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language_md: some more improvements 

* handle images with links
* handle escaping of * and `
* support coloring a heading custom id
* reverted from regex to lua patterns
This commit is contained in:
jgmdev 2022-03-13 04:55:41 -04:00
parent c4f7380a95
commit 2ce4dbc8ef
1 changed files with 36 additions and 29 deletions
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65
data/plugins/language_md.lua
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@ -120,46 +120,45 @@ syntax.add {
{ pattern = { "```liquid", "```" }, type = "string", syntax = ".liquid" },
{ pattern = { "```", "```" }, type = "string" },
{ pattern = { "``", "``" }, type = "string" },
{ pattern = { "`", "`" }, type = "string" },
{ pattern = { "%f[\\`]%`[%S]", "`" }, type = "string" },
-- strike
{ pattern = { "~~", "~~" }, type = "keyword2" },
-- highlight
{ pattern = { "==", "==" }, type = "literal" },
-- lines
{ regex = "^\\-{2,}\\-$", type = "comment" },
{ regex = "^\\*{2,}\\*$", type = "comment" },
{ regex = "^\\_{2,}_$", type = "comment" },
{ pattern = "^%-%-%-+\n", type = "comment" },
{ pattern = "^%*%*%*+\n", type = "comment" },
{ pattern = "^___+\n", type = "comment" },
-- bullets
{ regex = "^\\s*\\*\\s", type = "number" },
{ regex = "^\\s*-\\s", type = "number" },
{ regex = "^\\s*\\+\\s", type = "number" },
{ pattern = "^%s*%*%s", type = "number" },
{ pattern = "^%s*%-%s", type = "number" },
{ pattern = "^%s*%+%s", type = "number" },
-- numbered bullet
{ regex = "^\\s*[0-9]+\\.\\s", type = "number" },
{ pattern = "^%s*[0-9]+%.%s", type = "number" },
-- blockquote
{ regex = "^\\s*>{1,}\\s", type = "string" },
{ pattern = "^%s*>+%s", type = "string" },
-- bold and italic
{ pattern = { "%*%*%*", "%*%*%*" }, type = "markdown_bold_italic" },
{ pattern = { "%*%*", "%*%*" }, type = "markdown_bold" },
{ pattern = { "%*%*%*%S", "%*%*%*" }, type = "markdown_bold_italic" },
{ pattern = { "%*%*%S", "%*%*" }, type = "markdown_bold" },
-- handle edge case where asterisk can be at end of line and not close
{ pattern = { "%*[%S]", "%*" }, type = "markdown_italic" },
-- alternative bold italic formats
{
regex = "^_{3}[\\s[:punct:]A-Za-z0-9]+_{3}\\s" ,
type = "markdown_bold_italic"
},
{
regex = "^_{2}[\\s[:punct:]A-Za-z0-9]+_{2}\\s" ,
type = "markdown_bold"
},
{
regex = "^_{1}[\\s[:punct:]A-Za-z0-9]+_{1}\\s" ,
pattern = { "%f[\\%*]%*[%S]", "%*%f[^%*]" },
type = "markdown_italic"
},
-- alternative bold italic formats
{ pattern = "^___[%s%p%w]+___%s" , type = "markdown_bold_italic" },
{ pattern = "^__[%s%p%w]+__%s" , type = "markdown_bold" },
{ pattern = "^_[%s%p%w]+_%s" , type = "markdown_italic" },
{ pattern = { "%s___", "___%f[%s]" }, type = "markdown_bold_italic" },
{ pattern = { "%s__", "__%f[%s]" }, type = "markdown_bold" },
{ pattern = { "%s_[%S]", "_%f[%s]" }, type = "markdown_italic" },
-- heading with custom id
{
pattern = "^#+%s[%w%s%p]+(){()#[%w%-]+()}",
type = { "keyword", "function", "string", "function" }
},
-- headings
{ regex = "^#{1,6}.+", type = "keyword" },
{ pattern = "^#+%s.+\n", type = "keyword" },
-- superscript and subscript
{
pattern = "%^()%d+()%^",
@ -170,13 +169,17 @@ syntax.add {
type = { "function", "number", "function" }
},
-- definitions
{ regex = "^:\\s.+", type = "function" },
{ pattern = "^:%s.+", type = "function" },
-- emoji
{ pattern = ":[a-zA-Z0-9_%-]+:", type = "literal" },
-- images and links
-- images and link
{
pattern = "!?%[()["..in_squares_match.."]+()%]()%(()["..in_parenthesis_match.."]+()%)",
type = { "function", "string", "function", "function", "number", "function" }
pattern = "!?%[!?%[()["..in_squares_match.."]+()%]%(()["..in_parenthesis_match.."]+()%)%]%(()["..in_parenthesis_match.."]+()%)",
type = { "function", "string", "function", "number", "function", "number", "function" }
},
{
pattern = "!?%[!?%[?()["..in_squares_match.."]+()%]?%]%(()["..in_parenthesis_match.."]+()%)",
type = { "function", "string", "function", "number", "function" }
},
-- reference links
{
@ -184,11 +187,15 @@ syntax.add {
type = { "function", "string", "function", "function", "number", "function" }
},
{
pattern = "%[%^?()["..in_squares_match.."]+()%]: ",
pattern = "^%s*%[%^()["..in_squares_match.."]+()%]: ",
type = { "function", "number", "function" }
},
{
pattern = "%[%^?()["..in_squares_match.."]+()%]",
pattern = "^%s*%[%^?()["..in_squares_match.."]+()%]:%s+.+\n",
type = { "function", "number", "function" }
},
{
pattern = "!?%[%^?()["..in_squares_match.."]+()%]",
type = { "function", "number", "function" }
},
-- url's and email