Mercurial > hg
view tests/test-template-engine.t @ 18136:f23dea2b296e
copies: do not track backward copies, only renames (issue3739)
The inverse of a rename is a rename, but the inverse of a copy is not a copy.
Presenting it as such -- in particular, stuffing it into the same dict as real
copies -- causes bugs because other code starts believing the inverse copies
are real.
The only test whose output changes is test-mv-cp-st-diff.t. When a backwards
status -C command is run where a copy is involved, the inverse copy (which was
hitherto presented as a real copy) is no longer displayed.
Keeping track of inverse copies is useful in some situations -- composability
of diffs, for example, since adding "a" followed by an inverse copy "b" to "a"
is equivalent to a rename "b" to "a". However, representing them would require
a more complex data structure than the same dict in which real copies are also
stored.
author | Siddharth Agarwal <sid0@fb.com> |
---|---|
date | Wed, 26 Dec 2012 15:04:07 -0800 |
parents | 2917f82f6040 |
children | f580c78ea667 |
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$ cat > engine.py << EOF > > from mercurial import templater > > class mytemplater(object): > def __init__(self, loader, filters, defaults): > self.loader = loader > > def process(self, t, map): > tmpl = self.loader(t) > for k, v in map.iteritems(): > if k in ('templ', 'ctx', 'repo', 'revcache', 'cache'): > continue > if hasattr(v, '__call__'): > v = v(**map) > v = templater.stringify(v) > tmpl = tmpl.replace('{{%s}}' % k, v) > yield tmpl > > templater.engines['my'] = mytemplater > EOF $ hg init test $ echo '[extensions]' > test/.hg/hgrc $ echo "engine = `pwd`/engine.py" >> test/.hg/hgrc $ cd test $ cat > mymap << EOF > changeset = my:changeset.txt > EOF $ cat > changeset.txt << EOF > {{rev}} {{node}} {{author}} > EOF $ hg ci -Ama adding changeset.txt adding mymap $ hg log --style=./mymap 0 97e5f848f0936960273bbf75be6388cd0350a32b test $ cat > changeset.txt << EOF > {{p1rev}} {{p1node}} {{p2rev}} {{p2node}} > EOF $ hg ci -Ama $ hg log --style=./mymap 0 97e5f848f0936960273bbf75be6388cd0350a32b -1 0000000000000000000000000000000000000000 -1 0000000000000000000000000000000000000000 -1 0000000000000000000000000000000000000000 $ cd ..