Pair plugin for reovim - bracket matching, highlighting, and auto-pair insertion

This plugin provides:

• Rainbow bracket coloring based on nesting depth (6-color cycle)
• Matched pair highlighting when cursor is inside brackets
• Bold + underline highlighting when cursor is directly ON a bracket
• Unmatched bracket warning (red underline)
• Auto-insertion of closing brackets with cursor positioning

Supported Brackets

• Round brackets: ( )
• Square brackets: [ ]
• Curly brackets: { }
• Backticks: ` (for markdown code, template literals)
• Single quotes: '
• Double quotes: "

Note: Angle brackets <> are intentionally excluded as they conflict with operators (->, =>, <=, >=, <<, >>) in most languages.

Symmetric pairs (backticks, quotes) use a tracking mechanism to prevent infinite recursion when auto-inserting the closing character.

Highlighting Behavior

State Management

The plugin stores PairState in PluginStateRegistry, tracking:

• Cached bracket depth information per buffer
• Current matched pair (if cursor is inside or on a bracket)