refactor(runtime): rewrite 'vim' color scheme in Lua

Problem: Bundled 'vim' color scheme is written in Vimscript which
  implicitly assumes that the file is ported from Vim.
  This is not the case, at it is currently the Neovim's way of providing
  backward compatibility for color schemes.

Solution: Rewrite it in Lua to indicate that this runtime file comes
  from Neovim.

1 files changed, 286 insertions, 0 deletions

diff --git a/runtime/colors/vim.lua b/runtime/colors/vim.lua
new file mode 100644
index 0000000000..4e16b6e036
--- /dev/null
+++ b/runtime/colors/vim.lua
@@ -0,0 +1,286 @@
+-- Name:         vim
+-- Description:  Vim's default color scheme
+-- Author:       Bram Moolenaar <Bram@vim.org>
+-- Maintainer:   The Vim Project <https://github.com/vim/vim>
+-- Website:      https://github.com/vim/vim
+-- License:      Same as Vim
+-- Last Updated: 2023 Aug 10
+
+-- This is Vim's default color scheme. It doesn't define the Normal
+-- highlighting, it uses whatever the colors used to be.
+
+vim.cmd.highlight('clear')
+vim.g.colors_name = 'vim'
+
+local hi = function(name, val)
+  -- Force links
+  val.force = true
+
+  -- Make sure that `cterm` attribute is not populated from `gui`
+  val.cterm = val.cterm or {}
+
+  -- Define global highlight
+  vim.api.nvim_set_hl(0, name, val)
+end
+
+--stylua: ignore start
+-- General
+hi('Normal', {})
+
+hi('Conceal',      { fg = 'LightGrey', bg = 'DarkGrey', ctermfg = 'LightGrey', ctermbg = 'DarkGrey' })
+hi('Cursor',       {})
+hi('lCursor',      {})
+hi('DiffText',     { bg = 'Red', bold = true,           ctermbg = 'Red', cterm = { bold = true } })
+hi('ErrorMsg',     { fg = 'White', bg = 'Red',          ctermfg = 'White', ctermbg = 'DarkRed' })
+hi('IncSearch',    { reverse = true,                    cterm = { reverse = true } })
+hi('ModeMsg',      { bold = true,                       cterm = { bold = true } })
+hi('NonText',      { fg = 'Blue', bold = true,          ctermfg = 'Blue' })
+hi('PmenuSbar',    { bg = 'Grey',                       ctermbg = 'Grey' })
+hi('StatusLine',   { reverse = true, bold = true,       cterm = { reverse = true, bold = true }})
+hi('StatusLineNC', { reverse = true,                    cterm = { reverse = true } })
+hi('TabLineFill',  { reverse = true,                    cterm = { reverse = true } })
+hi('TabLineSel',   { bold = true,                       cterm = { bold = true } })
+hi('TermCursor',   { reverse = true,                    cterm = { reverse = true } })
+hi('WinBar',       { bold = true,                       cterm = { bold = true } })
+hi('WildMenu',     { fg = 'Black', bg = 'Yellow',       ctermfg = 'Black', ctermbg = 'Yellow' })
+
+hi('VertSplit',      { link = 'Normal' })
+hi('WinSeparator',   { link = 'VertSplit' })
+hi('WinBarNC',       { link = 'WinBar' })
+hi('EndOfBuffer',    { link = 'NonText' })
+hi('LineNrAbove',    { link = 'LineNr' })
+hi('LineNrBelow',    { link = 'LineNr' })
+hi('QuickFixLine',   { link = 'Search' })
+hi('CursorLineSign', { link = 'SignColumn' })
+hi('CursorLineFold', { link = 'FoldColumn' })
+hi('CurSearch',      { link = 'Search' })
+hi('PmenuKind',      { link = 'Pmenu' })
+hi('PmenuKindSel',   { link = 'PmenuSel' })
+hi('PmenuExtra',     { link = 'Pmenu' })
+hi('PmenuExtraSel',  { link = 'PmenuSel' })
+hi('Substitute',     { link = 'Search' })
+hi('Whitespace',     { link = 'NonText' })
+hi('MsgSeparator',   { link = 'StatusLine' })
+hi('NormalFloat',    { link = 'Pmenu' })
+hi('FloatBorder',    { link = 'WinSeparator' })
