hgweb: show as same parents as "hg parents -r REV FILE" in pages for file Before this patch, "parents" in pages for file doesn't show as same parents as "hg parents -r REV FILE", when the specified file is not modified in the specified revision. For example, it is assumed that revision A, B and D change file "f". changelog (A) ---> (B) ---> (C) ---> (D) filelog "f" (x) ---> (y) ------------> (z) "/file/D/f" invokes "webutil.parents()" with filectx(z) gotten from changectx(D), and it returns changectx(B). This is as same result as "hg parents -r D f". In the other hand, "/file/C/f" invokes "webutil.parents()" with filectx(y') gotten from changectx(C), and it returns changectx(A), because filectx(y') is linked to changectx(B), and works like filectx(y) in some cases. In this case, revision B is hidden from users browsing file "f" in revision C. This patch shows as same parents as "hg parents -r REV FILE" in pages for file, by making "webutil.parents()" return: - "linkrev()"-ed revision only, if: - specified context instance is "filectx" (because "webutil.parents()" is invoked with changectx, too), and - (1) the revision from which filectx is gotten and (2) the one to which filectx is linked are different from each other - revision gotten from "ctx.parents()", otherwise