Allow table boarder characters to be configured

Author: MeanderingProgrammer

Diff for: README.md

@@ -247,7 +247,16 @@ require('render-markdown').setup({
         --  overlay: writes completely over the table, removing conceal behavior and highlights
         --  raw: replaces only the '|' characters in each row, leaving the cells completely unmodified
         cell = 'overlay',
-        -- Highlight for table heading, delimitter, and the line above
+        -- Characters used to replace table boarder
+        -- Correspond to top(3), delimiter(3), bottom(3), vertical, & horizontal
+        -- stylua: ignore
+        boarder = {
+            '┌', '┬', '┐',
+            '├', '┼', '┤',
+            '└', '┴', '┘',
+            '│', '─',
+        },
+        -- Highlight for table heading, delimiter, and the line above
         head = '@markup.heading',
         -- Highlight for everything else, main table rows and the line below
         row = 'Normal',
@@ -425,7 +434,16 @@ require('render-markdown').setup({
         --  overlay: writes completely over the table, removing conceal behavior and highlights
         --  raw: replaces only the '|' characters in each row, leaving the cells completely unmodified
         cell = 'overlay',
-        -- Highlight for table heading, delimitter, and the line above
+        -- Characters used to replace table boarder
+        -- Correspond to top(3), delimiter(3), bottom(3), vertical, & horizontal
+        -- stylua: ignore
+        boarder = {
+            '┌', '┬', '┐',
+            '├', '┼', '┤',
+            '└', '┴', '┘',
+            '│', '─',
+        },
+        -- Highlight for table heading, delimiter, and the line above
         head = '@markup.heading',
         -- Highlight for everything else, main table rows and the line below
         row = 'Normal',

Diff for: doc/render-markdown.txt

@@ -283,7 +283,16 @@ Full Default Configuration ~
             --  overlay: writes completely over the table, removing conceal behavior and highlights
             --  raw: replaces only the '|' characters in each row, leaving the cells completely unmodified
             cell = 'overlay',
-            -- Highlight for table heading, delimitter, and the line above
+            -- Characters used to replace table boarder
+            -- Correspond to top(3), delimiter(3), bottom(3), vertical, & horizontal
+            -- stylua: ignore
+            boarder = {
+                '┌', '┬', '┐',
+                '├', '┼', '┤',
+                '└', '┴', '┘',
+                '│', '─',
+            },
+            -- Highlight for table heading, delimiter, and the line above
             head = '@markup.heading',
             -- Highlight for everything else, main table rows and the line below
             row = 'Normal',
@@ -466,7 +475,16 @@ TABLES                                          *render-markdown-setup-tables*
             --  overlay: writes completely over the table, removing conceal behavior and highlights
             --  raw: replaces only the '|' characters in each row, leaving the cells completely unmodified
             cell = 'overlay',
-            -- Highlight for table heading, delimitter, and the line above
+            -- Characters used to replace table boarder
+            -- Correspond to top(3), delimiter(3), bottom(3), vertical, & horizontal
+            -- stylua: ignore
+            boarder = {
+                '┌', '┬', '┐',
+                '├', '┼', '┤',
+                '└', '┴', '┘',
+                '│', '─',
+            },
+            -- Highlight for table heading, delimiter, and the line above
             head = '@markup.heading',
             -- Highlight for everything else, main table rows and the line below
             row = 'Normal',

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

@@ -40,30 +40,27 @@ M.render_node = function(namespace, buf, capture, node)
         local background = list.clamp(heading.backgrounds, level)
         local foreground = list.clamp(heading.foregrounds, level)
 
-        local heading_text = { str.pad(icon, padding), { foreground, background } }
         vim.api.nvim_buf_set_extmark(buf, namespace, start_row, 0, {
             end_row = end_row + 1,
             end_col = 0,
             hl_group = background,
-            virt_text = { heading_text },
+            virt_text = { { str.pad(icon, padding), { foreground, background } } },
             virt_text_pos = 'overlay',
             hl_eol = true,
         })
     elseif capture == 'dash' then
         local dash = state.config.dash
         local width = vim.api.nvim_win_get_width(util.buf_to_win(buf))
 