+hi('FloatTitle',     { link = 'Title' })
+hi('FloatFooter',    { link = 'Title' })
+
+hi('FloatShadow',          { bg = 'Black', blend=80 })
+hi('FloatShadowThrough',   { bg = 'Black', blend=100 })
+hi('RedrawDebugNormal',    { reverse = true,             cterm = { reverse = true } })
+hi('RedrawDebugClear',     { bg = 'Yellow',              ctermbg = 'Yellow' })
+hi('RedrawDebugComposed',  { bg = 'Green',               ctermbg = 'Green' })
+hi('RedrawDebugRecompose', { bg = 'Red',                 ctermbg = 'Red' })
+hi('Error',                { fg = 'White', bg = 'Red',   ctermfg = 'White', ctermbg = 'Red' })
+hi('Todo',                 { fg = 'Blue', bg = 'Yellow', ctermfg = 'Black', ctermbg = 'Yellow' })
+
+hi('String',         { link = 'Constant' })
+hi('Character',      { link = 'Constant' })
+hi('Number',         { link = 'Constant' })
+hi('Boolean',        { link = 'Constant' })
+hi('Float',          { link = 'Number' })
+hi('Function',       { link = 'Identifier' })
+hi('Conditional',    { link = 'Statement' })
+hi('Repeat',         { link = 'Statement' })
+hi('Label',          { link = 'Statement' })
+hi('Operator',       { link = 'Statement' })
+hi('Keyword',        { link = 'Statement' })
+hi('Exception',      { link = 'Statement' })
+hi('Include',        { link = 'PreProc' })
+hi('Define',         { link = 'PreProc' })
+hi('Macro',          { link = 'PreProc' })
+hi('PreCondit',      { link = 'PreProc' })
+hi('StorageClass',   { link = 'Type' })
+hi('Structure',      { link = 'Type' })
+hi('Typedef',        { link = 'Type' })
+hi('Tag',            { link = 'Special' })
+hi('SpecialChar',    { link = 'Special' })
+hi('Delimiter',      { link = 'Special' })
+hi('SpecialComment', { link = 'Special' })
+hi('Debug',          { link = 'Special' })
+
+hi('DiagnosticError',            { fg = 'Red',                          ctermfg = 1 })
+hi('DiagnosticWarn',             { fg = 'Orange',                       ctermfg = 3 })
+hi('DiagnosticInfo',             { fg = 'LightBlue',                    ctermfg = 4 })
+hi('DiagnosticHint',             { fg = 'LightGrey',                    ctermfg = 7 })
+hi('DiagnosticOk',               { fg = 'LightGreen',                   ctermfg = 10 })
+hi('DiagnosticUnderlineError',   { sp = 'Red', underline = true,        cterm = { underline = true } })
+hi('DiagnosticUnderlineWarn',    { sp = 'Orange', underline = true,     cterm = { underline = true } })
+hi('DiagnosticUnderlineInfo',    { sp = 'LightBlue', underline = true,  cterm = { underline = true } })
+hi('DiagnosticUnderlineHint',    { sp = 'LightGrey', underline = true,  cterm = { underline = true } })
+hi('DiagnosticUnderlineOk',      { sp = 'LightGreen', underline = true, cterm = { underline = true } })
+hi('DiagnosticVirtualTextError', { link = 'DiagnosticError' })
+hi('DiagnosticVirtualTextWarn',  { link = 'DiagnosticWarn' })
+hi('DiagnosticVirtualTextInfo',  { link = 'DiagnosticInfo' })
+hi('DiagnosticVirtualTextHint',  { link = 'DiagnosticHint' })
+hi('DiagnosticVirtualTextOk',    { link = 'DiagnosticOk' })
+hi('DiagnosticFloatingError',    { link = 'DiagnosticError' })
+hi('DiagnosticFloatingWarn',     { link = 'DiagnosticWarn' })
+hi('DiagnosticFloatingInfo',     { link = 'DiagnosticInfo' })
+hi('DiagnosticFloatingHint',     { link = 'DiagnosticHint' })
+hi('DiagnosticFloatingOk',       { link = 'DiagnosticOk' })
+hi('DiagnosticSignError',        { link = 'DiagnosticError' })
+hi('DiagnosticSignWarn',         { link = 'DiagnosticWarn' })
