purge: abort with missing files avoiding problems with name-mangling fs
In a name mangling filesystem (e.g. a case insensitive one)
dirstate.walk() can yield filenames different from the ones
stored in the dirstate. This already confuses the status and
add commands, but with purge this may cause data loss.
To prevent this purge refuses to work if there are missing
files and has a 'force' option if the user knows it is safe.
Even with the force option purge checks if any of the missing
files is still available in the working dir: if so there
may be some problem with the underlying filesystem, so it
unconditionally aborts.
#!/bin/sh
hg init t
cd t
# we need a repo with some legacy latin-1 changesets
hg unbundle $TESTDIR/legacy-encoding.hg
hg co
python << EOF
f = file('latin-1', 'w'); f.write("latin-1 e' encoded: \xe9"); f.close()
f = file('utf-8', 'w'); f.write("utf-8 e' encoded: \xc3\xa9"); f.close()
f = file('latin-1-tag', 'w'); f.write("\xe9"); f.close()
EOF
echo % should fail with encoding error
echo "plain old ascii" > a
hg st
HGENCODING=ascii hg ci -l latin-1 -d "1000000 0"
echo % these should work
echo "latin-1" > a
HGENCODING=latin-1 hg ci -l latin-1 -d "1000000 0"
echo "utf-8" > a
HGENCODING=utf-8 hg ci -l utf-8 -d "1000000 0"
HGENCODING=latin-1 hg tag -d "1000000 0" `cat latin-1-tag`
HGENCODING=latin-1 hg branch `cat latin-1-tag`
HGENCODING=latin-1 hg ci -d "1000000 0" -m 'latin1 branch'
rm .hg/branch
echo % ascii
hg --encoding ascii log
echo % latin-1
hg --encoding latin-1 log
echo % utf-8
hg --encoding utf-8 log
echo % ascii
HGENCODING=ascii hg tags
echo % latin-1
HGENCODING=latin-1 hg tags
echo % utf-8
HGENCODING=utf-8 hg tags
echo % ascii
HGENCODING=ascii hg branches
echo % latin-1
HGENCODING=latin-1 hg branches
echo % utf-8
HGENCODING=utf-8 hg branches
echo '[ui]' >> .hg/hgrc
echo 'fallbackencoding = koi8-r' >> .hg/hgrc
echo % utf-8
HGENCODING=utf-8 hg log
HGENCODING=dolphin hg log
HGENCODING=ascii hg branch `cat latin-1-tag`
cp latin-1-tag .hg/branch
HGENCODING=latin-1 hg ci -d "1000000 0" -m 'should fail'
exit 0