Possible to have easy if/else blocks? about vim-colortemplate HOT 11 CLOSED

You don’t do that the way you show it. Colortemplate v2 (currently in beta) provides the Variant keyword;

Variant: gui
# Defs that apply only in GUI or with termguicolors set
Variant: 256 16
# Defs that apply to terminals

See :help colortemplate-variants.

Your specific example aside, I’m not against adding support for conditionals.

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Thanks for answering. But using variants would force me to redefine each group for each variant? I'd stick with the verbatim blocks at that point.

These conditional blocks could also be used to check user options, like filetype specific highlight, contrast, etc.

By the way it's just a readability issue, so not a big problem.

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But using variants would force me to redefine each group for each variant?

No, a Variant directive specifies to which variants (true-color, 256-color, 16-color, and so on) the subsequent definitions apply. So, if you have different colors for FoldColumn only, you can do:

Variant: gui  # Only GUI or termguicolors set
	FoldColumn		skyblue		nightblue
Variant: 256 16  # 256- and 16-color terminals
	FoldColumn		skyblue		none
Variant: gui 256 16  # All three variants
# All the remaining highlight groups

It is a declarative way to define conditional behaviour. Your code would generate something similar to this in v2:

if (has('termguicolors') && &termguicolors) || has('gui_running')
  if &termguicolors || has('gui_running')
    hi FoldColumn guifg=#ffffff guibg=#000000 guisp=NONE gui=NONE cterm=NONE
  else
    hi FoldColumn guifg=#ffffff guibg=NONE guisp=NONE gui=NONE cterm=NONE
  endif
  finish
endif

if s:t_Co >= 256
  if &termguicolors || has('gui_running')
    hi FoldColumn ctermfg=231 ctermbg=16 cterm=NONE
  else
    hi FoldColumn ctermfg=231 ctermbg=NONE cterm=NONE
  endif
endif

Your check is clearly redundant because it is performed automatically by Colortemplate.

These conditional blocks could also be used to check user options, like filetype specific highlight, contrast, etc.

Sure, they may be convenient. I'll work on that.

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The current master now implements (and will soon document) #if, #else, #elseif and #endif. They work like one-line verbatim blocks. The keywords must appear at the beginning of a line. For instance:

#if get(g:, 'transparent_foldcolumn', 0)
	FoldColumn		skyblue		nightblue
#else
	FoldColumn		skyblue		none
#endif

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My WWDC17 color scheme now uses them, if someone needs a real-world example.

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I have also added #let and #unlet, as they're handy. I hope this won't degenerate with people asking me to reimplement the whole of VimScript :>

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Works great, thanks!

I hope this won't degenerate with people asking me to reimplement the whole of VimScript :>

Maybe just #call :)?

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You've got it! Check out the current master.

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Thanks, hoping I'm not being picky, # is used for comments too, maybe & or something else would be better.

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I like # because it reminds me of C macros. Highlighting should make the distinction clear. Could be @ instead.

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For me it's fine also #, thanks.

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