-range=-1 requires the current file to have at least <count> lines, whereas -addr=other doesn't.
-addr=other also sets <count> to -1 by default when it is not specified, though this feature seems undocumented.
Problem:
"set filetype=man" assumes the user wants :Man features, this does extra
stuff like renaming the buffer as "man://".
Solution:
- old entrypoint was ":set filetype=man", but this is too presumptuous #15487
- make the entrypoints more explicit:
1. when the ":Man" command is run
2. when a "man://" buffer is opened
- remove the tricky b:man_sect checks in ftplugin/man.vim and syntax/man.vim
- MANPAGER is supported via ":Man!", as documented.
fixes#15487
Update runtime files.
cb80aa2d53
Omit runtime/doc/tabpage.txt.
Patch v8.2.1401 is not ported yet.
Port optwin.vim changes without gettext().
Patch v8.2.1544 is not ported yet.
Here I use a negative number to decide whether the count has been
explicitly set. I think it unlikely that negative sections will ever be
created given that negative numbers complicate argument handling:
```
$ man -1 foo
man: invalid option -- '1'
```
and given that there's already precedence for alphanumeric sections like
`3p`, `3x`, `n`, etc.
---
This does work, though:
```
$ man -S -3 baz
```
With `man baz.-3` and `man 'baz(-3)'`, (GNU) man *might* consider `-3`
internally as a section, but in the end reports as if the whole
argument was the name of a topic:
```
$ man 'baz(-3)'
No manual entry for baz(-3)
```
---
Closes#13411.
Align matchit.vim with upstream Vim. We don't want to maintain a fork of
matchit.vim; our small changes should be sent to
https://github.com/chrisbra/matchit
mandoc may not handle quoted MANPAGER arguments correctly. E.g. with
export MANPAGER='nvim -u NORC -c "set ft=man"'
mandoc treats `"set` and `ft=man"'` as separate tokens.
To workaround that, provide :Man! so that MANPAGER can avoid quoting.
closes#9120
For back-compat, :CheckHealth runs :checkhealth. But don't define
:CheckHealth explicitly, it adds noise to wildmenu completion.
Completion of healthchecks doesn't yet work with :checkhealth, this is
a regression but it needs to be implemented for :checkhealth rather than
keeping :CheckHealth around.
