Merge with default

Only use expensive fctx.cmp when needed Restrict expensive cmp to cases when: - comparing against working directory and - encode filters active or - path is configured for keyword expansion

Merge with stable

filectx: use ctx.size comparisons to speed up ctx.cmp Comparing sizes is cheaper than comparing file contents, as it does not involve reading the file on disk or from the filelog. It is however not always possible: some extensions, or encode filters, change data when extracting it to the working directory. [ original upstream description ]

Merge with stable

Code cleanup - move preselection of expansion candidates for rollback and record into helper function - same overwrite order in rollback and record: 1. modified, 2. added - self.wlock() inside kwrepo class instead of repo.wlock()

enforce subn method via boolean switch There are only 2 patterns to choose, and so far only 1 case where kwtemplater.re_kw.subn is applied on data read from the working directory: when recording added files. With this change the code reflects more closely the boolean character of the switch and underlines the special case.

Fix weeding of expansion candidates when recording Rearrange tests to check this, i.e. that there are changes in other files, not only the recorded one.