changelog: specify checkambig=True to revlog.__init__, to avoid ambiguity
If steps below occurs at "the same time in sec", all of mtime, ctime
and size are same between (1) and (3).
1. append data to 00changelog.i (and close transaction)
2. discard appended data by truncation (strip or rollback)
3. append same size but different data to 00changelog.i again
Therefore, cache validation doesn't work after (3) as expected.
To avoid such file stat ambiguity around truncation, this patch
specifies checkambig=True to revlog.__init__(). This makes revlog
write changes out with checkambig=True.
Even though changes of 00changelog.i themselves are written out at
changelog._finalize(), this checkambig=True is needed, because
revlog.checkinlinesize(), which is invoked at the end of
changelog._finalize(), might replace already changed 00changelog.i by
converted one.
Even after this patch, avoiding file stat ambiguity of 00changelog.i
around truncation isn't yet completed, because truncation side isn't
aware of this issue.
This is a part of ExactCacheValidationPlan.
https://www.mercurial-scm.org/wiki/ExactCacheValidationPlan
$ 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>"
> 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
--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:
#if windows
$ hg falabala -r 0:1
diffing "*\\extdiff.*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob)
[1]
#else
$ hg falabala -r 0:1
diffing */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob)
[1]
#endif
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:
#if windows
$ hg falabala
diffing "*\\extdiff.*\\a.2a13a4d2da36\\a" "*\\a\\a" (glob)
[1]
#else
$ hg falabala
diffing */extdiff.*/a.2a13a4d2da36/a */a/a (glob)
[1]
#endif
Test --change option:
$ hg ci -d '2 0' -mtest3
#if windows
$ hg falabala -c 1
diffing "*\\extdiff.*\\a.8a5febb7f867\\a" "a.34eed99112ab\\a" (glob)
[1]
#else
$ hg falabala -c 1
diffing */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob)
[1]
#endif
Check diff are made from the first parent:
#if windows
$ hg falabala -c 3 || echo "diff-like tools yield a non-zero exit code"
diffing "*\\extdiff.*\\a.2a13a4d2da36\\a" "a.46c0e4daeb72\\a" (glob)
diff-like tools yield a non-zero exit code
#else
$ hg falabala -c 3 || echo "diff-like tools yield a non-zero exit code"
diffing */extdiff.*/a.2a13a4d2da36/a a.46c0e4daeb72/a (glob)
diff-like tools yield a non-zero exit code
#endif
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]
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
#if windows
$ hg --debug 4463a | grep '^running'
running 'echo a-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob)
$ hg --debug 4463b | grep '^running'
running 'echo b-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob)
$ hg --debug echo | grep '^running'
running '*echo* "*\\a" "*\\a"' in */extdiff.* (glob)
#else
$ hg --debug 4463a | grep '^running'
running 'echo a-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob)
$ hg --debug 4463b | grep '^running'
running 'echo b-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob)
$ hg --debug echo | grep '^running'
running '*echo */a $TESTTMP/a/a' in */extdiff.* (glob)
#endif
(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
#if windows
$ hg --debug 4463b2 | grep '^running'
running 'echo b2-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob)
$ hg --debug 4463b3 | grep '^running'
running 'echo b3-naked \'single quoted\' "double quoted" "*\\a" "*\\a"' in */extdiff.* (glob)
$ hg --debug 4463b4 | grep '^running'
running 'echo "*\\a" "*\\a"' in */extdiff.* (glob)
$ hg --debug 4463b4 --option b4-naked --option 'being quoted' | grep '^running'
running 'echo b4-naked "being quoted" "*\\a" "*\\a"' in */extdiff.* (glob)
$ hg --debug extdiff -p echo --option echo-naked --option 'being quoted' | grep '^running'
running 'echo echo-naked "being quoted" "*\\a" "*\\a"' in */extdiff.* (glob)
#else
$ hg --debug 4463b2 | grep '^running'
running 'echo b2-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob)
$ hg --debug 4463b3 | grep '^running'
