update: fix crash on bare update when directaccess is enabled 'rev' may be None. An empty 'rev' string shouldn't also be passed to unhidehashlikerevs().

templater: make sure expression is terminated by '}' This can't be ensured by the tokenize() generator since the parser stop consuming tokens once it reached an end of an operation. Spotted by Matt Harbison.

bookmark: deprecate direct update of a bookmark value This changeset was part of an older series preventing direct update of the bookmarks store without the change being tracked by a transaction. For some unclear reason, this was not sent to the list. So we are sending it now. Initial series: 3325c7dcabaa+08bf0ebc6c8e+712a85b3677f. We want to channel all bookmarks update through 'applychanges' so let's remove more way to work around this function.

debugdeltachain: display how many chunks would be read in sparse-read mode

bdiff: handle the possibility of an integer overflow when allocating Differential Revision: https://phab.mercurial-scm.org/D1877

svnsubrepo: check if subrepo is missing when checking dirty state (issue5657) During an hg convert command, subrepos are not checked out. However, a manifestmerge may occur during an hg convert if there is a merge commit, which in particular will check the dirty state of subrepos. Before this change, the lack of a checked out subrepo would error out. This check for svn subrepos is modelled after 2fdea636f254 for git subrepos.

win32text: use 'tiprev' when appropriate This is cleaner than the current 'len(repo) - 1' form.

patchbomb: use 'tiprev' when appropriate This is cleaner than the current 'len(repo) - 1' form.

revset: use 'tiprev' when appropriate This is cleaner than the current 'len(repo) - 1' forms

changelog: use 'tiprev()' in 'tip()' Since 'tip()' is just a node version of 'tiprev()' we should reuse the code.