httprepo: suppress the `real URL is...' message in safe, common cases.
When the actual and requested URL only differ by trailing slashes,
there is no need to warn. As an example, this easily happens when
accessing repositories on Bitbucket over HTTP(S).
As far as I could tell, there were no existing tests for this
behaviour.
% should fail
abort: path contains illegal component: .hg/00changelog.i
adding a/a
% should fail
abort: path 'b/b' traverses symbolic link 'b'
% should succeed
% should still fail - maybe
abort: path 'b/b' traverses symbolic link 'b'
% unbundle tampered bundle
adding changesets
adding manifests
adding file changes
added 5 changesets with 6 changes to 6 files (+4 heads)
(run 'hg heads' to see heads, 'hg merge' to merge)
% attack .hg/test
.hg/test
abort: path contains illegal component: .hg/test
% attack foo/.hg/test
foo/.hg/test
abort: path 'foo/.hg/test' is inside repo 'foo'
% attack back/test where back symlinks to ..
back
back/test
abort: path 'back/test' traverses symbolic link 'back'
% attack ../test
../test
abort: path contains illegal component: ../test
% attack /tmp/test
/tmp/test
abort: No such file or directory: [HGTMP]/test-audit-path/target//tmp/test