-        local dash_text = { dash.icon:rep(width), dash.highlight }
         vim.api.nvim_buf_set_extmark(buf, namespace, start_row, 0, {
-            virt_text = { dash_text },
+            virt_text = { { dash.icon:rep(width), dash.highlight } },
             virt_text_pos = 'overlay',
         })
     elseif capture == 'code' then
         local code = state.config.code
         if not vim.tbl_contains({ 'normal', 'full' }, code.style) then
             return
         end
-
         vim.api.nvim_buf_set_extmark(buf, namespace, start_row, 0, {
             end_row = end_row,
             end_col = 0,
@@ -79,15 +76,12 @@ M.render_node = function(namespace, buf, capture, node)
         if not util.has_10 then
             return
         end
-
         local icon, icon_highlight = icons.get(value)
         if icon == nil or icon_highlight == nil then
             return
         end
-
-        local icon_text = { icon .. ' ' .. value, { icon_highlight, code.highlight } }
         vim.api.nvim_buf_set_extmark(buf, namespace, start_row, start_col, {
-            virt_text = { icon_text },
+            virt_text = { { icon .. ' ' .. value, { icon_highlight, code.highlight } } },
             virt_text_pos = 'inline',
         })
     elseif capture == 'list_marker' then
@@ -107,11 +101,10 @@ M.render_node = function(namespace, buf, capture, node)
             local level = ts.level_in_section(node, 'list')
             local icon = list.cycle(bullet.icons, level)
 
-            local list_marker_text = { str.pad(icon, leading_spaces), bullet.highlight }
             vim.api.nvim_buf_set_extmark(buf, namespace, start_row, start_col, {
                 end_row = end_row,
                 end_col = end_col,
-                virt_text = { list_marker_text },
+                virt_text = { { str.pad(icon, leading_spaces), bullet.highlight } },
                 virt_text_pos = 'overlay',
             })
         end
@@ -130,32 +123,29 @@ M.render_node = function(namespace, buf, capture, node)
                 highlight = callout.highlight
             end
         end
-
-        local quote_marker_text = { value:gsub('>', quote.icon), highlight }
         vim.api.nvim_buf_set_extmark(buf, namespace, start_row, start_col, {
             end_row = end_row,
             end_col = end_col,
-            virt_text = { quote_marker_text },
+            virt_text = { { value:gsub('>', quote.icon), highlight } },
             virt_text_pos = 'overlay',
         })
     elseif vim.tbl_contains({ 'checkbox_unchecked', 'checkbox_checked' }, capture) then
         local checkbox = state.config.checkbox.unchecked
         if capture == 'checkbox_checked' then
             checkbox = state.config.checkbox.checked
         end
-
-        local checkbox_text = { str.pad_to(value, checkbox.icon), checkbox.highlight }
         vim.api.nvim_buf_set_extmark(buf, namespace, start_row, start_col, {
             end_row = end_row,
             end_col = end_col,
-            virt_text = { checkbox_text },
+            virt_text = { { str.pad_to(value, checkbox.icon), checkbox.highlight } },
             virt_text_pos = 'overlay',
         })
     elseif capture == 'table' then
         local pipe_table = state.config.pipe_table
         if pipe_table.style ~= 'full' then
             return
         end
+        local boarder = pipe_table.boarder
 
         ---@param row integer
         ---@param s string
@@ -183,26 +173,27 @@ M.render_node = function(namespace, buf, capture, node)
         if delim_width == start_width and start_width == end_width then
             local headings = vim.split(delim_value, '|', { plain = true, trimempty = true })
             local lengths = vim.tbl_map(function(part)
-                return string.rep('─', vim.fn.strdisplaywidth(part))
+                return boarder[11]:rep(vim.fn.strdisplaywidth(part))
             end, headings)
 
-            local line_above = { { '┌' .. table.concat(lengths, '┬') .. '┐', pipe_table.head } }
+            local line_above = boarder[1] .. table.concat(lengths, boarder[2]) .. boarder[3]
             vim.api.nvim_buf_set_extmark(buf, namespace, start_row, start_col, {
                 virt_lines_above = true,
-                virt_lines = { line_above },
+                virt_lines = { { { line_above, pipe_table.head } } },
             })
 
-            local line_below = { { '└' .. table.concat(lengths, '┴') .. '┘', pipe_table.row } }
+            local line_below = boarder[7] .. table.concat(lengths, boarder[8]) .. boarder[9]
             vim.api.nvim_buf_set_extmark(buf, namespace, end_row, start_col, {
                 virt_lines_above = true,
-                virt_lines = { line_below },
+                virt_lines = { { { line_below, pipe_table.row } } },
             })
         end
     elseif vim.tbl_contains({ 'table_head', 'table_delim', 'table_row' }, capture) then
         local pipe_table = state.config.pipe_table
         if pipe_table.style == 'none' then
             return
         end
+        local boarder = pipe_table.boarder
 
         local highlight = pipe_table.head
         if capture == 'table_row' then
@@ -212,37 +203,32 @@ M.render_node = function(namespace, buf, capture, node)
         if capture == 'table_delim' then
             -- Order matters here, in particular handling inner intersections before left & right
             local row = value
-                :gsub('|', '│')
-                :gsub('-', '─')
-                :gsub(' ', '─')
-                :gsub('─│─', '─┼─')
-                :gsub('│─', '├─')
-                :gsub('─│', '─┤')
+                :gsub(' ', '-')
+                :gsub('%-|%-', boarder[11] .. boarder[5] .. boarder[11])
+                :gsub('|%-', boarder[4] .. boarder[11])
+                :gsub('%-|', boarder[11] .. boarder[6])
+                :gsub('%-', boarder[11])
 
