dirstate: Remove the flat Rust DirstateMap implementation
Before this changeset we had two Rust implementations of `DirstateMap`.
This removes the "flat" DirstateMap so that the "tree" DirstateMap is always
used when Rust enabled. This simplifies the code a lot, and will enable
(in the next changeset) further removal of a trait abstraction.
This is a performance regression when:
* Rust is enabled, and
* The repository uses the legacy dirstate-v1 file format, and
* For `hg status`, unknown files are not listed (such as with `-mard`)
The regression is about 100 milliseconds for `hg status -mard` on a
semi-large repository (mozilla-central), from ~320ms to ~420ms.
We deem this to be small enough to be worth it.
The new dirstate-v2 is still experimental at this point, but we aim to
stabilize it (though not yet enable it by default for new repositories)
in Mercurial 6.0. Eventually, upgrating repositories to dirsate-v2 will
eliminate this regression (and enable other performance improvements).
# Background
The flat DirstateMap was introduced with the first Rust implementation of the
status algorithm. It works similarly to the previous Python + C one, with a
single `HashMap` that associates file paths to a `DirstateEntry` (where Python
has a dict).
We later added the tree DirstateMap where the root of the tree contains nodes
for files and directories that are directly at the root of the repository,
and nodes for directories can contain child nodes representing the files and
directly that *they* contain directly. The shape of this tree mirrors that of
the working directory in the filesystem. This enables the status algorithm to
traverse this tree in tandem with traversing the filesystem tree, which in
turns enables a more efficient algorithm.
Furthermore, the new dirstate-v2 file format is also based on a tree of the
same shape. The tree DirstateMap can access a dirstate-v2 file without parsing
it: binary data in a single large (possibly memory-mapped) bytes buffer is
traversed on demand. This allows `DirstateMap` creation to take `O(1)` time.
(Mutation works by creating new in-memory nodes with copy-on-write semantics,
and serialization is append-mostly.)
The tradeoff is that for "legacy" repositories that use the dirstate-v1 file
format, parsing that file into a tree DirstateMap takes more time. Profiling
shows that this time is dominated by `HashMap`. For a dirstate containing `F`
files with an average `D` directory depth, the flat DirstateMap does parsing
in `O(F)` number of HashMap operations but the tree DirstateMap in `O(F × D)`
operations, since each node has its own HashMap containing its child nodes.
This slower costs ~140ms on an old snapshot of mozilla-central, and ~80ms
on an old snapshot of the Netbeans repository.
The status algorithm is faster, but with `-mard` (when not listing unknown
files) it is typically not faster *enough* to compensate the slower parsing.
Both Rust implementations are always faster than the Python + C implementation
# Benchmark results
All benchmarks are run on changeset 98c0408324e6, with repositories that use
the dirstate-v1 file format, on a server with 4 CPU cores and 4 CPU threads
(no HyperThreading).
`hg status` benchmarks show wall clock times of the entire command as the
average and standard deviation of serveral runs, collected by
https://github.com/sharkdp/hyperfine and reformated.
