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@mhinz mhinz commented Dec 10, 2018

Executing :python, and similar commands that rely on eval_call_provider(),
while the accompanying provider it not available, leads to this error message:

E117: Unknown function: provider#python#Call

This doesn't say much to a user. Since we introduced :checkhealth for this
very reason, we now point to it for further diagnosis.

Fixes #3577

@marvim marvim added the RFC label Dec 10, 2018
@mhinz mhinz force-pushed the provider-to-checkhealth branch from 95ce9c9 to 344df2c Compare December 10, 2018 13:51

if (!eval_has_provider(name)) {
EMSG("No provider found. Run \":checkhealth provider\" for more "
"information.");
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"Run foo" is enough, don't need "for more information".

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The message should include the name value, to give more context.

emsgf("No \"%s\" provider found. Run \":checkhealth provider\", name);

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@fmoralesc fmoralesc Dec 10, 2018

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It could be a good idea to print the provider name in the message. Provider for NAME not found. Run :checkhealth provider

@mhinz mhinz force-pushed the provider-to-checkhealth branch from 344df2c to bd69f5b Compare December 10, 2018 14:55
Executing `:python`, and similar commands that rely on `eval_call_provider()`,
while the accompanying provider it not available, leads to this error message:

    E117: Unknown function: provider#python#Call

This doesn't say much to a user. Since we introduced `:checkhealth` for this
very reason, we now point to it for further diagnosis.

Fixes neovim#3577
@mhinz mhinz force-pushed the provider-to-checkhealth branch from bd69f5b to 750c4c9 Compare December 11, 2018 14:12
@justinmk justinmk merged commit 5fee0be into neovim:master Dec 11, 2018
@justinmk justinmk removed the RFC label Dec 11, 2018
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Thanks @mhinz , great to finally see this fixed!

@mhinz mhinz deleted the provider-to-checkhealth branch December 11, 2018 22:49
justinmk added a commit to justinmk/neovim that referenced this pull request Dec 12, 2018
In Vim (and some vestigial parts of Nvim) E319 a placeholder for ex_ni
commands, i.e. commands that are only available in certain builds of
Vim.  That is obviously counter to Nvim's goals: all Nvim commands are
available on all platforms and build types (the remaining ex_ni commands
are actually just missing providers).

However, the runtime provider for a given feature may be missing, and in
that case it makes sense to attach E319 to the error message.

ref neovim#9344
ref neovim#3577
justinmk added a commit to justinmk/neovim that referenced this pull request Dec 12, 2018
In Vim (and some vestigial parts of Nvim) E319 was a placeholder for
ex_ni commands, i.e. commands that are only available in certain builds
of Vim.  That is obviously counter to Nvim's goals: all Nvim commands
are available on all platforms and build types (the remaining ex_ni
commands are actually just missing providers).

We need an error id for "missing provider", so it makes sense to use
E319 for that purpose.

ref neovim#9344
ref neovim#3577
justinmk added a commit to justinmk/neovim that referenced this pull request Dec 30, 2018
Besides the "visible" improvements, this release features numerous
internal improvements to the UI/screen code and test infrastructure.

Numerous patches were merged from Vim, which are not mentioned below.

FEATURES:

07ad5d7 clipboard: Support custom VimL functions neovim#9304
725da1f neovim#9401 win/TUI: Improve terminal/console support
7a8dadb neovim#9077 startup: Use $XDG_CONFIG_DIRS/nvim/sysinit.vim if it exists
feec926 neovim#9299 support <cmd> mapping in more places
0653ed6 neovim#9028 diff/highlight: Show underline for low-priority CursorLine
bddcbbb signs: Add "numhl" argument neovim#9113
05f9c7c clipboard: support Wayland (neovim#9230)
14ae394 neovim#9052 TUI: add support for undercurl and underline color
4fa3492 neovim#9023 man.vim: soft (dynamic) wrap neovim#9023

API:

8b39e4e neovim#6920 API: implement object namespaces
b1aaa0a API: Implement nvim_win_set_buf() neovim#9100
8de87c7 neovim#8180 API: virtual text annotations (nvim_buf_set_virtual_text)
2b9fc9a neovim#8660 API: add nvim_buf_is_loaded()
    API: buf_get_lines, buf_line_count handle unloaded buffers
88f77c2 API: nvim_buf_get_offset_for_line
94841e5 API/UI: neovim#8221 ext_newgrid, ext_hlstate
    (use line-based rather than char-based updates)

UI

b5cfac0 neovim#8806 TUI: use BCE again more often, (smoother resizes/scrolling)
77b5e9a neovim#9315 screen: add missing status redraw when redraw_later(CLEAR) was used
5f15788 TUI: clip invalid regions on resize (neovim#8779), fixes neovim#8774
c936ae0 neovim#9193 TUI: improvements for scrolling and clearing
f204274 neovim#9143 UI: disable clearing almost everywhere
f4b2b66 neovim#9079 TUI: always use safe cursor movement after resize
d36afaf neovim#9211 ui_options: also send when starting or from OptionSet
67f80d4 TUI: Avoid reset_cursor_color in old VTE neovim#9191
e55ebae neovim#9021 don't erase screen on `:hi Normal` during startup
c5790d9 neovim#8915 TUI: Hint wrapped lines to terminals.

FIXES:

231de72 RPC: turn errors from async calls into notifications
907ad92 TUI: Restore terminal title via "title stacking" (neovim#9407)
cb76a8a genappimage: Unset $ARGV0 at invocation neovim#9376
b48efd9 neovim#9347 TUI: FreeBSD: Improve support for BSD vt console
c16529a TUI: Konsole 18.07.70 supports DECSCUSR (neovim#9364)
aec096f os/lang: use the correct LC_NUMERIC also for OS X
5fee0be provider: improve error message (neovim#9344)
3c42d7a TUI: alacritty supports set_cursor_color neovim#9353
7bff9a5 TUI: Alacritty supports DECSCUSR (neovim#9048)
57acfce macOS: infer primary language if $LANG is empty neovim#9345
bc132ae runtime/syntax: Fix highlighting of augroup contents (neovim#9328)
715fdfe neovim#9297 VimL/confirm(): Show dialog even if :silent
799d9c3 clipboard: Prefer xclip (neovim#9302)
6dae777 provider/nodejs: fix npm,yarn detection
16bc1e9 neovim#9218 channel: avoid buffering output when only terminal and no callbacks are active
72fecad neovim#8804 Fix crash in lang_init() on macOS if lang_region = NULL
d581398 ruby: detect rbenv shims for other versions (neovim#8733)
e568ac7 neovim#9123 third-party/unibilium: Fix parsing of extended capability entries
c4c74c3 jobstart(): Fix hang on non-executable cwd neovim#9204
1cf50cb provider/nodejs: Simultaneously query npm and yarn neovim#9054
6c496db undo: Fix infinite loop if undo_read_byte returns EOF neovim#2880
f8f8357 neovim#9034 'swapfile: always show dialog'

CHANGES:

c236e80 neovim#9024 --embed: wait for UI unless --headless
180b50d neovim#9248 python: 'neovim' module was renamed to 'pynvim'
2000b6a neovim#8589 VimL: Remove legacy aliases "v:errmsg", "v:shell_error", "v:this_session"
deb18a0 defaults: background=dark neovim#2894 (neovim#9205)
c1187d4 defaults: win: 'shellpipe' for cmd.exe (neovim#8827)
justinmk added a commit to justinmk/neovim that referenced this pull request Dec 31, 2018
Besides the "visible" improvements, this release features numerous
internal improvements to the UI/screen code and test infrastructure.

Numerous patches were merged from Vim, which are not mentioned below.

