subrepo: make "_sanitize()" work
"_sanitize()" was introduced by
224e96078708 on "stable" branch, but
it has done nothing for sanitizing since
224e96078708.
"_sanitize()" assumes "Visitor" design pattern:
"os.walk()" should invoke specified function ("v" in this case)
for each directory elements under specified path
but "os.walk()" assumes "Iterator" design pattern:
callers of it should drive loop to scan each directory elements
under specified path by themselves with the returned generator
object
Because of this mismatching, "_sanitize()" just discards the generator
object returned by "os.walk()" and does nothing for sanitizing.
This patch makes "_sanitize()" work.
This patch also changes the format of warning message to show each
unlinked files, for multiple appearances of "potentially hostile
.hg/hgrc".
http://mercurial.selenic.com/bts/issue619
$ hg init
$ echo a > a
$ hg ci -Ama
adding a
$ echo b > b
$ hg branch b
marked working directory as branch b
(branches are permanent and global, did you want a bookmark?)
$ hg ci -Amb
adding b
$ hg co -C 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
Fast-forward:
$ hg merge b
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg ci -Ammerge
Bogus fast-forward should fail:
$ hg merge b
abort: merging with a working directory ancestor has no effect
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