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[ENHANCE]: Error message for plugin. #4441

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[ENHANCE]: Error message for plugin. #4441

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94f6334
(fix): error message for plugin
Typocalypse Aug 22, 2024
ac2c9c8
(refactor): define func only if checks fail
Typocalypse Aug 23, 2024
9b41eff
Merge branch 'main' into typocalypse/fix_plugin_error
Typocalypse Aug 26, 2024
1a777ca
Fully support Python 3.13, including CI testing and wheel building (#…
EwoutH Aug 26, 2024
9d48c4d
(chore): improve branching
Typocalypse Aug 26, 2024
97c7f23
Merge branch 'main' into typocalypse/fix_plugin_error
Typocalypse Aug 26, 2024
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26 changes: 19 additions & 7 deletions plugin/black.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -19,16 +19,28 @@ if exists("g:load_black")
finish
endif

if v:version < 700 || !has('python3')
func! __BLACK_MISSING()
echo "The black.vim plugin requires vim7.0+ with Python 3.6 support."
" check if vim version is too old
if v:version < 700
func! __BlackNotSupported()
echo "The black.vim plugin requires Vim 7.0+"
endfunc
command! Black :call __BLACK_MISSING()
command! BlackUpgrade :call __BLACK_MISSING()
command! BlackVersion :call __BLACK_MISSING()
finish
endif

" check if Vim has Python 3 support
if !has('python3')
func! __BlackNotSupported()
echo "The black.vim plugin requires Vim compiled with Python 3.8+ support."
endfunc
endif
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This will hide the version requirements if python3 support is not available. I think it will be more useful to use:

if v:version < 700
    ...
elseif !has('python3')
    ...
endif

Of course with this if you had very old vim and you get vim 7+ without python3 support you will find about the python3 support on the second try. The current error message avoid this issue by displaying both requirements, but fail to explain what is the actual issue.

We can do something like this:

Vim is too old:

Vim {version} is too old.
The black.vim plugin requires Vim 7.0+ with python3 support.

Python3 is missing:

Python3 support is not available.
The black.vim plugin requires Vim 7.0+ with python3 support.


" Define commands only if __BlackNotSupported is defined
if exists("*__BlackNotSupported")
command! Black :call __BlackNotSupported()
command! BlackUpgrade :call __BlackNotSupported()
command! BlackVersion :call __BlackNotSupported()
endif


let g:load_black = "py1.0"
if !exists("g:black_virtualenv")
if has("nvim")
Expand Down