FEATURES:

07ad5d7 clipboard: Support custom VimL functions neovim#9304
725da1f neovim#9401 win/TUI: Improve terminal/console support
7a8dadb neovim#9077 startup: Use $XDG_CONFIG_DIRS/nvim/sysinit.vim if it exists
feec926 neovim#9299 support <cmd> mapping in more places
0653ed6 neovim#9028 diff/highlight: Show underline for low-priority CursorLine
bddcbbb signs: Add "numhl" argument neovim#9113
05f9c7c clipboard: support Wayland (neovim#9230)
14ae394 neovim#9052 TUI: add support for undercurl and underline color
4fa3492 neovim#9023 man.vim: soft (dynamic) wrap neovim#9023

API:

8b39e4e neovim#6920 API: implement object namespaces
b1aaa0a API: Implement nvim_win_set_buf() neovim#9100
8de87c7 neovim#8180 API: virtual text annotations (nvim_buf_set_virtual_text)
2b9fc9a neovim#8660 API: add nvim_buf_is_loaded()
    API: buf_get_lines, buf_line_count handle unloaded buffers
88f77c2 API: nvim_buf_get_offset_for_line
94841e5 API/UI: neovim#8221 ext_newgrid, ext_hlstate
    (use line-based rather than char-based updates)

UI

b5cfac0 neovim#8806 TUI: use BCE again more often, (smoother resizes/scrolling)
77b5e9a neovim#9315 screen: add missing status redraw when redraw_later(CLEAR) was used
5f15788 TUI: clip invalid regions on resize (neovim#8779), fixes neovim#8774
c936ae0 neovim#9193 TUI: improvements for scrolling and clearing
f204274 neovim#9143 UI: disable clearing almost everywhere
f4b2b66 neovim#9079 TUI: always use safe cursor movement after resize
d36afaf neovim#9211 ui_options: also send when starting or from OptionSet
67f80d4 TUI: Avoid reset_cursor_color in old VTE neovim#9191
e55ebae neovim#9021 don't erase screen on `:hi Normal` during startup
c5790d9 neovim#8915 TUI: Hint wrapped lines to terminals.

FIXES:

231de72 RPC: turn errors from async calls into notifications
907ad92 TUI: Restore terminal title via "title stacking" (neovim#9407)
cb76a8a genappimage: Unset $ARGV0 at invocation neovim#9376
b48efd9 neovim#9347 TUI: FreeBSD: Improve support for BSD vt console
c16529a TUI: Konsole 18.07.70 supports DECSCUSR (neovim#9364)
aec096f os/lang: use the correct LC_NUMERIC also for OS X
5fee0be provider: improve error message (neovim#9344)
3c42d7a TUI: alacritty supports set_cursor_color neovim#9353
7bff9a5 TUI: Alacritty supports DECSCUSR (neovim#9048)
57acfce macOS: infer primary language if $LANG is empty neovim#9345
bc132ae runtime/syntax: Fix highlighting of augroup contents (neovim#9328)
715fdfe neovim#9297 VimL/confirm(): Show dialog even if :silent
799d9c3 clipboard: Prefer xclip (neovim#9302)
6dae777 provider/nodejs: fix npm,yarn detection
16bc1e9 neovim#9218 channel: avoid buffering output when only terminal and no callbacks are active
72fecad neovim#8804 Fix crash in lang_init() on macOS if lang_region = NULL
d581398 ruby: detect rbenv shims for other versions (neovim#8733)
e568ac7 neovim#9123 third-party/unibilium: Fix parsing of extended capability entries
c4c74c3 jobstart(): Fix hang on non-executable cwd neovim#9204
1cf50cb provider/nodejs: Simultaneously query npm and yarn neovim#9054
6c496db undo: Fix infinite loop if undo_read_byte returns EOF neovim#2880
f8f8357 neovim#9034 'swapfile: always show dialog'

CHANGES:

c236e80 neovim#9024 --embed: wait for UI unless --headless
180b50d neovim#9248 python: 'neovim' module was renamed to 'pynvim'
2000b6a neovim#8589 VimL: Remove legacy aliases "v:errmsg", "v:shell_error", "v:this_session"
deb18a0 defaults: background=dark neovim#2894 (neovim#9205)
c1187d4 defaults: win: 'shellpipe' for cmd.exe (neovim#8827)
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