feat: rename everything
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16 changed files with 172 additions and 165 deletions
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*fugitive-ts.nvim.txt* Treesitter highlighting for vim-fugitive diffs
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Author: Barrett Ruth <br.barrettruth@gmail.com>
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License: MIT
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==============================================================================
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INTRODUCTION *fugitive-ts.nvim*
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fugitive-ts.nvim adds treesitter-based syntax highlighting to vim-fugitive
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diff views. It overlays language-aware highlights on top of fugitive's
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default regex-based diff highlighting.
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Features: ~
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- Syntax highlighting in |:Git| summary diffs and commit detail views
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- Syntax highlighting in |:Gdiffsplit| / |:Gvdiffsplit| side-by-side diffs
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- Vim syntax fallback for languages without a treesitter parser
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- Blended diff background colors that preserve syntax visibility
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- Optional diff prefix (`+`/`-`/` `) concealment
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- Gutter (line number) highlighting
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==============================================================================
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REQUIREMENTS *fugitive-ts-requirements*
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- Neovim 0.9.0+
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- vim-fugitive (https://github.com/tpope/vim-fugitive)
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- Treesitter parsers for languages you want highlighted
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==============================================================================
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SETUP *fugitive-ts-setup*
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Using lazy.nvim: >lua
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{
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'barrettruth/fugitive-ts.nvim',
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dependencies = { 'tpope/vim-fugitive' },
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opts = {},
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}
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<
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The plugin works automatically with no configuration required. For
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customization, see |fugitive-ts-config|.
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==============================================================================
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CONFIGURATION *fugitive-ts-config*
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*fugitive-ts.Config*
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Fields: ~
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{enabled} (boolean, default: true)
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Enable or disable highlighting globally.
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{debug} (boolean, default: false)
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Enable debug logging to |:messages| with
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`[fugitive-ts]` prefix.
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{debounce_ms} (integer, default: 0)
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Debounce delay in milliseconds for re-highlighting
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after buffer changes. Lower values feel snappier
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but use more CPU.
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{hide_prefix} (boolean, default: false)
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Hide diff prefixes (`+`/`-`/` `) using virtual
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text overlay. Makes code appear without the
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leading diff character. When `highlights.background`
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is also enabled, the overlay inherits the line's
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background color.
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{treesitter} (table, default: see below)
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Treesitter highlighting options.
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See |fugitive-ts.TreesitterConfig| for fields.
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{vim} (table, default: see below)
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Vim syntax highlighting options (experimental).
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See |fugitive-ts.VimConfig| for fields.
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{highlights} (table, default: see below)
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Controls which highlight features are enabled.
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See |fugitive-ts.Highlights| for fields.
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*fugitive-ts.TreesitterConfig*
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Treesitter config fields: ~
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{enabled} (boolean, default: true)
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Apply treesitter syntax highlighting to code.
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{max_lines} (integer, default: 500)
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Skip treesitter highlighting for hunks larger than
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this many lines. Prevents lag on massive diffs.
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*fugitive-ts.VimConfig*
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Vim config fields: ~
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{enabled} (boolean, default: false)
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Use vim syntax highlighting as fallback when no
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treesitter parser is available for a language.
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Creates a scratch buffer, sets the filetype, and
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queries |synID()| per character to extract
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highlight groups. Slower than treesitter but
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covers languages without a TS parser installed.
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{max_lines} (integer, default: 200)
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Skip vim syntax highlighting for hunks larger than
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this many lines. Lower than the treesitter default
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due to the per-character cost of |synID()|.
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*fugitive-ts.Highlights*
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Highlights table fields: ~
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{background} (boolean, default: true)
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Apply background highlighting to `+`/`-` lines
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using `FugitiveTsAdd`/`FugitiveTsDelete` groups
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(derived from `DiffAdd`/`DiffDelete` backgrounds).
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{gutter} (boolean, default: true)
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Highlight line numbers with matching colors.