Parsing benchmarks are wall clock time of the Rust function that converts a
bytes buffer of the dirstate file into the `DirstateMap` data structure as
used by the status algorithm. A single run each, collected by running
`hg status` this environment variable:
RUST_LOG=hg::dirstate::dirstate_map=trace,hg::dirstate_tree::dirstate_map=trace
Benchmark 1: Rust flat DirstateMap → Rust tree DirstateMap
hg status
mozilla-clean 562.3 ms ± 2.0 ms → 462.5 ms ± 0.6 ms 1.22 ± 0.00 times faster
mozilla-dirty 859.6 ms ± 2.2 ms → 719.5 ms ± 3.2 ms 1.19 ± 0.01 times faster
mozilla-ignored 558.2 ms ± 3.0 ms → 457.9 ms ± 2.9 ms 1.22 ± 0.01 times faster
mozilla-unknowns 859.4 ms ± 5.7 ms → 716.0 ms ± 4.7 ms 1.20 ± 0.01 times faster
netbeans-clean 336.5 ms ± 0.9 ms → 339.5 ms ± 0.4 ms 0.99 ± 0.00 times faster
netbeans-dirty 491.4 ms ± 1.6 ms → 475.1 ms ± 1.2 ms 1.03 ± 0.00 times faster
netbeans-ignored 343.7 ms ± 1.0 ms → 347.8 ms ± 0.4 ms 0.99 ± 0.00 times faster
netbeans-unknowns 484.3 ms ± 1.0 ms → 466.0 ms ± 1.2 ms 1.04 ± 0.00 times faster
hg status -mard
mozilla-clean 317.3 ms ± 0.6 ms → 422.5 ms ± 1.2 ms 0.75 ± 0.00 times faster
mozilla-dirty 315.4 ms ± 0.6 ms → 417.7 ms ± 1.1 ms 0.76 ± 0.00 times faster
mozilla-ignored 314.6 ms ± 0.6 ms → 417.4 ms ± 1.0 ms 0.75 ± 0.00 times faster
mozilla-unknowns 312.9 ms ± 0.9 ms → 417.3 ms ± 1.6 ms 0.75 ± 0.00 times faster
netbeans-clean 212.0 ms ± 0.6 ms → 283.6 ms ± 0.8 ms 0.75 ± 0.00 times faster
netbeans-dirty 211.4 ms ± 1.0 ms → 283.4 ms ± 1.6 ms 0.75 ± 0.01 times faster
netbeans-ignored 211.4 ms ± 0.9 ms → 283.9 ms ± 0.8 ms 0.74 ± 0.01 times faster
netbeans-unknowns 211.1 ms ± 0.6 ms → 283.4 ms ± 1.0 ms 0.74 ± 0.00 times faster
Parsing
mozilla-clean 38.4ms → 177.6ms
mozilla-dirty 38.8ms → 177.0ms
mozilla-ignored 38.8ms → 178.0ms
mozilla-unknowns 38.7ms → 176.9ms
netbeans-clean 16.5ms → 97.3ms
netbeans-dirty 16.5ms → 98.4ms
netbeans-ignored 16.9ms → 97.4ms
netbeans-unknowns 16.9ms → 96.3ms
Benchmark 2: Python + C dirstatemap → Rust tree DirstateMap
hg status
mozilla-clean 1261.0 ms ± 3.6 ms → 461.1 ms ± 0.5 ms 2.73 ± 0.00 times faster
mozilla-dirty 2293.4 ms ± 9.1 ms → 719.6 ms ± 3.6 ms 3.19 ± 0.01 times faster
mozilla-ignored 1240.4 ms ± 2.3 ms → 457.7 ms ± 1.9 ms 2.71 ± 0.00 times faster
mozilla-unknowns 2283.3 ms ± 9.0 ms → 719.7 ms ± 3.8 ms 3.17 ± 0.01 times faster
netbeans-clean 879.7 ms ± 3.5 ms → 339.9 ms ± 0.5 ms 2.59 ± 0.00 times faster
netbeans-dirty 1257.3 ms ± 4.7 ms → 474.6 ms ± 1.6 ms 2.65 ± 0.01 times faster
netbeans-ignored 943.9 ms ± 1.9 ms → 347.3 ms ± 1.1 ms 2.72 ± 0.00 times faster
netbeans-unknowns 1188.1 ms ± 5.0 ms → 465.2 ms ± 2.3 ms 2.55 ± 0.01 times faster
hg status -mard
mozilla-clean 903.2 ms ± 3.6 ms → 423.4 ms ± 2.2 ms 2.13 ± 0.01 times faster
mozilla-dirty 884.6 ms ± 4.5 ms → 417.3 ms ± 1.4 ms 2.12 ± 0.01 times faster
mozilla-ignored 881.9 ms ± 1.3 ms → 417.3 ms ± 0.8 ms 2.11 ± 0.00 times faster
mozilla-unknowns 878.5 ms ± 1.9 ms → 416.4 ms ± 0.9 ms 2.11 ± 0.00 times faster
netbeans-clean 434.9 ms ± 1.8 ms → 284.0 ms ± 0.8 ms 1.53 ± 0.01 times faster
netbeans-dirty 434.1 ms ± 0.8 ms → 283.1 ms ± 0.8 ms 1.53 ± 0.00 times faster
netbeans-ignored 431.7 ms ± 1.1 ms → 283.6 ms ± 1.8 ms 1.52 ± 0.01 times faster
netbeans-unknowns 433.0 ms ± 1.3 ms → 283.5 ms ± 0.7 ms 1.53 ± 0.00 times faster
Differential Revision: https://phab.mercurial-scm.org/D11516
#testcases dirstate-v1 dirstate-v2
#if no-rust
$ hg init repo0 --config format.exp-dirstate-v2=1
abort: dirstate v2 format requested by config but not supported (requires Rust extensions)
[255]
#endif
#if dirstate-v2
#require rust
$ echo '[format]' >> $HGRCPATH
$ echo 'exp-dirstate-v2=1' >> $HGRCPATH
#endif
$ hg init repo1
$ cd repo1
$ mkdir a b a/1 b/1 b/2
$ touch in_root a/in_a b/in_b a/1/in_a_1 b/1/in_b_1 b/2/in_b_2
hg status in repo root:
$ hg status
? a/1/in_a_1
? a/in_a
? b/1/in_b_1
? b/2/in_b_2
? b/in_b
? in_root
hg status . in repo root:
$ hg status .
