From 3227bddc031c31475e9575bbaf6d92b0ba65b4f4 Mon Sep 17 00:00:00 2001
From: Abdulkaiz Khatri <24286590+ful1e5@users.noreply.github.com>
Date: Wed, 26 Jul 2023 15:15:06 +0530
Subject: [PATCH] feat: Implement highlight-blend feature

Related to #251
---
 CHANGELOG.md                       | 12 ++++++++++++
 Usage.md                           | 15 ++++++++-------
 doc/github-nvim-theme.txt          | 12 +++++++-----
 lua/github-theme/lib/compiler.lua  |  1 +
 lua/github-theme/util/template.lua |  6 +++++-
 5 files changed, 33 insertions(+), 13 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e178d0a6..b7233d1d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [unreleased]
 
+### What's New?
+
+- Implement [highlight-blend](https://neovim.io/doc/user/syntax.html#highlight-blend) feature #251
+
+### Changes
+
+-
+
+### Issues Fix
+
+-
+
 ## [v1.0.1] - 23 July 2023
 
 ### What's New?
diff --git a/Usage.md b/Usage.md
index a99996b9..41b4f3a3 100644
--- a/Usage.md
+++ b/Usage.md
@@ -365,13 +365,14 @@ These values are: `add`, `removed`, `changed`, `conflict`, and `ignored`.
 A `group` is the definition of a `highlight-group`. The key of the group table is the `highlight-group` that will be defined, and the table value is the
 arguments to the |:highlight| command.
 
-| Key   | Help                | Description                                                |
-| ----- | ------------------- | ---------------------------------------------------------- |
-| fg    | \|highlight-guifg\| | The color value of the foreground of the highlight group   |
-| bg    | \|highlight-guibg\| | The color value of the background of the highlight group   |
-| sp    | \|highlight-guisp\| | The color for underlines and undercurls                    |
-| style | \|highlight-gui\|   | The style of the highlight group. Ex `italic`, `bold`, etc |
-| link  | \|highlight-link\|  | Link one `highlight-group` to another                      |
+| Key   | Help                | Description                                                                              |
+| ----- | ------------------- | ---------------------------------------------------------------------------------------- |
+| fg    | \|highlight-guifg\| | The color value of the foreground of the highlight group                                 |
+| bg    | \|highlight-guibg\| | The color value of the background of the highlight group                                 |
+| sp    | \|highlight-guisp\| | The color for underlines and undercurls                                                  |
+| blend | \|highlight-blend\| | Override the blend level for a highlight group within the popupmenu or floating windows. |
+| style | \|highlight-gui\|   | The style of the highlight group. Ex `italic`, `bold`, etc                               |
+| link  | \|highlight-link\|  | Link one `highlight-group` to another                                                    |
 
 If the value of `link` is present and is not empty, github theme will link the group to the corresponding value.
 
diff --git a/doc/github-nvim-theme.txt b/doc/github-nvim-theme.txt
index d19068bc..df285ef3 100644
--- a/doc/github-nvim-theme.txt
+++ b/doc/github-nvim-theme.txt
@@ -449,9 +449,9 @@ A `group` is the definition of a `highlight-group`. The key of the group table
 is the `highlight-group` that will be defined, and the table value is the
 arguments to the |:highlight| command.
 
-  ------------------------------------------------------------------------------
+  -----------------------------------------------------------------------------------
   Key     Help                Description
-  ------- ------------------- --------------------------------------------------
+  ------- ------------------- -------------------------------------------------------
   fg      |highlight-guifg|   The color value of the foreground of the highlight
                               group
 
@@ -460,11 +460,13 @@ arguments to the |:highlight| command.
 
   sp      |highlight-guisp|   The color for underlines and undercurls
 
-  style   |highlight-gui|     The style of the highlight group. Ex italic, bold,
-                              etc
+  blend   |highlight-blend|   Override the blend level for a highlight group within
+                              the popupmenu or floating windows.
+
+  style   |highlight-gui|     The style of the highlight group. Ex italic, bold, etc
 
   link    |highlight-link|    Link one highlight-group to another
-  ------------------------------------------------------------------------------
+  -----------------------------------------------------------------------------------
 If the value of `link` is present and is not empty, github theme will link the
 group to the corresponding value.
 
diff --git a/lua/github-theme/lib/compiler.lua b/lua/github-theme/lib/compiler.lua
index 03d303fc..200dc8d0 100644
--- a/lua/github-theme/lib/compiler.lua
+++ b/lua/github-theme/lib/compiler.lua
@@ -59,6 +59,7 @@ vim.o.background = "%s"
       op.bg = values.bg
       op.fg = values.fg
       op.sp = values.sp
+      op.blend = values.blend
       table.insert(lines, fmt([[h(0, "%s", %s)]], name, inspect(op)))
     end
   end
diff --git a/lua/github-theme/util/template.lua b/lua/github-theme/util/template.lua
index 49ec0524..bd0d74bd 100644
--- a/lua/github-theme/util/template.lua
+++ b/lua/github-theme/util/template.lua
@@ -37,7 +37,11 @@ function M.parse(template, spec)
     if type(opts) == 'table' then
       local new = {}
       for key, value in pairs(opts) do
-        new[key] = parse_string(value, spec)
+        if type(value) == 'string' then
+          new[key] = parse_string(value, spec)
+        elseif type(value) == 'number' then
+          new[key] = value
+        end
       end
       result[group] = new
     else