util: improve handling of truncated compressed streams If the compressed stream is over as marked by the reader providing nothing new and the compression engine is not providing data, bail out. This can happen in practise when the server misbehaves and would result in an infinite loop otherwise. Differential Revision: https://phab.mercurial-scm.org/D4297

zsh_completion: update all options It's just too hard to further split this patch. What it does: - adds missing flags - removes flags that are no longer there - updates flag descriptions and argument names - adds * where using the same option many times is okay - groups with () mutually exclusive flags that can't be used together - adds + and = to options that need arguments - removes + and = from options that don't take any arguments - fixes minor issues and a typo Differential Revision: https://phab.mercurial-scm.org/D4267

zsh_completion: run hg with HGPLAINEXCEPT=alias to list commands This is what contrib/bash_completion does, looks like a sensible thing to do. Differential Revision: https://phab.mercurial-scm.org/D4266

zsh_completion: remove completion for obsolete graphlog extension Differential Revision: https://phab.mercurial-scm.org/D4265

zsh_completion: declare appropriate local parameters for ->string form When ->string form is used for _arguments, the function that calls it must declare appropriate local parameters. Managing local return value is needed to tell the completion system if our function succeeded in suggesting something or not, plus without that `hg diff -<TAB>` doesn't look right. While at it, fix a copypaste error (s/diff_files/revert_files/). Docs: http://zsh.sourceforge.net/Doc/Release/Completion-System.html Differential Revision: https://phab.mercurial-scm.org/D4264

zsh_completion: complete files from `hg st -mar` for commit and diff Useful to have and is consistent with our bash completion file. This is also an improvement coming from upstream, downstream or sidestream (depends on how you look at it) hg completion file -- the one that lives in zsh's own repo. Differential Revision: https://phab.mercurial-scm.org/D4263

zsh_completion: drop -w, add -S to _arguments From the docs: http://zsh.sourceforge.net/Doc/Release/Completion-System.html _arguments -w: "allow option stacking even if one or more of the options take arguments", so something like "-xy xarg yarg". Mercurial's command line parser doesn't support that, so the flag got removed in zsh 92584634d3d3 and bf8b61182043. _arguments -S: "do not complete options after a ‘--’ appearing on the line". By options it means things like "-x" and "--foo", but it will still complete arguments like files. Differential Revision: https://phab.mercurial-scm.org/D4262