+hi('DiagnosticSignInfo',         { link = 'DiagnosticInfo' })
+hi('DiagnosticSignHint',         { link = 'DiagnosticHint' })
+hi('DiagnosticSignOk',           { link = 'DiagnosticOk' })
+hi('DiagnosticDeprecated',       { sp = 'Red', strikethrough = true,    cterm = { strikethrough = true } })
+
+hi('DiagnosticUnnecessary', { link = 'Comment' })
+hi('LspInlayHint',          { link = 'NonText' })
+hi('SnippetTabstop',        { link = 'Visual' })
+
+-- Text
+hi('@text.literal',   { link = 'Comment' })
+hi('@text.reference', { link = 'Identifier' })
+hi('@text.title',     { link = 'Title' })
+hi('@text.uri',       { link = 'Underlined' })
+hi('@text.underline', { link = 'Underlined' })
+hi('@text.todo',      { link = 'Todo' })
+
+-- Miscs
+hi('@comment',     { link = 'Comment' })
+hi('@punctuation', { link = 'Delimiter' })
+
+-- Constants
+hi('@constant',          { link = 'Constant' })
+hi('@constant.builtin',  { link = 'Special' })
+hi('@constant.macro',    { link = 'Define' })
+hi('@define',            { link = 'Define' })
+hi('@macro',             { link = 'Macro' })
+hi('@string',            { link = 'String' })
+hi('@string.escape',     { link = 'SpecialChar' })
+hi('@string.special',    { link = 'SpecialChar' })
+hi('@character',         { link = 'Character' })
+hi('@character.special', { link = 'SpecialChar' })
+hi('@number',            { link = 'Number' })
+hi('@boolean',           { link = 'Boolean' })
+hi('@float',             { link = 'Float' })
+
+-- Functions
+hi('@function',         { link = 'Function' })
+hi('@function.builtin', { link = 'Special' })
+hi('@function.macro',   { link = 'Macro' })
+hi('@parameter',        { link = 'Identifier' })
+hi('@method',           { link = 'Function' })
+hi('@field',            { link = 'Identifier' })
+hi('@property',         { link = 'Identifier' })
+hi('@constructor',      { link = 'Special' })
+
+-- Keywords
+hi('@conditional', { link = 'Conditional' })
+hi('@repeat',      { link = 'Repeat' })
+hi('@label',       { link = 'Label' })
+hi('@operator',    { link = 'Operator' })
+hi('@keyword',     { link = 'Keyword' })
+hi('@exception',   { link = 'Exception' })
+
+hi('@variable',        { link = 'Identifier' })
+hi('@type',            { link = 'Type' })
+hi('@type.definition', { link = 'Typedef' })
+hi('@storageclass',    { link = 'StorageClass' })
+hi('@namespace',       { link = 'Identifier' })
+hi('@include',         { link = 'Include' })
+hi('@preproc',         { link = 'PreProc' })
+hi('@debug',           { link = 'Debug' })
+hi('@tag',             { link = 'Tag' })
+
+-- LSP semantic tokens
+hi('@lsp.type.class',         { link = 'Structure' })
+hi('@lsp.type.comment',       { link = 'Comment' })
+hi('@lsp.type.decorator',     { link = 'Function' })
+hi('@lsp.type.enum',          { link = 'Structure' })
+hi('@lsp.type.enumMember',    { link = 'Constant' })
+hi('@lsp.type.function',      { link = 'Function' })
+hi('@lsp.type.interface',     { link = 'Structure' })
+hi('@lsp.type.macro',         { link = 'Macro' })
+hi('@lsp.type.method',        { link = 'Function' })
+hi('@lsp.type.namespace',     { link = 'Structure' })
+hi('@lsp.type.parameter',     { link = 'Identifier' })
+hi('@lsp.type.property',      { link = 'Identifier' })
+hi('@lsp.type.struct',        { link = 'Structure' })
+hi('@lsp.type.type',          { link = 'Type' })
+hi('@lsp.type.typeParameter', { link = 'TypeDef' })
+hi('@lsp.type.variable',      { link = 'Identifier' })
+
+if vim.o.background == 'light' then
+  -- Default colors only used with a light background.
