Mercurial > hg
view tests/test-walk.t @ 46607:e9901d01d135
revlog: add a mechanism to verify expected file position before appending
If someone uses `hg debuglocks`, or some non-hg process writes to the .hg
directory without respecting the locks, or if the repo's on a networked
filesystem, it's possible for the revlog code to write out corrupted data.
The form of this corruption can vary depending on what data was written and how
that happened. We are in the "networked filesystem" case (though I've had users
also do this to themselves with the "`hg debuglocks`" scenario), and most often
see this with the changelog. What ends up happening is we produce two items
(let's call them rev1 and rev2) in the .i file that have the same linkrev,
baserev, and offset into the .d file, while the data in the .d file is appended
properly. rev2's compressed_size is accurate for rev2, but when we go to
decompress the data in the .d file, we use the offset that's recorded in the
index file, which is the same as rev1, and attempt to decompress
rev2.compressed_size bytes of rev1's data. This usually does not succeed. :)
When using inline data, this also fails, though I haven't investigated why too
closely. This shows up as a "patch decode" error. I believe what's happening
there is that we're basically ignoring the offset field, getting the data
properly, but since baserev != rev, it thinks this is a delta based on rev
(instead of a full text) and can't actually apply it as such.
For now, I'm going to make this an optional component and default it to entirely
off. I may increase the default severity of this in the future, once I've
enabled it for my users and we gain more experience with it. Luckily, most of my
users have a versioned filesystem and can roll back to before the corruption has
been written, it's just a hassle to do so and not everyone knows how (so it's a
support burden). Users on other filesystems will not have that luxury, and this
can cause them to have a corrupted repository that they are unlikely to know how
to resolve, and they'll see this as a data-loss event. Refusing to create the
corruption is a much better user experience.
This mechanism is not perfect. There may be false-negatives (racy writes that
are not detected). There should not be any false-positives (non-racy writes that
are detected as such). This is not a mechanism that makes putting a repo on a
networked filesystem "safe" or "supported", just *less* likely to cause
corruption.
Differential Revision: https://phab.mercurial-scm.org/D9952
author | Kyle Lippincott <spectral@google.com> |
---|---|
date | Wed, 03 Feb 2021 16:33:10 -0800 |
parents | 72890d8f9860 |
children | 35f1ecd84bd0 |
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$ hg init t $ cd t $ mkdir -p beans $ for b in kidney navy turtle borlotti black pinto; do > echo $b > beans/$b > done $ mkdir -p mammals/Procyonidae $ for m in cacomistle coatimundi raccoon; do > echo $m > mammals/Procyonidae/$m > done $ echo skunk > mammals/skunk $ echo fennel > fennel $ echo fenugreek > fenugreek $ echo fiddlehead > fiddlehead $ hg addremove adding beans/black adding beans/borlotti adding beans/kidney adding beans/navy adding beans/pinto adding beans/turtle adding fennel adding fenugreek adding fiddlehead adding mammals/Procyonidae/cacomistle adding mammals/Procyonidae/coatimundi adding mammals/Procyonidae/raccoon adding mammals/skunk $ hg commit -m "commit #0" $ hg debugwalk -v * matcher: <alwaysmatcher> f beans/black beans/black f beans/borlotti beans/borlotti f beans/kidney beans/kidney f beans/navy beans/navy f beans/pinto beans/pinto f beans/turtle beans/turtle f