? a/1/in_a_1
? a/in_a
? b/1/in_b_1
? b/2/in_b_2
? b/in_b
? in_root
$ hg status --cwd a
? a/1/in_a_1
? a/in_a
? b/1/in_b_1
? b/2/in_b_2
? b/in_b
? in_root
$ hg status --cwd a .
? 1/in_a_1
? in_a
$ hg status --cwd a ..
? 1/in_a_1
? in_a
? ../b/1/in_b_1
? ../b/2/in_b_2
? ../b/in_b
? ../in_root
$ hg status --cwd b
? a/1/in_a_1
? a/in_a
? b/1/in_b_1
? b/2/in_b_2
? b/in_b
? in_root
$ hg status --cwd b .
? 1/in_b_1
? 2/in_b_2
? in_b
$ hg status --cwd b ..
? ../a/1/in_a_1
? ../a/in_a
? 1/in_b_1
? 2/in_b_2
? in_b
? ../in_root
$ hg status --cwd a/1
? a/1/in_a_1
? a/in_a
? b/1/in_b_1
? b/2/in_b_2
? b/in_b
? in_root
$ hg status --cwd a/1 .
? in_a_1
$ hg status --cwd a/1 ..
? in_a_1
? ../in_a
$ hg status --cwd b/1
? a/1/in_a_1
? a/in_a
? b/1/in_b_1
? b/2/in_b_2
? b/in_b
? in_root
$ hg status --cwd b/1 .
? in_b_1
$ hg status --cwd b/1 ..
? in_b_1
? ../2/in_b_2
? ../in_b
$ hg status --cwd b/2
? a/1/in_a_1
? a/in_a
? b/1/in_b_1
? b/2/in_b_2
? b/in_b
? in_root
$ hg status --cwd b/2 .
? in_b_2
$ hg status --cwd b/2 ..
? ../1/in_b_1
? in_b_2
? ../in_b
combining patterns with root and patterns without a root works
$ hg st a/in_a re:.*b$
? a/in_a
? b/in_b
tweaking defaults works
$ hg status --cwd a --config ui.tweakdefaults=yes
? 1/in_a_1
? in_a
? ../b/1/in_b_1
? ../b/2/in_b_2
? ../b/in_b
? ../in_root
$ HGPLAIN=1 hg status --cwd a --config ui.tweakdefaults=yes
? a/1/in_a_1 (glob)
? a/in_a (glob)
? b/1/in_b_1 (glob)
? b/2/in_b_2 (glob)
? b/in_b (glob)
? in_root
$ HGPLAINEXCEPT=tweakdefaults hg status --cwd a --config ui.tweakdefaults=yes
? 1/in_a_1
? in_a
? ../b/1/in_b_1
? ../b/2/in_b_2
? ../b/in_b
? ../in_root (glob)
relative paths can be requested
$ hg status --cwd a --config ui.relative-paths=yes
? 1/in_a_1
? in_a
? ../b/1/in_b_1
? ../b/2/in_b_2
? ../b/in_b
? ../in_root
$ hg status --cwd a . --config ui.relative-paths=legacy
? 1/in_a_1
? in_a
$ hg status --cwd a . --config ui.relative-paths=no
? a/1/in_a_1
? a/in_a
commands.status.relative overrides ui.relative-paths
$ cat >> $HGRCPATH <<EOF
> [ui]
> relative-paths = False
> [commands]
> status.relative = True
> EOF
$ hg status --cwd a
? 1/in_a_1
? in_a
? ../b/1/in_b_1
? ../b/2/in_b_2
? ../b/in_b
? ../in_root
$ HGPLAIN=1 hg status --cwd a
? a/1/in_a_1 (glob)
? a/in_a (glob)
? b/1/in_b_1 (glob)
? b/2/in_b_2 (glob)
? b/in_b (glob)
? in_root
if relative paths are explicitly off, tweakdefaults doesn't change it
$ cat >> $HGRCPATH <<EOF
> [commands]
> status.relative = False
> EOF
$ hg status --cwd a --config ui.tweakdefaults=yes
? a/1/in_a_1
? a/in_a
? b/1/in_b_1
? b/2/in_b_2
? b/in_b
? in_root
$ cd ..