+  hi('ColorColumn',  { bg = 'LightRed',                            ctermbg = 'LightRed' })
+  hi('CursorColumn', { bg = 'Grey90',                              ctermbg = 'LightGrey' })
+  hi('CursorLine',   { bg = 'Grey90',                              cterm = { underline = true } })
+  hi('CursorLineNr', { fg = 'Brown', bold = true,                  ctermfg = 'Brown', cterm = { underline = true } })
+  hi('DiffAdd',      { bg = 'LightBlue',                           ctermbg = 'LightBlue' })
+  hi('DiffChange',   { bg = 'LightMagenta',                        ctermbg = 'LightMagenta' })
+  hi('DiffDelete',   { fg = 'Blue', bg = 'LightCyan', bold = true, ctermfg = 'Blue', ctermbg = 'LightCyan' })
+  hi('Directory',    { fg = 'Blue',                                ctermfg = 'DarkBlue' })
+  hi('FoldColumn',   { fg = 'DarkBlue', bg = 'Grey',               ctermfg = 'DarkBlue', ctermbg = 'Grey' })
+  hi('Folded',       { fg = 'DarkBlue', bg = 'LightGrey',          ctermfg = 'DarkBlue', ctermbg = 'Grey' })
+  hi('LineNr',       { fg = 'Brown',                               ctermfg = 'Brown' })
+  hi('MatchParen',   { bg = 'Cyan',                                ctermbg = 'Cyan' })
+  hi('MoreMsg',      { fg = 'SeaGreen', bold = true,               ctermfg = 'DarkGreen' })
+  hi('Pmenu',        { bg = 'LightMagenta',                        ctermfg = 'Black', ctermbg = 'LightMagenta' })
+  hi('PmenuSel',     { bg = 'Grey',                                ctermfg = 'Black', ctermbg = 'LightGrey' })
+  hi('PmenuThumb',   { bg = 'Black',                               ctermbg = 'Black' })
+  hi('Question',     { fg = 'SeaGreen', bold = true,               ctermfg = 'DarkGreen' })
+  hi('Search',       { bg = 'Yellow',                              ctermbg = 'Yellow' })
+  hi('SignColumn',   { fg = 'DarkBlue', bg = 'Grey',               ctermfg = 'DarkBlue', ctermbg = 'Grey' })
+  hi('SpecialKey',   { fg = 'Blue',                                ctermfg = 'DarkBlue' })
+  hi('SpellBad',     { sp = 'Red', undercurl = true,               ctermbg = 'LightRed' })
+  hi('SpellCap',     { sp = 'Blue', undercurl = true,              ctermbg = 'LightBlue' })
+  hi('SpellLocal',   { sp = 'DarkCyan', undercurl = true,          ctermbg = 'Cyan' })
+  hi('SpellRare',    { sp = 'Magenta', undercurl = true,           ctermbg = 'LightMagenta' })
+  hi('TabLine',      { bg = 'LightGrey', underline = true,         ctermfg = 'Black', ctermbg = 'LightGrey', cterm = { underline = true } })
+  hi('Title',        { fg = 'Magenta', bold = true,                ctermfg = 'DarkMagenta' })
+  hi('Visual',       { bg = 'LightGrey',                           ctermbg = 'LightGrey' })
+  hi('WarningMsg',   { fg = 'Red',                                 ctermfg = 'DarkRed' })
+  hi('Comment',      { fg = 'Blue',                                ctermfg = 'DarkBlue' })
+  hi('Constant',     { fg = 'Magenta',                             ctermfg = 'DarkRed' })
+  hi('Special',      { fg = '#6a5acd',                             ctermfg = 'DarkMagenta' })
+  hi('Identifier',   { fg = 'DarkCyan',                            ctermfg = 'DarkCyan' })
+  hi('Statement',    { fg = 'Brown', bold = true,                  ctermfg = 'Brown' })
+  hi('PreProc',      { fg = '#6a0dad',                             ctermfg = 'DarkMagenta' })
+  hi('Type',         { fg = 'SeaGreen', bold = true,               ctermfg = 'DarkGreen' })
+  hi('Underlined',   { fg = 'SlateBlue', underline = true,         ctermfg = 'DarkMagenta', cterm = { underline = true } })
+  hi('Ignore',       {                                             ctermfg = 'White' })
+else
+  -- Default colors only used with a dark background.