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Only visible if line numbers are enabled.
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Note: Header context (e.g., `@@ -10,3 +10,4 @@ func()`) is always
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highlighted with treesitter when a parser is available.
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Language detection uses Neovim's built-in |vim.filetype.match()| and
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|vim.treesitter.language.get_lang()|. To customize filetype detection
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or register treesitter parsers for custom filetypes, use
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|vim.filetype.add()| and |vim.treesitter.language.register()|.
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==============================================================================
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API *fugitive-ts-api*
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setup({opts}) *fugitive-ts.setup()*
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Configure the plugin with `opts`.
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Parameters: ~
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{opts} (|fugitive-ts.Config|, optional) Configuration table.
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attach({bufnr}) *fugitive-ts.attach()*
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Manually attach highlighting to a buffer. Called automatically for
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fugitive buffers via the `FileType fugitive` autocmd.
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Parameters: ~
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{bufnr} (integer, optional) Buffer number. Defaults to current buffer.
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refresh({bufnr}) *fugitive-ts.refresh()*
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Manually refresh highlighting for a buffer. Useful after external changes
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or for debugging.
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Parameters: ~
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{bufnr} (integer, optional) Buffer number. Defaults to current buffer.
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==============================================================================
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IMPLEMENTATION *fugitive-ts-implementation*
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Summary / commit detail views: ~
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1. `FileType fugitive` or `FileType git` (for `fugitive://` buffers)
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triggers |fugitive-ts.attach()|
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2. The buffer is parsed to detect file headers (`M path/to/file`,
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`diff --git a/... b/...`) and hunk headers (`@@ -10,3 +10,4 @@`)
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3. For each hunk:
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- Language is detected from the filename using |vim.filetype.match()|
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- Diff prefixes (`+`/`-`/` `) are stripped from code lines
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- Code is parsed with |vim.treesitter.get_string_parser()|
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- If no treesitter parser and `vim.enabled`: vim syntax fallback via
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scratch buffer and |synID()|
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- Background extmarks (`FugitiveTsAdd`/`FugitiveTsDelete`) at priority 198
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- `Normal` extmarks at priority 199 clear underlying diff foreground
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- Syntax highlights are applied as extmarks at priority 200
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- Conceal extmarks hide diff prefixes when `hide_prefix` is enabled
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4. Re-highlighting occurs on `TextChanged` (debounced) and `Syntax` events
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Diffsplit views: ~
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1. `OptionSet diff` detects when a window enters diff mode
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2. If any `&diff` window in the tabpage contains a `fugitive://` buffer,
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all `&diff` windows receive a window-local 'winhighlight' override
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3. The override remaps `DiffAdd`/`DiffDelete`/`DiffChange`/`DiffText` to
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background-only variants, allowing existing treesitter highlighting to
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show through the diff colors
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==============================================================================
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KNOWN LIMITATIONS *fugitive-ts-limitations*
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Syntax Highlighting Flash ~
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*fugitive-ts-flash*
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When opening a fugitive buffer, there is an unavoidable visual "flash" where
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the buffer briefly shows fugitive's default diff highlighting before
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fugitive-ts.nvim applies treesitter highlights.
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This occurs because fugitive-ts.nvim hooks into the `FileType fugitive` event,
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which fires after vim-fugitive has already painted the buffer. Even with
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`debounce_ms = 0`, the re-painting goes through Neovim's event loop.
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To minimize the flash, use a low debounce value: >lua
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require('fugitive-ts').setup({
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debounce_ms = 0,
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})
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<
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See https://github.com/barrettruth/fugitive-ts.nvim/issues/18 for discussion
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and potential solutions.
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==============================================================================
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HEALTH CHECK *fugitive-ts-health*
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Run |:checkhealth| fugitive-ts to verify your setup.
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Checks performed:
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- Neovim version >= 0.9.0
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- vim-fugitive is installed
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==============================================================================
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vim:tw=78:ts=8:ft=help:norl:
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