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fix(tohtml): apply sp color if present #30110

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Problem:
Things like underlines are always given a default foreground highlight
regardless of the value of `sp`.

Solution:
Check for `sp` first, and apply that color to the text decoration color if it
exists.

Limitations:
If there is no value of `sp`, vim applies a text decoration color that matches
the foreground of the text. This is still not implemented (and seems like a much
more complex problem): in TOhtml, the underline will still be given a default
foreground highlight.
This commit is contained in:
Riley Bruins
2024-08-29 09:36:33 -07:00
committed by GitHub
parent 7588ff2d89
commit 59baa5e8a1
2 changed files with 9 additions and 2 deletions
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3
runtime/lua/tohtml.lua
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@@ -1003,6 +1003,7 @@ local function extend_style(out, state)
--TODO(altermo) use local namespace (instead of global 0)
local fg = vim.fn.synIDattr(hlid, 'fg#')
local bg = vim.fn.synIDattr(hlid, 'bg#')
local sp = vim.fn.synIDattr(hlid, 'sp#')
local decor_line = {}
if vim.fn.synIDattr(hlid, 'underline') ~= '' then
table.insert(decor_line, 'underline')
@@ -1020,6 +1021,8 @@ local function extend_style(out, state)
['font-weight'] = vim.fn.synIDattr(hlid, 'bold') ~= '' and 'bold' or nil,
['text-decoration-line'] = not vim.tbl_isempty(decor_line) and table.concat(decor_line, ' ')
or nil,
-- TODO(ribru17): fallback to displayed text color if sp not set
['text-decoration-color'] = sp ~= '' and cterm_to_hex(sp) or nil,
--TODO(altermo) if strikethrough and undercurl then the strikethrough becomes wavy
['text-decoration-style'] = vim.fn.synIDattr(hlid, 'undercurl') ~= '' and 'wavy' or nil,
}