$ hg init repo2
$ cd repo2
$ touch modified removed deleted ignored
$ echo "^ignored$" > .hgignore
$ hg ci -A -m 'initial checkin'
adding .hgignore
adding deleted
adding modified
adding removed
$ touch modified added unknown ignored
$ hg add added
$ hg remove removed
$ rm deleted
hg status:
$ hg status
A added
R removed
! deleted
? unknown
hg status modified added removed deleted unknown never-existed ignored:
$ hg status modified added removed deleted unknown never-existed ignored
never-existed: * (glob)
A added
R removed
! deleted
? unknown
$ hg copy modified copied
hg status -C:
$ hg status -C
A added
A copied
modified
R removed
! deleted
? unknown
hg status -A:
$ hg status -A
A added
A copied
modified
R removed
! deleted
? unknown
I ignored
C .hgignore
C modified
$ hg status -A -T '{status} {path} {node|shortest}\n'
A added ffff
A copied ffff
R removed ffff
! deleted ffff
? unknown ffff
I ignored ffff
C .hgignore ffff
C modified ffff
$ hg status -A -Tjson
[
{
"itemtype": "file",
"path": "added",
"status": "A"
},
{
"itemtype": "file",
"path": "copied",
"source": "modified",
"status": "A"
},
{
"itemtype": "file",
"path": "removed",
"status": "R"
},
{
"itemtype": "file",
"path": "deleted",
"status": "!"
},
{
"itemtype": "file",
"path": "unknown",
"status": "?"
},
{
"itemtype": "file",
"path": "ignored",
"status": "I"
},
{
"itemtype": "file",
"path": ".hgignore",
"status": "C"
},
{
"itemtype": "file",
"path": "modified",
"status": "C"
}
]
$ hg status -A -Tpickle > pickle
>>> from __future__ import print_function
>>> from mercurial import util
>>> pickle = util.pickle
>>> data = sorted((x[b'status'].decode(), x[b'path'].decode()) for x in pickle.load(open("pickle", r"rb")))
>>> for s, p in data: print("%s %s" % (s, p))
! deleted
? pickle
? unknown
A added
A copied
C .hgignore
C modified
I ignored
R removed
$ rm pickle
$ echo "^ignoreddir$" > .hgignore
$ mkdir ignoreddir
$ touch ignoreddir/file
Test templater support:
$ hg status -AT "[{status}]\t{if(source, '{source} -> ')}{path}\n"
[M] .hgignore
[A] added
[A] modified -> copied
[R] removed
[!] deleted
[?] ignored
[?] unknown
[I] ignoreddir/file
[C] modified
$ hg status -AT default
M .hgignore
A added
A copied
modified
R removed
! deleted
? ignored
? unknown
I ignoreddir/file
C modified
$ hg status -T compact
abort: "status" not in template map
[255]
hg status ignoreddir/file:
$ hg status ignoreddir/file
hg status -i ignoreddir/file:
$ hg status -i ignoreddir/file
I ignoreddir/file
$ cd ..
