feat: blink.pairs support

[Kaiser-Yang]

Summary by CodeRabbit

• New Features
  • Extended Gruvbox theme with added highlight groups for blink pair matching and blink indentation guides, now available in red, orange, yellow, green, blue, cyan (aqua), and purple/violet variants.

[coderabbitai]

📝 Walkthrough

Walkthrough

Adds public highlight mappings for BlinkPairs (7 colors) and BlinkIndent (several colors) to lua/gruvbox.lua, linking each new group to existing Gruvbox color tokens; no control flow or other logic changes.

Changes

Cohort / File(s)	Summary
Gruvbox blink highlight groups lua/gruvbox.lua	Added BlinkPairs{Red, Orange, Yellow, Green, Blue, Cyan, Purple} linked to Gruvbox{Red,Orange,Yellow,Green,Blue,Aqua,Purple} and added BlinkIndent mappings (Green, Blue, Cyan, Violet) linked to corresponding Gruvbox tokens.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• feat: blink.indent support #418: Adds BlinkIndent highlight group mappings in the same lua/gruvbox.lua file, closely related to these blink-related highlight additions.

Poem

🐰
Colors hop in tiny arcs and cheer,
Blink pairs shimmer, bright and clear,
Indents glow in verdant light,
Gruvbox paints the code at night,
A rabbit claps — the hues delight! 🥕✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'feat: blink.pairs support' accurately describes the main change: adding highlight group mappings for blink.pairs UI elements to the Gruvbox theme.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@lua/gruvbox.lua`:
- Around line 561-567: The highlight group is misnamed: replace the
BlinkPairsViolet entry with BlinkPairsPurple so it matches blink.pairs
expectations; locate the table entries where BlinkPairsViolet is defined
(alongside BlinkPairsRed, BlinkPairsOrange, BlinkPairsYellow, BlinkPairsGreen,
BlinkPairsBlue, BlinkPairsCyan) and rename the key BlinkPairsViolet to
BlinkPairsPurple to restore the plugin's default rainbow depth-based
highlighting.

[coderabbitai]

🧹 Nitpick comments (1)

lua/gruvbox.lua (1)

561-567: BlinkPairs highlight groups implementation is correct and follows all conventions.

The seven highlight groups (Red, Orange, Yellow, Green, Blue, Cyan, Purple) correctly follow the plugin prefix naming convention and link to base Gruvbox* groups that handle light/dark backgrounds automatically. The previous BlinkPairsViolet → BlinkPairsPurple fix is confirmed.

Consider adding BlinkPairsUnmatched to complete blink.pairs coverage. This group is used by default for unmatched/mismatched bracket pairs. Without it, users would need to manually configure this highlighting.

Optional addition for unmatched pairs

     BlinkPairsPurple = { link = "GruvboxPurple" },
+    BlinkPairsUnmatched = { link = "GruvboxRed" },
     BlinkIndentRed = { link = "GruvboxRed" },

Code formatting complies with stylua requirements.

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@lua/gruvbox.lua` around lines 561 - 567, Add a BlinkPairsUnmatched highlight
group to mirror the other BlinkPairs entries so unmatched/mismatched bracket
pairs are styled by the theme; update the list in gruvbox.lua alongside
BlinkPairsRed/Orange/Yellow/Green/Blue/Cyan/Purple by adding BlinkPairsUnmatched
and link it to an appropriate Gruvbox group (e.g., "GruvboxRed") so it follows
the same light/dark handling as the others.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In `@lua/gruvbox.lua`:
- Around line 561-567: Add a BlinkPairsUnmatched highlight group to mirror the
other BlinkPairs entries so unmatched/mismatched bracket pairs are styled by the
theme; update the list in gruvbox.lua alongside
BlinkPairsRed/Orange/Yellow/Green/Blue/Cyan/Purple by adding BlinkPairsUnmatched
and link it to an appropriate Gruvbox group (e.g., "GruvboxRed") so it follows
the same light/dark handling as the others.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: a100e4f6-66cf-4d8a-80b9-54c8875a3514

📥 Commits

Reviewing files that changed from the base of the PR and between d3d3802 and bea04a9.

📒 Files selected for processing (1)

• lua/gruvbox.lua