fennel fennel f fenugreek fenugreek f fiddlehead fiddlehead f mammals/Procyonidae/cacomistle mammals/Procyonidae/cacomistle f mammals/Procyonidae/coatimundi mammals/Procyonidae/coatimundi f mammals/Procyonidae/raccoon mammals/Procyonidae/raccoon f mammals/skunk mammals/skunk $ hg debugwalk -v -I. * matcher: <includematcher includes=''> f beans/black beans/black f beans/borlotti beans/borlotti f beans/kidney beans/kidney f beans/navy beans/navy f beans/pinto beans/pinto f beans/turtle beans/turtle f fennel fennel f fenugreek fenugreek f fiddlehead fiddlehead f mammals/Procyonidae/cacomistle mammals/Procyonidae/cacomistle f mammals/Procyonidae/coatimundi mammals/Procyonidae/coatimundi f mammals/Procyonidae/raccoon mammals/Procyonidae/raccoon f mammals/skunk mammals/skunk $ cd mammals $ hg debugwalk -v * matcher: <alwaysmatcher> f beans/black ../beans/black f beans/borlotti ../beans/borlotti f beans/kidney ../beans/kidney f beans/navy ../beans/navy f beans/pinto ../beans/pinto f beans/turtle ../beans/turtle f fennel ../fennel f fenugreek ../fenugreek f fiddlehead ../fiddlehead f mammals/Procyonidae/cacomistle Procyonidae/cacomistle f mammals/Procyonidae/coatimundi Procyonidae/coatimundi f mammals/Procyonidae/raccoon Procyonidae/raccoon f mammals/skunk skunk $ hg debugwalk -v -X ../beans * matcher: <differencematcher m1=<alwaysmatcher>, m2=<includematcher includes='beans(?:/|$)'>> f fennel ../fennel f fenugreek ../fenugreek f fiddlehead ../fiddlehead f mammals/Procyonidae/cacomistle Procyonidae/cacomistle f mammals/Procyonidae/coatimundi Procyonidae/coatimundi f mammals/Procyonidae/raccoon Procyonidae/raccoon f mammals/skunk skunk $ hg debugwalk -v -I '*k' * matcher: <includematcher includes='mammals/[^/]*k(?:/|$)'> f mammals/skunk skunk $ hg debugwalk -v -I 'glob:*k' * matcher: <includematcher includes='mammals/[^/]*k(?:/|$)'> f mammals/skunk skunk $ hg debugwalk -v -I 'relglob:*k' * matcher: <includematcher includes='.*k(?:/|$)'> f beans/black ../beans/black f fenugreek ../fenugreek f mammals/skunk skunk $ hg debugwalk -v -I 'relglob:*k' . * matcher: <intersectionmatcher m1=<patternmatcher patterns='mammals(?:/|$)'>, m2=<includematcher includes='.*k(?:/|$)'>> f mammals/skunk skunk $ hg debugwalk -v -I 're:.*k$' * matcher: <includematcher includes='.*k$'> f beans/black ../beans/black f fenugreek ../fenugreek f mammals/skunk skunk $ hg debugwalk -v -I 'relre:.*k$' * matcher: <includematcher includes='.*.*k$'> f beans/black ../beans/black f fenugreek ../fenugreek f mammals/skunk skunk $ hg debugwalk -v -I 'path:beans' * matcher: <includematcher includes='beans(?:/|$)'> f beans/black ../beans/black f beans/borlotti ../beans/borlotti f beans/kidney ../beans/kidney f beans/navy ../beans/navy f beans/pinto ../beans/pinto f beans/turtle ../beans/turtle $ hg debugwalk -v -I 'relpath:detour/../../beans' * matcher: <includematcher includes='beans(?:/|$)'> f beans/black ../beans/black f beans/borlotti ../beans/borlotti f beans/kidney ../beans/kidney f beans/navy ../beans/navy f beans/pinto ../beans/pinto f beans/turtle ../beans/turtle $ hg debugwalk -v 'rootfilesin:' * matcher: <patternmatcher patterns="rootfilesin: ['.']"> f fennel ../fennel f fenugreek ../fenugreek f fiddlehead ../fiddlehead $ hg debugwalk -v -I 'rootfilesin:' * matcher: <includematcher includes="rootfilesin: ['.']"> f fennel ../fennel f fenugreek ../fenugreek f fiddlehead ../fiddlehead $ hg debugwalk -v 'rootfilesin:.' * matcher: <patternmatcher patterns="rootfilesin: ['.']"> f fennel ../fennel f fenugreek ../fenugreek f fiddlehead ../fiddlehead $ hg debugwalk -v -I 'rootfilesin:.' * matcher: <includematcher includes="rootfilesin: ['.']"