Check 'status -q' and some combinations
$ hg init repo3
$ cd repo3
$ touch modified removed deleted ignored
$ echo "^ignored$" > .hgignore
$ hg commit -A -m 'initial checkin'
adding .hgignore
adding deleted
adding modified
adding removed
$ touch added unknown ignored
$ hg add added
$ echo "test" >> modified
$ hg remove removed
$ rm deleted
$ hg copy modified copied
Specify working directory revision explicitly, that should be the same as
"hg status"
$ hg status --change "wdir()"
M modified
A added
A copied
R removed
! deleted
? unknown
Run status with 2 different flags.
Check if result is the same or different.
If result is not as expected, raise error
$ assert() {
> hg status $1 > ../a
> hg status $2 > ../b
> if diff ../a ../b > /dev/null; then
> out=0
> else
> out=1
> fi
> if [ $3 -eq 0 ]; then
> df="same"
> else
> df="different"
> fi
> if [ $out -ne $3 ]; then
> echo "Error on $1 and $2, should be $df."
> fi
> }
Assert flag1 flag2 [0-same | 1-different]
$ assert "-q" "-mard" 0
$ assert "-A" "-marduicC" 0
$ assert "-qA" "-mardcC" 0
$ assert "-qAui" "-A" 0
$ assert "-qAu" "-marducC" 0
$ assert "-qAi" "-mardicC" 0
$ assert "-qu" "-u" 0
$ assert "-q" "-u" 1
$ assert "-m" "-a" 1
$ assert "-r" "-d" 1
$ cd ..
$ hg init repo4
$ cd repo4
$ touch modified removed deleted
$ hg ci -q -A -m 'initial checkin'
$ touch added unknown
$ hg add added
$ hg remove removed
$ rm deleted
$ echo x > modified
$ hg copy modified copied
$ hg ci -m 'test checkin' -d "1000001 0"
$ rm *
$ touch unrelated
$ hg ci -q -A -m 'unrelated checkin' -d "1000002 0"
hg status --change 1:
$ hg status --change 1
M modified
A added
A copied
R removed
hg status --change 1 unrelated:
$ hg status --change 1 unrelated
hg status -C --change 1 added modified copied removed deleted:
$ hg status -C --change 1 added modified copied removed deleted
M modified
A added
A copied
modified
R removed
hg status -A --change 1 and revset:
$ hg status -A --change '1|1'
M modified
A added
A copied
modified
R removed
C deleted
$ cd ..
hg status with --rev and reverted changes:
$ hg init reverted-changes-repo
$ cd reverted-changes-repo
$ echo a > file
$ hg add file
$ hg ci -m a
$ echo b > file
$ hg ci -m b
reverted file should appear clean
$ hg revert -r 0 .
reverting file
$ hg status -A --rev 0
C file
#if execbit
reverted file with changed flag should appear modified
$ chmod +x file
$ hg status -A --rev 0
M file
$ hg revert -r 0 .
reverting file
reverted and committed file with changed flag should appear modified
$ hg co -C .
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ chmod +x file
$ hg ci -m 'change flag'
$ hg status -A --rev 1 --rev 2
M file
$ hg diff -r 1 -r 2
#endif
$ cd ..
hg status of binary file starting with '\1\n', a separator for metadata:
$ hg init repo5
$ cd repo5
>>> open("010a", r"wb").write(b"\1\nfoo") and None
$ hg ci -q -A -m 'initial checkin'
$ hg status -A
C 010a
>>> open("010a", r"wb").write(b"\1\nbar") and None
$ hg status -A
M 010a
$ hg ci -q -m 'modify 010a'
$ hg status -A --rev 0:1
M 010a
$ touch empty
$ hg ci -q -A -m 'add another file'
$ hg status -A --rev 1:2 010a
C 010a
$ cd ..
test "hg status" with "directory pattern" which matches against files
only known on target revision.
$ hg init repo6
$ cd repo6
$ echo a > a.txt
$ hg add a.txt
$ hg commit -m '#0'
$ mkdir -p 1/2/3/4/5
$ echo b > 1/2/3/4/5/b.txt
$ hg add 1/2/3/4/5/b.txt
$ hg commit -m '#1'
$ hg update -C 0 > /dev/null
$ hg status -A
C a.txt
the directory matching against specified pattern should be removed,
because directory existence prevents 'dirstate.walk()' from showing
warning message about such pattern.
