hg-cpython: fallback when encountering an unknown matcher
At this point in the process, nothing user-visible has happened, it is still
safe to fallback. This can happen now that we're going to be using
"container matchers" like unionmatcher and intersectionmatcher.
This is easier and less error-prone than recursive checking beforehand since
only the presence of a transformation case will allow the process to continue.
#require symlink
$ echo "[extensions]" >> $HGRCPATH
$ echo "mq=" >> $HGRCPATH
$ hg init
$ hg qinit
$ hg qnew base.patch
$ echo aaa > a
$ echo bbb > b
$ echo ccc > c
$ hg add a b c
$ hg qrefresh
$ readlink.py a
a -> a not a symlink
test replacing a file with a symlink
$ hg qnew symlink.patch
$ rm a
$ ln -s b a
$ hg qrefresh --git
$ readlink.py a
a -> b
$ hg qpop
popping symlink.patch
now at: base.patch
$ hg qpush
applying symlink.patch
now at: symlink.patch
$ readlink.py a
a -> b
test updating a symlink
$ rm a
$ ln -s c a
$ hg qnew --git -f updatelink
$ readlink.py a
a -> c
$ hg qpop
popping updatelink
now at: symlink.patch
$ hg qpush --debug
applying updatelink
patching file a
committing files:
a
committing manifest
committing changelog
updating the branch cache
now at: updatelink
$ readlink.py a
a -> c
$ hg st
test replacing a symlink with a file
$ ln -s c s
$ hg add s
$ hg qnew --git -f addlink
$ rm s
$ echo sss > s
$ hg qnew --git -f replacelinkwithfile
$ hg qpop
popping replacelinkwithfile
now at: addlink
$ hg qpush
applying replacelinkwithfile
now at: replacelinkwithfile
$ cat s
sss
$ hg st
test symlink removal
$ hg qnew removesl.patch
$ hg rm a
$ hg qrefresh --git
$ hg qpop
popping removesl.patch
now at: replacelinkwithfile
$ hg qpush
applying removesl.patch
now at: removesl.patch
$ hg st -c
C b
C c
C s
replace broken symlink with another broken symlink
$ ln -s linka linka
$ hg add linka
$ hg qnew link
$ hg mv linka linkb
$ rm linkb
$ ln -s linkb linkb
$ hg qnew movelink
$ hg qpop
popping movelink
now at: link
$ hg qpush
applying movelink
now at: movelink
$ readlink.py linkb
linkb -> linkb