running 'echo b3-naked \'single quoted\' "double quoted" */a $TESTTMP/a/a' in */extdiff.* (glob)
$ hg --debug 4463b4 | grep '^running'
running 'echo */a $TESTTMP/a/a' in */extdiff.* (glob)
$ hg --debug 4463b4 --option b4-naked --option 'being quoted' | grep '^running'
running "echo b4-naked 'being quoted' */a $TESTTMP/a/a" in */extdiff.* (glob)
$ hg --debug extdiff -p echo --option echo-naked --option 'being quoted' | grep '^running'
running "echo echo-naked 'being quoted' */a $TESTTMP/a/a" in */extdiff.* (glob)
#endif
$ 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
#if windows
TODO
#else
$ hg --debug odd | grep '^running'
running "*/echo --foo='sp ace' 'sp ace' --bar='sp ace' 'sp ace'" in * (glob)
#endif
Empty argument must be quoted
$ cat <<EOF >> $HGRCPATH
> [extdiff]
> kdiff3 = echo
> [merge-tools]
> kdiff3.diffargs=--L1 \$plabel1 --L2 \$clabel \$parent \$child
> EOF
#if windows
$ hg --debug kdiff3 -r0 | grep '^running'
running 'echo --L1 "@0" --L2 "" a.8a5febb7f867 a' in * (glob)
#else
$ hg --debug kdiff3 -r0 | grep '^running'
running "echo --L1 '@0' --L2 '' a.8a5febb7f867 a" in * (glob)
#endif
#if execbit
Test extdiff of multiple files in tmp dir:
$ hg update -C 0 > /dev/null
$ echo changed > a
$ echo changed > b
$ chmod +x b
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
new mode 100755
--- a/b
+++ b/b
@@ -1,1 +1,1 @@
-b
+changed
Edit with extdiff -p:
Prepare custom diff/edit tool:
$ cat > 'diff tool.py' << EOT
> #!/usr/bin/env python
> import time
> time.sleep(1) # avoid unchanged-timestamp problems
> file('a/a', 'ab').write('edited\n')
> file('a/b', 'ab').write('edited\n')
> EOT
$ chmod +x 'diff tool.py'
will change to /tmp/extdiff.TMP and populate directories a.TMP and a
and start tool
$ hg extdiff -p "`pwd`/diff tool.py"
[1]
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
new mode 100755
--- a/b
+++ b/b
@@ -1,1 +1,2 @@
-b
+changed
+edited
Test extdiff with --option:
$ hg extdiff -p echo -o this -c 1
this */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob)
[1]
$ hg falabala -o this -c 1
diffing this */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob)
[1]
Test extdiff's handling of options with spaces in them:
$ hg edspace -c 1
name <user@example.com> */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob)
[1]
$ hg extdiff -p echo -o "name <user@example.com>" -c 1
name <user@example.com> */extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob)
[1]
Test with revsets:
$ hg extdif -p echo -c "rev(1)"
*/extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob)
[1]
$ hg extdif -p echo -r "0::1"
*/extdiff.*/a.8a5febb7f867/a a.34eed99112ab/a (glob)
[1]
Fallback to merge-tools.tool.executable|regkey
$ mkdir dir
$ cat > 'dir/tool.sh' << EOF
> #!/bin/sh
> echo "** custom diff **"
> EOF
$ chmod +x dir/tool.sh
$ tool=`pwd`/dir/tool.sh
$ hg --debug tl --config extdiff.tl= --config merge-tools.tl.executable=$tool
making snapshot of 2 files from rev * (glob)
a
b
making snapshot of 2 files from working directory
a
b
running '$TESTTMP/a/dir/tool.sh a.* a' in */extdiff.* (glob)
** custom diff **
cleaning up temp directory
[1]
$ cd ..
#endif
#if symlink
Test symlinks handling (issue1909)
$ hg init testsymlinks
$ cd testsymlinks
$ echo a > a
$ hg ci -Am adda
adding a
$ echo a >> a
$ ln -s missing linka
$ hg add linka
$ hg falabala -r 0 --traceback
diffing testsymlinks.07f494440405 testsymlinks
[1]
$ cd ..
#endif
Test handling of non-ASCII paths in generated docstrings (issue5301)
>>> open("u", "w").write("\xa5\xa5")
$ U=`cat u`
$ HGPLAIN=1 hg --config hgext.extdiff= --config extdiff.cmd.td=hi help -k xyzzy
abort: no matches
(try 'hg help' for a list of topics)
[255]
$ HGPLAIN=1 hg --config hgext.extdiff= --config extdiff.cmd.td=hi help td > /dev/null
$ LC_MESSAGES=ja_JP.UTF-8 hg --config hgext.extdiff= --config extdiff.cmd.td=$U help -k xyzzy
abort: no matches
(try 'hg help' for a list of topics)
[255]
$ LC_MESSAGES=ja_JP.UTF-8 hg --config hgext.extdiff= --config extdiff.cmd.td=$U help td \
> | grep "^ '"
'\xa5\xa5'