$ test ! -d 1
$ hg status -A --rev 1 1/2/3/4/5/b.txt
R 1/2/3/4/5/b.txt
$ hg status -A --rev 1 1/2/3/4/5
R 1/2/3/4/5/b.txt
$ hg status -A --rev 1 1/2/3
R 1/2/3/4/5/b.txt
$ hg status -A --rev 1 1
R 1/2/3/4/5/b.txt
$ hg status --config ui.formatdebug=True --rev 1 1
status = [
{
'itemtype': 'file',
'path': '1/2/3/4/5/b.txt',
'status': 'R'
},
]
#if windows
$ hg --config ui.slash=false status -A --rev 1 1
R 1\2\3\4\5\b.txt
#endif
$ cd ..
Status after move overwriting a file (issue4458)
=================================================
$ hg init issue4458
$ cd issue4458
$ echo a > a
$ echo b > b
$ hg commit -Am base
adding a
adding b
with --force
$ hg mv b --force a
$ hg st --copies
M a
b
R b
$ hg revert --all
reverting a
undeleting b
$ rm *.orig
without force
$ hg rm a
$ hg st --copies
R a
$ hg mv b a
$ hg st --copies
M a
b
R b
using ui.statuscopies setting
$ hg st --config ui.statuscopies=true
M a
b
R b
$ hg st --config ui.statuscopies=false
M a
R b
$ hg st --config ui.tweakdefaults=yes
M a
b
R b
using log status template (issue5155)
$ hg log -Tstatus -r 'wdir()' -C
changeset: 2147483647:ffffffffffff
parent: 0:8c55c58b4c0e
user: test
date: * (glob)
files:
M a
b
R b
$ hg log -GTstatus -r 'wdir()' -C
o changeset: 2147483647:ffffffffffff
| parent: 0:8c55c58b4c0e
~ user: test
date: * (glob)
files:
M a
b
R b
Other "bug" highlight, the revision status does not report the copy information.
This is buggy behavior.
$ hg commit -m 'blah'
$ hg st --copies --change .
M a
R b
using log status template, the copy information is displayed correctly.
$ hg log -Tstatus -r. -C
changeset: 1:6685fde43d21
tag: tip
user: test
date: * (glob)
summary: blah
files:
M a
b
R b
$ cd ..
Make sure .hg doesn't show up even as a symlink
$ hg init repo0
$ mkdir symlink-repo0
$ cd symlink-repo0
$ ln -s ../repo0/.hg
$ hg status
If the size hasn’t changed but mtime has, status needs to read the contents
of the file to check whether it has changed
$ echo 1 > a
$ echo 1 > b
$ touch -t 200102030000 a b
$ hg commit -Aqm '#0'
$ echo 2 > a
$ touch -t 200102040000 a b
$ hg status
M a
Asking specifically for the status of a deleted/removed file
$ rm a
$ rm b
$ hg status a
! a
$ hg rm a
$ hg rm b
$ hg status a
R a
$ hg commit -qm '#1'
$ hg status a
a: $ENOENT$
Check using include flag with pattern when status does not need to traverse
the working directory (issue6483)
$ cd ..
$ hg init issue6483
$ cd issue6483
$ touch a.py b.rs
$ hg add a.py b.rs
$ hg st -aI "*.py"
A a.py
Also check exclude pattern
$ hg st -aX "*.rs"
A a.py
issue6335
When a directory containing a tracked file gets symlinked, as of 5.8
`hg st` only gives the correct answer about clean (or deleted) files
if also listing unknowns.
The tree-based dirstate and status algorithm fix this:
#if symlink no-dirstate-v1
$ cd ..
$ hg init issue6335
$ cd issue6335
$ mkdir foo
$ touch foo/a
$ hg ci -Ama
adding foo/a
$ mv foo bar
$ ln -s bar foo
$ hg status
! foo/a
? bar/a
? foo
$ hg status -c # incorrect output with `dirstate-v1`
$ hg status -cu
? bar/a
? foo
$ hg status -d # incorrect output with `dirstate-v1`
! foo/a
$ hg status -du
! foo/a
? bar/a
? foo
#endif
Create a repo with files in each possible status
$ cd ..
