Mercurial > hg
view tests/test-demandimport.py @ 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 | c0290fc6b486 |
children | 54af51c18c4c |
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from mercurial import demandimport demandimport.enable() import re rsub = re.sub def f(obj): l = repr(obj) l = rsub("0x[0-9a-fA-F]+", "0x?", l) l = rsub("from '.*'", "from '?'", l) l = rsub("'<[a-z]*>'", "'<whatever>'", l) return l import os print "os =", f(os) print "os.system =", f(os.system) print "os =", f(os) from mercurial import util print "util =", f(util) print "util.system =", f(util.system) print "util =", f(util) print "util.system =", f(util.system) import re as fred print "fred =", f(fred) import sys as re print "re =", f(re) print "fred =", f(fred) print "fred.sub =", f(fred.sub) print "fred =", f(fred) print "re =", f(re) print "re.stderr =", f(re.stderr) print "re =", f(re)