hgweb: fix search {entries} to not return results of template expansion "{entries%changelogentry}" in raw/search.tmpl was utterly wrong because "{entries}" here was a generator yielding results of template expansion. That's why we have a weird hack in runmap(), which I'm going to get rid of. https://www.mercurial-scm.org/repo/hg/file/4.5.2/mercurial/templater.py#l469 We have two choices: a) drop "%changelogentry" from raw/search.tmpl b) fix "{entries}" to yield mappings I take (b) because that's what the other log-like "{entries}" do. The "entries" keyword is wrapped by mappinggenerator so "{entries}" without "%searchentry" still works.

templater: add class representing a nested mappings The mappinggenerator class is necessary to fix hgweb bugs without BC. The mappinglist is for nested formatter items. They are similar, so factored out the base class. The mappinglist could be implemented by using the mappinggenerator, but we'll probably need a direct access to the raw list, so they are implemented as separate classes. Note that tovalue() isn't conforming to the spec yet in that it may return a list of dicts containing unprintable resources. This problem will be fixed later. Tests will be added by subsequent patches.

templater: add function that expands internal literal templates This will be used when rendering nested formatter items with the default template, e.g. fm.nested('parents', tmpl='{rev}:{node|formatnode}', sep=' ') ^^^^^^^^^^^^^^^^^^^^^^^ the default item template

bookmarks: use isrevsymbol() for detecting collision with existing symbol Differential Revision: https://phab.mercurial-scm.org/D3167

debugwhyunstable: add support for revsets Differential Revision: https://phab.mercurial-scm.org/D3166

convert: look up branch only among branches repo[<branch name>] can find something that's not a branch, which is not good. Differential Revision: https://phab.mercurial-scm.org/D3161

convert: remove unused/unnecessary variable "parentctx" Differential Revision: https://phab.mercurial-scm.org/D3160

wireproto: provide accessors for client capabilities For HTTP, this refactors the existing logic, including the parsing of the compression engine capability. For SSH, this adds a ssh-only capability "protocaps" and a command for informing the server on what the client supports. Since SSH is stateful, keep track of the capabilities in the server instance. Differential Revision: https://phab.mercurial-scm.org/D1944

copies: clean up _related logic The limit parameter was never actually used, since the only way the 4th case could be reached was if f1r and f2r converged. The new code makes this clear, and additionally reduces the conditional block to just 3 cases.

context: stop catching RepoLookupError from namespace.singlenode() As pointed out by Yuya, the RepoLookupError was there for catching errors from repo.branchtip(). However, since 885c0290f7d5 (localrepo: add ignoremissing parameter to branchtip, 2014-10-16), that should no longer happen. I think it should now be an error if a namespace raises a RepoLookupError, so we propagate the exception up and and make it easy to fix, rather than trying to interpret the changeid as nodeid prefix and raise a general "unknown revision '...'" error. I also don't think we should catch FilteredLookupError and LookupError from the changelog.rev() call, for the same reason as above: If a namespace returns a node that doesn't exist, we should provide a more helpful exception than "unknown revision '...'". Differential Revision: https://phab.mercurial-scm.org/D3145

histedit: simplify desthistedit Instead of sorting the revset and take the first one, take the minimum revision. Differential Revision: https://phab.mercurial-scm.org/D3137

stack: follow-up on the stack revset Follow good-practice for defining the stack revset. Differential Revision: https://phab.mercurial-scm.org/D3136

githelp: use revsymbol() for looking up symbol I don't know if we should be using revsingle() here, so I was conservative and switched to revsymbol(). Differential Revision: https://phab.mercurial-scm.org/D3156

hgweb: use revsymbol() to determine if query is a revision repo.__getitem__ is about to get dumber. Differential Revision: https://phab.mercurial-scm.org/D3155

