Add language code style

# Details

Requested: #52

Adds ability to overlay language icon / name above code blocks
without the touching the background.

Author: MeanderingProgrammer

Diff for: README.md

@@ -183,7 +183,8 @@ require('render-markdown').setup({
         -- Determines how code blocks are rendered:
         --  none: disables all rendering
         --  normal: adds highlight group to the code block
-        --  full: normal + language icon & name above the code block
+        --  language: adds language icon & name above the code block
+        --  full: normal + language
         style = 'full',
         -- Highlight for code blocks
         highlight = 'ColorColumn',
@@ -325,7 +326,8 @@ require('render-markdown').setup({
         -- Determines how code blocks are rendered:
         --  none: disables all rendering
         --  normal: adds highlight group to the code block
-        --  full: normal + language icon & name above the code block
+        --  language: adds language icon & name above the code block
+        --  full: normal + language
         style = 'full',
         -- Highlight for code blocks
         highlight = 'ColorColumn',

Diff for: doc/render-markdown.txt

@@ -219,7 +219,8 @@ Full Default Configuration ~
             -- Determines how code blocks are rendered:
             --  none: disables all rendering
             --  normal: adds highlight group to the code block
-            --  full: normal + language icon & name above the code block
+            --  language: adds language icon & name above the code block
+            --  full: normal + language
             style = 'full',
             -- Highlight for code blocks
             highlight = 'ColorColumn',
@@ -361,7 +362,8 @@ CODE BLOCKS                                *render-markdown-setup-code-blocks*
             -- Determines how code blocks are rendered:
             --  none: disables all rendering
             --  normal: adds highlight group to the code block
-            --  full: normal + language icon & name above the code block
+            --  language: adds language icon & name above the code block
+            --  full: normal + language
             style = 'full',
             -- Highlight for code blocks
             highlight = 'ColorColumn',

Diff for: lua/render-markdown/handler/markdown.lua

@@ -60,7 +60,7 @@ M.render_node = function(namespace, buf, capture, node)
         })
     elseif capture == 'code' then
         local code = state.config.code
-        if code.style == 'none' then
+        if not vim.tbl_contains({ 'normal', 'full' }, code.style) then
             return
         end
 
@@ -72,7 +72,7 @@ M.render_node = function(namespace, buf, capture, node)
         })
     elseif capture == 'language' then
         local code = state.config.code
-        if code.style ~= 'full' then
+        if not vim.tbl_contains({ 'language', 'full' }, code.style) then
             return
         end
         -- Requires inline extmarks

Diff for: lua/render-markdown/health.lua

@@ -153,7 +153,7 @@ function M.check_config(config)
 
     local code = config.code
     append_errors('code', {
-        style = one_of(code.style, { 'full', 'normal', 'none' }),
+        style = one_of(code.style, { 'full', 'language', 'normal', 'none' }),
         highlight = { code.highlight, 'string' },
     })
 

Diff for: lua/render-markdown/init.lua

@@ -36,7 +36,7 @@ local M = {}
 ---@field public highlight? string
 
 ---@class render.md.UserCode
----@field public style? 'full'|'normal'|'none'
+---@field public style? 'full'|'normal'|'language'|'none'
 ---@field public highlight? string
 
 ---@class render.md.UserHeading
@@ -155,7 +155,8 @@ M.default_config = {
         -- Determines how code blocks are rendered:
         --  none: disables all rendering
         --  normal: adds highlight group to the code block
-        --  full: normal + language icon & name above the code block
+        --  language: adds language icon & name above the code block
+        --  full: normal + language
         style = 'full',
         -- Highlight for code blocks
         highlight = 'ColorColumn',

Diff for: lua/render-markdown/types.lua

@@ -23,7 +23,7 @@
 ---@field public highlight string
 
 ---@class render.md.Code
----@field public style 'full'|'normal'|'none'
+---@field public style 'full'|'normal'|'language'|'none'
 ---@field public highlight string
 
 ---@class render.md.Heading