$ hg init repo7
$ cd repo7
$ mkdir subdir
$ touch clean modified deleted removed
$ touch subdir/clean subdir/modified subdir/deleted subdir/removed
$ echo ignored > .hgignore
$ hg ci -Aqm '#0'
$ echo 1 > modified
$ echo 1 > subdir/modified
$ rm deleted
$ rm subdir/deleted
$ hg rm removed
$ hg rm subdir/removed
$ touch unknown ignored
$ touch subdir/unknown subdir/ignored
Check the output
$ hg status
M modified
M subdir/modified
R removed
R subdir/removed
! deleted
! subdir/deleted
? subdir/unknown
? unknown
$ hg status -mard
M modified
M subdir/modified
R removed
R subdir/removed
! deleted
! subdir/deleted
$ hg status -A
M modified
M subdir/modified
R removed
R subdir/removed
! deleted
! subdir/deleted
? subdir/unknown
? unknown
I ignored
I subdir/ignored
C .hgignore
C clean
C subdir/clean
Note: `hg status some-name` creates a patternmatcher which is not supported
yet by the Rust implementation of status, but includematcher is supported.
--include is used below for that reason
#if unix-permissions
Not having permission to read a directory that contains tracked files makes
status emit a warning then behave as if the directory was empty or removed
entirely:
$ chmod 0 subdir
$ hg status --include subdir
subdir: Permission denied
R subdir/removed
! subdir/clean
! subdir/deleted
! subdir/modified
$ chmod 755 subdir
#endif
Remove a directory that contains tracked files
$ rm -r subdir
$ hg status --include subdir
R subdir/removed
! subdir/clean
! subdir/deleted
! subdir/modified
… and replace it by a file
$ touch subdir
$ hg status --include subdir
R subdir/removed
! subdir/clean
! subdir/deleted
! subdir/modified
? subdir
Replaced a deleted or removed file with a directory
$ mkdir deleted removed
$ touch deleted/1 removed/1
$ hg status --include deleted --include removed
R removed
! deleted
? deleted/1
? removed/1
$ hg add removed/1
$ hg status --include deleted --include removed
A removed/1
R removed
! deleted
? deleted/1
Deeply nested files in an ignored directory are still listed on request
$ echo ignored-dir >> .hgignore
$ mkdir ignored-dir
$ mkdir ignored-dir/subdir
$ touch ignored-dir/subdir/1
$ hg status --ignored
I ignored
I ignored-dir/subdir/1
Check using include flag while listing ignored composes correctly (issue6514)
$ cd ..
$ hg init issue6514
$ cd issue6514
$ mkdir ignored-folder
$ touch A.hs B.hs C.hs ignored-folder/other.txt ignored-folder/ctest.hs
$ cat >.hgignore <<EOF
> A.hs
> B.hs
> ignored-folder/
> EOF
$ hg st -i -I 're:.*\.hs$'
I A.hs
I B.hs
I ignored-folder/ctest.hs
#if dirstate-v2
Check read_dir caching
$ cd ..
$ hg init repo8
$ cd repo8
$ mkdir subdir
$ touch subdir/a subdir/b
$ hg ci -Aqm '#0'
The cached mtime is initially unset
$ hg debugdirstate --all --no-dates | grep '^ '
0 -1 unset subdir
It is still not set when there are unknown files
$ touch subdir/unknown
$ hg status
? subdir/unknown
$ hg debugdirstate --all --no-dates | grep '^ '
0 -1 unset subdir
Now the directory is eligible for caching, so its mtime is save in the dirstate
$ rm subdir/unknown
$ hg status
$ hg debugdirstate --all --no-dates | grep '^ '
0 -1 set subdir
This time the command should be ever so slightly faster since it does not need `read_dir("subdir")`
$ hg status
Creating a new file changes the directory’s mtime, invalidating the cache
$ touch subdir/unknown
$ hg status
? subdir/unknown
$ rm subdir/unknown
$ hg status
Removing a node from the dirstate resets the cache for its parent directory
$ hg forget subdir/a
$ hg debugdirstate --all --no-dates | grep '^ '
0 -1 set subdir
$ hg ci -qm '#1'
$ hg debugdirstate --all --no-dates | grep '^ '
0 -1 unset subdir
$ hg status
? subdir/a
#endif