool.bat' << EOF

  > @"$PYTHON" "`pwd`/diff tool.py"

  > EOF

  $ hg extdiff -p "`pwd`/diff tool.bat"

  [1]

#else

  $ hg extdiff -p "`pwd`/diff tool.py"

  [1]

#endif

Diff in working directory, after:

  $ hg diff --git

  diff --git a/a b/a

  --- a/a

  +++ b/a

  @@ -1,1 +1,2 @@

  -a

  +changed

  +edited

  diff --git a/b b/b

  old mode 100644 (execbit !)