> f fennel ../fennel f fenugreek ../fenugreek f fiddlehead ../fiddlehead $ hg debugwalk -v -X 'rootfilesin:' * matcher: <differencematcher m1=<alwaysmatcher>, m2=<includematcher includes="rootfilesin: ['.']">> f beans/black ../beans/black f beans/borlotti ../beans/borlotti f beans/kidney ../beans/kidney f beans/navy ../beans/navy f beans/pinto ../beans/pinto f beans/turtle ../beans/turtle f mammals/Procyonidae/cacomistle Procyonidae/cacomistle f mammals/Procyonidae/coatimundi Procyonidae/coatimundi f mammals/Procyonidae/raccoon Procyonidae/raccoon f mammals/skunk skunk $ hg debugwalk -v 'rootfilesin:fennel' * matcher: <patternmatcher patterns="rootfilesin: ['fennel']"> $ hg debugwalk -v -I 'rootfilesin:fennel' * matcher: <includematcher includes="rootfilesin: ['fennel']"> $ hg debugwalk -v 'rootfilesin:skunk' * matcher: <patternmatcher patterns="rootfilesin: ['skunk']"> $ hg debugwalk -v -I 'rootfilesin:skunk' * matcher: <includematcher includes="rootfilesin: ['skunk']"> $ hg debugwalk -v 'rootfilesin:beans' * matcher: <patternmatcher patterns="rootfilesin: ['beans']"> f beans/black ../beans/black f beans/borlotti ../beans/borlotti f beans/kidney ../beans/kidney f beans/navy ../beans/navy f beans/pinto ../beans/pinto f beans/turtle ../beans/turtle $ hg debugwalk -v -I 'rootfilesin:beans' * matcher: <includematcher includes="rootfilesin: ['beans']"> f beans/black ../beans/black f beans/borlotti ../beans/borlotti f beans/kidney ../beans/kidney f beans/navy ../beans/navy f beans/pinto ../beans/pinto f beans/turtle ../beans/turtle $ hg debugwalk -v 'rootfilesin:mammals' * matcher: <patternmatcher patterns="rootfilesin: ['mammals']"> f mammals/skunk skunk $ hg debugwalk -v -I 'rootfilesin:mammals' * matcher: <includematcher includes="rootfilesin: ['mammals']"> f mammals/skunk skunk $ hg debugwalk -v 'rootfilesin:mammals/' * matcher: <patternmatcher patterns="rootfilesin: ['mammals']"> f mammals/skunk skunk $ hg debugwalk -v -I 'rootfilesin:mammals/' * matcher: <includematcher includes="rootfilesin: ['mammals']"> f mammals/skunk skunk $ hg debugwalk -v -X 'rootfilesin:mammals' * matcher: <differencematcher m1=<alwaysmatcher>, m2=<includematcher includes="rootfilesin: ['mammals']">> f beans/black ../beans/black f beans/borlotti ../beans/borlotti f beans/kidney ../beans/kidney f beans/navy ../beans/navy f beans/pinto ../beans/pinto f beans/turtle ../beans/turtle f fennel ../fennel f fenugreek ../fenugreek f fiddlehead ../fiddlehead f mammals/Procyonidae/cacomistle Procyonidae/cacomistle f mammals/Procyonidae/coatimundi Procyonidae/coatimundi f mammals/Procyonidae/raccoon Procyonidae/raccoon $ hg debugwalk -v . * matcher: <patternmatcher patterns='mammals(?:/|$)'> f mammals/Procyonidae/cacomistle Procyonidae/cacomistle f mammals/Procyonidae/coatimundi Procyonidae/coatimundi f mammals/Procyonidae/raccoon Procyonidae/raccoon f mammals/skunk skunk $ hg debugwalk -v -I. * matcher: <includematcher includes='mammals(?:/|$)'> f mammals/Procyonidae/cacomistle Procyonidae/cacomistle f mammals/Procyonidae/coatimundi Procyonidae/coatimundi f mammals/Procyonidae/raccoon Procyonidae/raccoon f mammals/skunk skunk $ hg debugwalk -v Procyonidae * matcher: <patternmatcher patterns='mammals/Procyonidae(?:/|$)'> f mammals/Procyonidae/cacomistle Procyonidae/cacomistle f mammals/Procyonidae/coatimundi Procyonidae/coatimundi f mammals/Procyonidae/raccoon Procyonidae/raccoon $ cd Procyonidae $ hg debugwalk -v . * matcher: <patternmatcher patterns='mammals/Procyonidae(?:/|$)'> f mammals/Procyonidae/cacomistle cacomistle f mammals/Procyonidae/coatimundi coatimundi f mammals/Procyonidae/raccoon raccoon $ hg debugwalk -v .. * matcher: <patternmatcher patterns='mammals(?:/|$)'> f mammals/Procyonidae/cacomistle cacomistle f mammals/Procyonidae/coatimundi coatimundi f mammals/Procyonidae/raccoon raccoon f mammals/skunk ../skunk $ cd .. $ hg debugwalk -v ../beans * matcher: <patternmatcher patterns='beans(?:/|$)'> f beans/black ../beans/black f beans/borlotti ../beans/borlotti f beans/kidney ../beans/kidney f beans/navy ../beans/navy f beans/pinto ../beans/pinto f beans/turtle ../beans/turtle $ hg debugwalk -v . * matcher: <patternmatcher patterns='mammals(?:/|$)'> f mammals/Procyonidae/cacomistle Procyonidae/cacomistle f mammals/Procyonidae/coatimundi Procyonidae/coatimundi f mammals/Procyonidae/raccoon Procyonidae/raccoon f mammals/skunk skunk $ hg debugwalk -v .hg abort: path 'mammals/.hg' is inside nested repo 'mammals' [255] $ hg debugwalk -v ../.hg abort: path contains illegal component: .hg [255] $ cd .. $ hg debugwalk -v -Ibeans * matcher: <includematcher includes='beans(?:/|$)'> f beans/black beans/black f beans/borlotti beans/borlotti f beans/kidney beans/kidney f beans/navy beans/navy f beans/pinto beans/pinto f beans/turtle beans/turtle $ hg debugwalk -v -I '{*,{b,m}*/*}k' * matcher: <includematcher includes='(?:[^/]*|(?:b|m)[^/]*/[^/]*)k(?:/|$)'> f beans/black beans/black f fenugreek fenugreek f mammals/skunk mammals/skunk $ hg debugwalk -v -Ibeans mammals * matcher: <intersectionmatcher m1=<patternmatcher patterns='mammals(?:/|$)'>, m2=<includematcher includes='beans(?:/|$)'>> $ hg debugwalk -v -Inon-existent * matcher: <includematcher includes='non\\-existent(?:/|$)'> $ hg debugwalk -v -Inon-existent -Ibeans/black * matcher: <includematcher includes='non\\-existent(?:/|$)|beans/black(?:/|$)'> f beans/black beans/black $ hg debugwalk -v -Ibeans beans/black * matcher: <intersectionmatcher m1=<patternmatcher patterns='beans/black(?:/|$)'>, m2=<includematcher includes='beans(?:/|$)'>> f beans/black beans/black exact $ hg debugwalk -v -Ibeans/black beans * matcher: <intersectionmatcher m1=<patternmatcher patterns='beans(?:/|$)'>, m2=<includematcher includes='beans/black(?:/|$)'>> f beans/black beans/black $ hg debugwalk -v -Xbeans/black beans * matcher: <differencematcher m1=<patternmatcher patterns='beans(?:/|$)'>, m2=<includematcher includes='beans/black(?:/|$)'>> f beans/borlotti beans/borlotti f beans/kidney beans/kidney f beans/navy beans/navy f beans/pinto beans/pinto f beans/turtle beans/turtle $ hg debugwalk -v -Xbeans/black -Ibeans * matcher: <differencematcher m1=<includematcher includes='beans(?:/|$)'>, m2=<includematcher includes='beans/black(?:/|$)'>> f beans/borlotti beans/borlotti f beans/kidney beans/kidney f beans/navy beans/navy f beans/pinto beans/pinto f beans/turtle beans/turtle $ hg debugwalk -v -Xbeans/black beans/black * matcher: <differencematcher m1=<patternmatcher patterns='beans/black(?:/|$)'>, m2=<includematcher includes='beans/black(?:/|$)'>> $ hg debugwalk -v -Xbeans/black -Ibeans/black * matcher: <differencematcher m1=<includematcher includes='beans/black(?:/|$)'>, m2=<includematcher includes='beans/black(?:/|$)'>> $ hg debugwalk -v -Xbeans beans/black * matcher: <differencematcher m1=<patternmatcher patterns='beans/black(?:/|$)'>, m2=<includematcher includes='beans(?:/|$)'>> $ hg debugwalk -v -Xbeans -Ibeans/black * matcher: <differencematcher m1=<includematcher includes='beans/black(?:/|$)'>, m2=<includematcher includes='beans(?:/|$)'>> $ hg debugwalk -v 'glob:mammals/../beans/b*' * matcher: <patternmatcher patterns='beans/b[^/]*$'> f beans/black beans/black f beans/borlotti beans/borlotti $ hg debugwalk -v '-X*/Procyonidae' mammals * matcher: <differencematcher