+  hi('ColorColumn',  { bg = 'DarkRed',                            ctermbg = 'DarkRed' })
+  hi('CursorColumn', { bg = 'Grey40',                             ctermbg = 'DarkGrey' })
+  hi('CursorLine',   { bg = 'Grey40',                             cterm = { underline = true } })
+  hi('CursorLineNr', { fg = 'Yellow', bold = true,                ctermfg = 'Yellow', cterm = { underline = true } })
+  hi('DiffAdd',      { bg = 'DarkBlue',                           ctermbg = 'DarkBlue' })
+  hi('DiffChange',   { bg = 'DarkMagenta',                        ctermbg = 'DarkMagenta' })
+  hi('DiffDelete',   { fg = 'Blue', bg = 'DarkCyan', bold = true, ctermfg = 'Blue', ctermbg = 'DarkCyan' })
+  hi('Directory',    { fg = 'Cyan',                               ctermfg = 'LightCyan' })
+  hi('FoldColumn',   { fg = 'Cyan', bg = 'Grey',                  ctermfg = 'Cyan', ctermbg = 'DarkGrey' })
+  hi('Folded',       { fg = 'Cyan', bg = 'DarkGrey',              ctermfg = 'Cyan', ctermbg = 'DarkGrey' })
+  hi('LineNr',       { fg = 'Yellow',                             ctermfg = 'Yellow' })
+  hi('MatchParen',   { bg = 'DarkCyan',                           ctermbg = 'DarkCyan' })
+  hi('MoreMsg',      { fg = 'SeaGreen', bold = true,              ctermfg = 'LightGreen' })
+  hi('Pmenu',        { bg = 'Magenta',                            ctermfg = 'Black', ctermbg = 'Magenta' })
+  hi('PmenuSel',     { bg = 'DarkGrey',                           ctermfg = 'DarkGrey', ctermbg = 'Black' })
+  hi('PmenuThumb',   { bg = 'White',                              ctermbg = 'White' })
+  hi('Question',     { fg = 'Green', bold = true,                 ctermfg = 'LightGreen' })
+  hi('Search',       { fg = 'Black', bg = 'Yellow',               ctermfg = 'Black', ctermbg = 'Yellow' })
+  hi('SignColumn',   { fg = 'Cyan', bg = 'Grey',                  ctermfg = 'Cyan', ctermbg = 'DarkGrey' })
+  hi('SpecialKey',   { fg = 'Cyan',                               ctermfg = 'LightBlue' })
+  hi('SpellBad',     { sp = 'Red', undercurl = true,              ctermbg = 'Red' })
+  hi('SpellCap',     { sp = 'Blue', undercurl = true,             ctermbg = 'Blue' })
+  hi('SpellLocal',   { sp = 'Cyan', undercurl = true,             ctermbg = 'Cyan' })
+  hi('SpellRare',    { sp = 'Magenta', undercurl = true,          ctermbg = 'Magenta' })
+  hi('TabLine',      { bg = 'DarkGrey', underline = true,         ctermfg = 'White', ctermbg = 'DarkGrey', cterm = { underline = true } })
+  hi('Title',        { fg = 'Magenta', bold = true,               ctermfg = 'LightMagenta' })
+  hi('Visual',       { bg = 'DarkGrey',                           ctermbg = 'DarkGrey' })
+  hi('WarningMsg',   { fg = 'Red',                                ctermfg = 'LightRed' })
+  hi('Comment',      { fg = '#80a0ff',                            ctermfg = 'Cyan' })
+  hi('Constant',     { fg = '#ffa0a0',                            ctermfg = 'Magenta' })
+  hi('Special',      { fg = 'Orange',                             ctermfg = 'LightRed' })
+  hi('Identifier',   { fg = '#40ffff',                            ctermfg = 'Cyan', cterm = { bold = true } })
+  hi('Statement',    { fg = '#ffff60', bold = true,               ctermfg = 'Yellow' })
+  hi('PreProc',      { fg = '#ff80ff',                            ctermfg = 'LightBlue' })
+  hi('Type',         { fg = '#60ff60', bold = true,               ctermfg = 'LightGreen' })
+  hi('Underlined',   { fg = '#80a0ff', underline = true,          ctermfg = 'LightBlue', cterm = { underline = true } })
+  hi('Ignore',       {                                            ctermfg = 'Black' })
+end
+--stylua: ignore end