feat: added additional language highlighters

Cargo.toml

@@ -26,8 +26,8 @@ tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 once_cell = "1"
 include_dir = "0.7"
 similar = { version = "2", features = ["unicode"] }
-tree-sitter = "0.24"
-tree-sitter-highlight = "0.24"
+tree-sitter = "0.27"
+tree-sitter-highlight = "0.27"
 tree-sitter-rust = "0.23"
 tree-sitter-javascript = "0.23"
 tree-sitter-typescript = "0.23"
@@ -39,10 +39,17 @@ tree-sitter-toml-ng = "0.7"
 tree-sitter-css = "0.23"
 tree-sitter-html = "0.23"
 tree-sitter-md = "0.3"
+tree-sitter-language = "0.1"
+libloading = "0.8"
 unicode-width = "0.2"
 tui-textarea = { version = "0.7", features = ["crossterm"] }
 textwrap = "0.16.2"
 libc = "0.2"
+tree-sitter-c = "0.24"
+tree-sitter-java = "0.23"
+tree-sitter-lua = "0.5"
+tree-sitter-yaml = "0.7"
+arborium-dockerfile = "2.18.2"
 
 [profile.release]
 lto = true

scripts/fetch-grammars.sh

@@ -0,0 +1,125 @@
+#!/usr/bin/env bash
+# Fetch + build heavy tree-sitter grammars as dynamic .so files.
+#
+# Usage:
+#   scripts/fetch-grammars.sh swift c-sharp c++ php ruby   # what you need
+#   scripts/fetch-grammars.sh all                          # all five
+#
+# Output (auto-created, auto-loaded on next diff):
+#   <config>/syntax/grammars/<lang>.so
+#   <config>/syntax/queries/<lang>/highlights.scm (+ injections/locals if upstream ships them)
+#
+# Why dynamic: these five grammars are ~19MB (swift 5.2 + c-sharp 5.5 +
+# cpp 3.7 + php 2.7 + ruby 2.3MB debug). Colors don't need an LSP or a
+# bigger binary — a .so loaded on demand highlights identically.
+set -euo pipefail
+
+ALL="swift c-sharp c++ php ruby"
+
+if [ $# -eq 0 ]; then
+  echo "usage: $0 <lang>... | all"
+  echo "langs: $ALL"
+  exit 1
+fi
+
+if [ "$1" = "all" ]; then
+  set -- $ALL
+fi
+
+repo_for() {
+  case "$1" in
+    swift) echo "https://github.com/alex-pinkus/tree-sitter-swift" ;;
+    c-sharp) echo "https://github.com/tree-sitter/tree-sitter-c-sharp" ;;
+    c++) echo "https://github.com/tree-sitter/tree-sitter-cpp" ;;
+    php) echo "https://github.com/tree-sitter/tree-sitter-php" ;;
+    ruby) echo "https://github.com/tree-sitter/tree-sitter-ruby" ;;
+    *) echo "" ;;
+  esac
+}
+
+# Query source per lang, relative to the cloned repo.
+# Most grammars ship queries/ at top level; php keeps per-variant dirs.
+queries_for() {
+  case "$1" in
+    php) echo "queries" ;; # handled specially below (php/ subdir fallback)
+    *) echo "queries" ;;
+  esac
+}
+
+CONFIG_DIR="${XDG_CONFIG_HOME:-$HOME/.config}/lazygitrs/syntax"
+GRAMMARS="$CONFIG_DIR/grammars"
+QUERIES="$CONFIG_DIR/queries"
+WORK="$(mktemp -d)"
+trap 'rm -rf "$WORK"' EXIT
+
+need() {
+  command -v "$1" >/dev/null 2>&1 || {
+    echo "error: need '$1' (git/cc)" >&2
+    exit 1
+  }
+}
+need git
+need cc
+
+mkdir -p "$GRAMMARS" "$QUERIES"
+
+build_one() {
+  lang="$1"
+  # Normalize display names to install ids (C++ -> cpp file/symbol).
+  case "$lang" in
+    c++) lang="cpp" ;;
+  esac
+  repo="$(repo_for "$lang")"
+  if [ -z "$repo" ]; then
+    echo "! unknown lang '$lang' (try: $ALL, or add it manually — see syntax/README.md)"
+    return 1
+  fi
+  echo "== $lang =="
+  src="$WORK/$lang"
+  git clone --depth 1 --quiet "$repo" "$src"
+
+  # Find parser.c (+ optional scanner.c / scanner.cc).
+  parser="$(find "$src" -maxdepth 4 -name parser.c | head -1)"
+  if [ -z "$parser" ]; then
+    echo "! $lang: no parser.c found in $repo"
+    return 1
+  fi
+  pdir="$(dirname "$parser")"
+  sources="$parser"
+  for s in "$pdir/scanner.c" "$pdir/scanner.cc"; do
+    [ -f "$s" ] && sources="$sources $s"
+  done
+
+  # shellcheck disable=SC2086
+  cc -shared -fPIC -O2 -I"$pdir" $sources -o "$GRAMMARS/$lang.so"
+  echo "  built grammars/$lang.so"
+
+  # Queries: prefer top-level queries/, fall back to first subdir with highlights.scm (php).
+  qsrc="$src/$(queries_for "$lang")"
+  if [ ! -f "$qsrc/highlights.scm" ]; then
+    qsrc="$(dirname "$(find "$src" -name highlights.scm -not -path "*/test/*" | head -1)")"
+  fi
+  if [ -z "$qsrc" ] || [ ! -f "$qsrc/highlights.scm" ]; then
+    echo "! $lang: no highlights.scm in $repo — copy one from nvim-treesitter:"
+    echo "  $QUERIES/$lang/highlights.scm"
+    return 1
+  fi
+  mkdir -p "$QUERIES/$lang"
+  for q in highlights injections locals; do
+    [ -f "$qsrc/$q.scm" ] && cp "$qsrc/$q.scm" "$QUERIES/$lang/$q.scm"
+  done
+  echo "  copied queries/$lang/*.scm"
+}
+
+failed=0
+for lang in "$@"; do
+  build_one "$lang" || failed=1
+done
+
+if [ "$failed" = 0 ]; then
+  echo "done → $CONFIG_DIR"
+  echo "open any diff, or check \`?\` → Syntax highlighting health…"
+else
+  echo "some langs failed — see messages above (manual steps in $CONFIG_DIR/README.md)"
+  exit 1
+fi

src/gui/controller/diff_mode.rs

@@ -6,7 +6,7 @@ use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
 
 use crate::config::keybindings::parse_key;
 use crate::gui::modes::diff_mode::{DiffModeFocus, DiffModeSelector};
-use crate::gui::popup::{CommandEntry, CommandSection, MenuItem, PopupState};
+use crate::gui::popup::{CommandAction, CommandEntry, CommandSection, MenuItem, PopupState};
 use crate::gui::{DiffPayload, Gui, textarea_input};
 use crate::model::FileChangeStatus;
 use crate::os::platform::Platform;
@@ -825,6 +825,11 @@ fn show_diff_mode_command_palette(gui: &mut Gui) {
             CommandEntry::keybinding("n/N".into(), "Next / previous search match".into()),
             CommandEntry::keybinding("y".into(), "Copy to clipboard".into()),
             CommandEntry::keybinding("?".into(), "Show command palette".into()),
+            CommandEntry::action(
+                "".into(),
+                "Syntax highlighting...".into(),
+                CommandAction::ShowSyntaxHealth,
+            ),
         ],
     };