m1=<patternmatcher patterns='mammals(?:/|$)'>, m2=<includematcher includes='[^/]*/Procyonidae(?:/|$)'>> f mammals/skunk mammals/skunk $ hg debugwalk -v path:mammals * matcher: <patternmatcher patterns='mammals(?:/|$)'> f mammals/Procyonidae/cacomistle mammals/Procyonidae/cacomistle f mammals/Procyonidae/coatimundi mammals/Procyonidae/coatimundi f mammals/Procyonidae/raccoon mammals/Procyonidae/raccoon f mammals/skunk mammals/skunk $ hg debugwalk -v .. abort: .. not under root '$TESTTMP/t' [255] $ hg debugwalk -v beans/../.. abort: beans/../.. not under root '$TESTTMP/t' [255] $ hg debugwalk -v .hg abort: path contains illegal component: .hg [255] $ hg debugwalk -v beans/../.hg abort: path contains illegal component: .hg [255] $ hg debugwalk -v beans/../.hg/data abort: path contains illegal component: .hg/data [255] $ hg debugwalk -v beans/.hg abort: path 'beans/.hg' is inside nested repo 'beans' [255] Test explicit paths and excludes: $ hg debugwalk -v fennel -X fennel * matcher: <differencematcher m1=<patternmatcher patterns='fennel(?:/|$)'>, m2=<includematcher includes='fennel(?:/|$)'>> $ hg debugwalk -v fennel -X 'f*' * matcher: <differencematcher m1=<patternmatcher patterns='fennel(?:/|$)'>, m2=<includematcher includes='f[^/]*(?:/|$)'>> $ hg debugwalk -v beans/black -X 'path:beans' * matcher: <differencematcher m1=<patternmatcher patterns='beans/black(?:/|$)'>, m2=<includematcher includes='beans(?:/|$)'>> $ hg debugwalk -v -I 'path:beans/black' -X 'path:beans' * matcher: <differencematcher m1=<includematcher includes='beans/black(?:/|$)'>, m2=<includematcher includes='beans(?:/|$)'>> Test absolute paths: $ hg debugwalk -v `pwd`/beans * matcher: <patternmatcher patterns='beans(?:/|$)'> f beans/black beans/black f beans/borlotti beans/borlotti f beans/kidney beans/kidney f beans/navy beans/navy f beans/pinto beans/pinto f beans/turtle beans/turtle $ hg debugwalk -v `pwd`/.. abort: $TESTTMP/t/.. not under root '$TESTTMP/t' [255] Test patterns: $ hg debugwalk -v glob:\* * matcher: <patternmatcher patterns='[^/]*$'> f fennel fennel f fenugreek fenugreek f fiddlehead fiddlehead #if eol-in-paths $ echo glob:glob > glob:glob $ hg addremove adding glob:glob warning: filename contains ':', which is reserved on Windows: 'glob:glob' $ hg debugwalk -v glob:\* * matcher: <patternmatcher patterns='[^/]*$'> f fennel fennel f fenugreek fenugreek f fiddlehead fiddlehead f glob:glob glob:glob $ hg debugwalk -v glob:glob * matcher: <patternmatcher patterns='glob$'> glob: $ENOENT$ $ hg debugwalk -v glob:glob:glob * matcher: <patternmatcher patterns='glob:glob$'> f glob:glob glob:glob exact $ hg debugwalk -v path:glob:glob * matcher: <patternmatcher patterns='glob:glob(?:/|$)'> f glob:glob glob:glob exact $ rm glob:glob $ hg addremove removing glob:glob #endif $ hg debugwalk -v 'glob:**e' * matcher: <patternmatcher patterns='.*e$'> f beans/turtle beans/turtle f mammals/Procyonidae/cacomistle mammals/Procyonidae/cacomistle $ hg debugwalk -v 're:.*[kb]$' * matcher: <patternmatcher patterns='.*[kb]$'> f beans/black beans/black f fenugreek fenugreek f mammals/skunk mammals/skunk $ hg debugwalk -v path:beans/black * matcher: <patternmatcher patterns='beans/black(?:/|$)'> f beans/black beans/black exact $ hg debugwalk -v path:beans//black * matcher: <patternmatcher patterns='beans/black(?:/|$)'> f beans/black beans/black exact $ hg debugwalk -v relglob:Procyonidae * matcher: <patternmatcher patterns='(?:|.*/)Procyonidae$'> $ hg debugwalk -v 'relglob:Procyonidae/**' * matcher: <patternmatcher patterns='(?:|.*/)Procyonidae/.