-            local table_delim_text = { row, highlight }
             vim.api.nvim_buf_set_extmark(buf, namespace, start_row, start_col, {
                 end_row = end_row,
                 end_col = end_col,
-                virt_text = { table_delim_text },
+                virt_text = { { row, highlight } },
                 virt_text_pos = 'overlay',
             })
         elseif pipe_table.cell == 'overlay' then
-            local table_row_text = { value:gsub('|', '│'), highlight }
             vim.api.nvim_buf_set_extmark(buf, namespace, start_row, start_col, {
                 end_row = end_row,
                 end_col = end_col,
-                virt_text = { table_row_text },
+                virt_text = { { value:gsub('|', boarder[10]), highlight } },
                 virt_text_pos = 'overlay',
             })
         elseif pipe_table.cell == 'raw' then
             for i = 1, #value do
-                local ch = value:sub(i, i)
-                if ch == '|' then
-                    local table_pipe_text = { '│', highlight }
+                if value:sub(i, i) == '|' then
                     vim.api.nvim_buf_set_extmark(buf, namespace, start_row, i - 1, {
                         end_row = end_row,
                         end_col = i - 1,
-                        virt_text = { table_pipe_text },
+                        virt_text = { { boarder[10], highlight } },
                         virt_text_pos = 'overlay',
                     })
                 end

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

@@ -26,38 +26,33 @@ M.render_node = function(namespace, buf, capture, node)
     logger.debug_node(capture, node, buf)
 
     if capture == 'code' then
-        local code = state.config.code
         vim.api.nvim_buf_set_extmark(buf, namespace, start_row, start_col, {
             end_row = end_row,
             end_col = end_col,
-            hl_group = code.highlight,
+            hl_group = state.config.code.highlight,
         })
     elseif capture == 'callout' then
         local callout = component.callout(value, 'exact')
         if callout ~= nil then
-            local callout_text = { callout.text, callout.highlight }
             vim.api.nvim_buf_set_extmark(buf, namespace, start_row, start_col, {
                 end_row = end_row,
                 end_col = end_col,
-                virt_text = { callout_text },
+                virt_text = { { callout.text, callout.highlight } },
                 virt_text_pos = 'overlay',
             })
         else
             -- Requires inline extmarks
             if not util.has_10 then
                 return
             end
-
             local checkbox = component.checkbox(value, 'exact')
             if checkbox == nil then
                 return
             end
-
-            local checkbox_text = { str.pad_to(value, checkbox.text), checkbox.highlight }
             vim.api.nvim_buf_set_extmark(buf, namespace, start_row, start_col, {
                 end_row = end_row,
                 end_col = end_col,
-                virt_text = { checkbox_text },
+                virt_text = { { str.pad_to(value, checkbox.text), checkbox.highlight } },
                 virt_text_pos = 'inline',
                 conceal = '',
             })

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

@@ -14,6 +14,7 @@ local M = {}
 ---@class render.md.UserPipeTable
 ---@field public style? 'full'|'normal'|'none'
 ---@field public cell? 'overlay'|'raw'
+---@field public boarder? string[]
 ---@field public head? string
 ---@field public row? string
 
@@ -219,7 +220,16 @@ M.default_config = {
         --  overlay: writes completely over the table, removing conceal behavior and highlights
         --  raw: replaces only the '|' characters in each row, leaving the cells completely unmodified
         cell = 'overlay',
-        -- Highlight for table heading, delimitter, and the line above
+        -- Characters used to replace table boarder
+        -- Correspond to top(3), delimiter(3), bottom(3), vertical, & horizontal
+        -- stylua: ignore
+        boarder = {
+            '┌', '┬', '┐',
+            '├', '┼', '┤',
+            '└', '┴', '┘',
+            '│', '─',
+        },
+        -- Highlight for table heading, delimiter, and the line above
         head = '@markup.heading',
         -- Highlight for everything else, main table rows and the line below
         row = 'Normal',

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

@@ -1,6 +1,7 @@
 ---@class render.md.PipeTable
 ---@field public style 'full'|'normal'|'none'
 ---@field public cell 'overlay'|'raw'
+---@field public boarder string[]
 ---@field public head string
 ---@field public row string