test-casefolding.t: demonstrate a bug with HFS+ ignoring some codepoints

tests/test-casefolding.t

@@ -1,198 +1,211 b''
 #require icasefs
 
   $ hg debugfs | grep 'case-sensitive:'
   case-sensitive: no
 
 test file addition with bad case
 
   $ hg init repo1
   $ cd repo1
   $ echo a > a
   $ hg add A
   adding a
   $ hg st
   A a
   $ hg ci -m adda
   $ hg manifest
   a
   $ cd ..
 
 test case collision on rename (issue750)
 
   $ hg init repo2
   $ cd repo2
   $ echo a > a
   $ hg --debug ci -Am adda
   adding a
   a
   committed changeset 0:07f4944404050f47db2e5c5071e0e84e7a27bba9
 
 Case-changing renames should work:
 
   $ hg mv a A
   $ hg mv A a
   $ hg st
 
 test changing case of path components
 
   $ mkdir D
   $ echo b > D/b
   $ hg ci -Am addb D/b
   $ hg mv D/b d/b
   D/b: not overwriting - file exists
   $ hg mv D/b d/c
   $ hg st
   A D/c
   R D/b
   $ mv D temp
   $ mv temp d
   $ hg st
   A D/c
   R D/b
   $ hg revert -aq
   $ rm d/c
   $ echo c > D/c
   $ hg add D/c
   $ hg st
   A D/c
   $ hg ci -m addc D/c
   $ hg mv d/b d/e
   moving D/b to D/e (glob)
   $ hg st
   A D/e
   R D/b
   $ hg revert -aq
   $ rm d/e
   $ hg mv d/b D/B
   moving D/b to D/B (glob)
   $ hg st
   A D/B
   R D/b
   $ cd ..
 
 test case collision between revisions (issue912)
 
   $ hg init repo3
   $ cd repo3
   $ echo a > a
   $ hg ci -Am adda
   adding a
   $ hg rm a
   $ hg ci -Am removea
   $ echo A > A
 
 on linux hfs keeps the old case stored, force it
 
   $ mv a aa
   $ mv aa A
   $ hg ci -Am addA
   adding A
 
 used to fail under case insensitive fs
 
   $ hg up -C 0
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ hg up -C
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
 
 no clobbering of untracked files with wrong casing
 
   $ hg up -r null
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ echo gold > a
   $ hg up
   A: untracked file differs
   abort: untracked files in working directory differ from files in requested revision
   [255]
   $ cat a
   gold
   $ rm a
 
 test that normal file in different case on target context is not
 unlinked by largefiles extension.
 
   $ cat >> .hg/hgrc <<EOF
   > [extensions]
   > largefiles=
   > EOF
   $ hg update -q -C 1
   $ hg status -A
   $ echo 'A as largefiles' > A
   $ hg add --large A
   $ hg commit -m '#3'
   created new head
   $ hg manifest -r 3
   .hglf/A
   $ hg manifest -r 0
   a
   $ hg update -q -C 0
   $ hg status -A
   C a
   $ hg update -q -C 3
   $ hg update -q 0
 
   $ cd ..
 
 issue 3342: file in nested directory causes unexpected abort
 
   $ hg init issue3342
   $ cd issue3342
 
   $ mkdir -p a/B/c/D
   $ echo e > a/B/c/D/e
   $ hg add a/B/c/D/e
 
   $ cd ..
 
 issue 3340: mq does not handle case changes correctly
 
 in addition to reported case, 'hg qrefresh' is also tested against
 case changes.
 
   $ echo "[extensions]" >> $HGRCPATH
   $ echo "mq=" >> $HGRCPATH
 
   $ hg init issue3340
   $ cd issue3340
 
   $ echo a > mIxEdCaSe
   $ hg add mIxEdCaSe
   $ hg commit -m '#0'
   $ hg rename mIxEdCaSe tmp
   $ hg rename tmp MiXeDcAsE
   $ hg status -A
   A MiXeDcAsE
     mIxEdCaSe
   R mIxEdCaSe
   $ hg qnew changecase
   $ hg status -A
   C MiXeDcAsE
 
   $ hg qpop -a
   popping changecase
   patch queue now empty
   $ hg qnew refresh-casechange
   $ hg status -A
   C mIxEdCaSe
   $ hg rename mIxEdCaSe tmp
   $ hg rename tmp MiXeDcAsE
   $ hg status -A
   A MiXeDcAsE
     mIxEdCaSe
   R mIxEdCaSe
   $ hg qrefresh
   $ hg status -A
   C MiXeDcAsE
 
   $ hg qpop -a
   popping refresh-casechange
   patch queue now empty
   $ hg qnew refresh-pattern
   $ hg status
   $ echo A > A
   $ hg add
   adding A
   $ hg qrefresh a # issue 3271, qrefresh with file handled case wrong
   $ hg status # empty status means the qrefresh worked
 
+#if osx
+
+We assume anyone running the tests on a case-insensitive volume on OS
+X will be using HFS+. If that's not true, this test will fail.
+
+Bug: some codepoints are to be ignored on HFS+:
+
+  $ rm A
+  >>> open(u'a\u200c'.encode('utf-8'), 'w').write('unicode is fun')
+  $ hg status
+  M A
+  ? a\xe2\x80\x8c (esc)
+#endif
   $ cd ..