*$'> f mammals/Procyonidae/cacomistle mammals/Procyonidae/cacomistle f mammals/Procyonidae/coatimundi mammals/Procyonidae/coatimundi f mammals/Procyonidae/raccoon mammals/Procyonidae/raccoon $ hg debugwalk -v 'relglob:Procyonidae/**' fennel * matcher: <patternmatcher patterns='(?:|.*/)Procyonidae/.*$|fennel(?:/|$)'> f fennel fennel exact f mammals/Procyonidae/cacomistle mammals/Procyonidae/cacomistle f mammals/Procyonidae/coatimundi mammals/Procyonidae/coatimundi f mammals/Procyonidae/raccoon mammals/Procyonidae/raccoon $ hg debugwalk -v beans 'glob:beans/*' * matcher: <patternmatcher patterns='beans(?:/|$)|beans/[^/]*$'> f beans/black beans/black f beans/borlotti beans/borlotti f beans/kidney beans/kidney f beans/navy beans/navy f beans/pinto beans/pinto f beans/turtle beans/turtle $ hg debugwalk -v 'glob:mamm**' * matcher: <patternmatcher patterns='mamm.*$'> f mammals/Procyonidae/cacomistle mammals/Procyonidae/cacomistle f mammals/Procyonidae/coatimundi mammals/Procyonidae/coatimundi f mammals/Procyonidae/raccoon mammals/Procyonidae/raccoon f mammals/skunk mammals/skunk $ hg debugwalk -v 'glob:mamm**' fennel * matcher: <patternmatcher patterns='mamm.*$|fennel(?:/|$)'> f fennel fennel exact f mammals/Procyonidae/cacomistle mammals/Procyonidae/cacomistle f mammals/Procyonidae/coatimundi mammals/Procyonidae/coatimundi f mammals/Procyonidae/raccoon mammals/Procyonidae/raccoon f mammals/skunk mammals/skunk $ hg debugwalk -v 'glob:j*' * matcher: <patternmatcher patterns='j[^/]*$'> $ hg debugwalk -v NOEXIST * matcher: <patternmatcher patterns='NOEXIST(?:/|$)'> NOEXIST: * (glob) #if fifo $ mkfifo fifo $ hg debugwalk -v fifo * matcher: <patternmatcher patterns='fifo(?:/|$)'> fifo: unsupported file type (type is fifo) #endif $ rm fenugreek $ hg debugwalk -v fenugreek * matcher: <patternmatcher patterns='fenugreek(?:/|$)'> f fenugreek fenugreek exact $ hg rm fenugreek $ hg debugwalk -v fenugreek * matcher: <patternmatcher patterns='fenugreek(?:/|$)'> f fenugreek fenugreek exact $ touch new $ hg debugwalk -v new * matcher: <patternmatcher patterns='new(?:/|$)'> f new new exact $ mkdir ignored $ touch ignored/file $ echo '^ignored$' > .hgignore $ hg debugwalk -v ignored * matcher: <patternmatcher patterns='ignored(?:/|$)'> $ hg debugwalk -v ignored/file * matcher: <patternmatcher patterns='ignored/file(?:/|$)'> f ignored/file ignored/file exact Test listfile and listfile0 $ "$PYTHON" -c "open('listfile0', 'wb').write(b'fenugreek\0new\0')" $ hg debugwalk -v -I 'listfile0:listfile0' * matcher: <includematcher includes='fenugreek(?:/|$)|new(?:/|$)'> f fenugreek fenugreek f new new $ "$PYTHON" -c "open('listfile', 'wb').write(b'fenugreek\nnew\r\nmammals/skunk\n')" $ hg debugwalk -v -I 'listfile:listfile' * matcher: <includematcher includes='fenugreek(?:/|$)|new(?:/|$)|mammals/skunk(?:/|$)'> f fenugreek fenugreek f mammals/skunk mammals/skunk f new new $ cd .. $ hg debugwalk -v -R t t/mammals/skunk * matcher: <patternmatcher patterns='mammals/skunk(?:/|$)'> f mammals/skunk t/mammals/skunk exact $ mkdir t2 $ cd t2 $ hg debugwalk -v -R ../t ../t/mammals/skunk * matcher: <patternmatcher patterns='mammals/skunk(?:/|$)'> f mammals/skunk ../t/mammals/skunk exact $ hg debugwalk -v --cwd ../t mammals/skunk * matcher: <patternmatcher patterns='mammals/skunk(?:/|$)'> f mammals/skunk mammals/skunk exact $ cd .. Test split patterns on overflow $ cd t $ echo fennel > overflow.list $ cat >> printnum.py <<EOF > from __future__ import print_function > for i in range(20000 // 100): > print('x' * 100) > EOF $ "$PYTHON" printnum.py >> overflow.list $ echo fenugreek >> overflow.list $ hg debugwalk 'listfile:overflow.list' 2>&1 | egrep -v '^xxx' f fennel fennel exact f fenugreek fenugreek exact $ cd ..