context: make repo[<filtered binary nodeid>] match node If you pass in a binary nodeid of a filtered node to repo.__getitem__, it would run through this code: try: self._node = changeid self._rev = repo.changelog.rev(changeid) return except error.FilteredLookupError: raise except LookupError: pass However, repo.changelog.rev() would raise a FilteredLookupError, not FilteredRepoLookupError. Instead, we would hit the "except LookupError" and continue, trying to interpret the nodeid as a bookmark etc. The end result would be an error like this: abort: unknown revision 'ddadbd7c40ef8b8ad6d0d01a7a842092fc431798'! After this patch, it would instead be: abort: 00changelog.i@ddadbd7c40ef8b8ad6d0d01a7a842092fc431798: filtered node! This only happens when we get a binary nodeid, which means it's not string directly from the user, so it would be a programming error if it happened. It's therefore a little hard to test (I checked test-context.py, but it doesn't use obsmarkers). It looks like this has been wrong ever since dc25ed84bee8 (changectx: issue a FilteredRepoLookupError when applicable, 2014-10-15). Differential Revision: https://phab.mercurial-scm.org/D3144

context: move handling of filtering error to revsymbol() (API) When changectx's constructor runs into various Filtered*Error, it creates an exception with a hint about using --hidden. This only makes sense when the revision was provided by the user (if we get e.g. a FilteredLookupError from repo[p1], then it's instead a programming error). Thus, I'm moving the handling into revsymbol(). Also changed "unfilteredrepo[changeid]" to "revsymbol(unfilteredrepo, changeid)" as part of the move. Differential Revision: https://phab.mercurial-scm.org/D3143

py3: whitelist 13 new passing tests Some tests were passing before the series too. Differential Revision: https://phab.mercurial-scm.org/D3133

py3: convert user value to bytes by b'' prefix This makes test-journal* pass on Python 3.5. # skip-blame beacuse just b'' prefix Differential Revision: https://phab.mercurial-scm.org/D3125

util: whitelist apfs for hardlink support Seems to work fine for me. Differential Revision: https://phab.mercurial-scm.org/D3134

mq: avoid a silly conversion from binary nodeid to hex We generally deal with binary nodeids in code. In this case the hex nodeid was passed to strip.checksubstate() where it was passed to repo.__getitem__, which of course accepts a binary nodeid. Differential Revision: https://phab.mercurial-scm.org/D3141

narrow: remove unused "cacheprop" stuff This is unused since D3046. I didn't even notice it then, but tests still pass so I hope it's still handled safely. Differential Revision: https://phab.mercurial-scm.org/D3142

tests: disable infinitepush tests for simple store Infinitepush relies heavily on bundles and bundlerepo. As such, it won't be easy to make compatible with alternate storage backends at this time. Let's disable the tests when running with our simple store. Differential Revision: https://phab.mercurial-scm.org/D3062

rebase: remove unnecessary and incorrect handling of nullid We used to write a nullid as hex to the rebase state file and interpret it as the "todo" state (value -1). However, when reading it, we compared the string value to (binary) nullid, which would of course not match. AFAICT, it still worked because when the read nodeid did not match nullid (which, again, it didn't), we'd use the normal path which did repo[<hex nullid>].rev(), and that also happens to return -1. It seems to have been this way ever since 9972758ab4c5 (rebase: handle revtodo as a special value when storing/restoring state, 2014-12-02). Differential Revision: https://phab.mercurial-scm.org/D3140

rebase: convert "oldrev" to revnum earlier It was done in 3 places before, now just 1. Differential Revision: https://phab.mercurial-scm.org/D3139

rebase: make "destnode" consistently a revnum and rename it to "destrev" Differential Revision: https://phab.mercurial-scm.org/D3138

bookmarks: drop always-None argument from calculateupdate() Thanks to Yuya for noticing. Differential Revision: https://phab.mercurial-scm.org/D3135

narrow: move manifestlog overrides to core With this and the previous patch, I couldn't measure any significant difference from `hg files -r .` in a FireFox repo with 65k files. I tried with both a flat-manifest and a tree-manifest version of it. Neither had the narrow extension enabled. Differential Revision: https://phab.mercurial-scm.org/D3046

narrow: move manifestrevlog overrides to core Differential Revision: https://phab.mercurial-scm.org/D3045