From 55c6aa8c2cdbf9323ebd62599689991f4bd26a82 Mon Sep 17 00:00:00 2001
From: Blaise
Date: Fri, 28 Oct 2022 15:24:50 -0500
Subject: Special treatment for diffs

---
 microlight.js | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/microlight.js b/microlight.js
index 202cc0c..295cad2 100644
--- a/microlight.js
+++ b/microlight.js
@@ -62,6 +62,8 @@
                 lastTokenType,
                 // flag determining if token is multi-character
                 multichar,
+                // first token of line
+                firstToken,
                 node;
 
             // running through characters and highlighting
@@ -110,6 +112,8 @@
                         ).setAttribute('class', 'c'+(
                             // not formatted
                             !tokenType ? 0 :
+                            // diff
+                            tokenType > 10 ? tokenType :
                             // punctuation
                             tokenType < 3 ? 2 :
                             // comments
@@ -133,10 +137,13 @@
                     // initializing a new token
                     token = '';
 
+                    // first token of line
+                    firstToken = pos < 2 || prev1 == '\n';
+
                     // determining the new token type (going up the
                     // list until matching a token type start
                     // condition)
-                    tokenType = 11;
+                    tokenType = 15;
                     while (![
                         1,                   //  0: whitespace
                                              //  1: operator or braces
@@ -159,7 +166,15 @@
                         chr+next1 == '/*',   //  8: multiline comment
                         chr+next1 == '//',   //  9: single-line comment
                                              // 10: hash-style comment
-                        chr == '#' && next1+text[pos+1]+text[pos+2] != 'inc'
+                        chr == '#' && next1+text[pos+1]+text[pos+2] != 'inc',
+                                             // 11: diff add
+                        firstToken && chr == '+',
+                                             // 12: diff remove
+                        firstToken && chr == '-',
+                                             // 13: diff compared
+                        firstToken && (chr+next1+text[pos+1] == '+++' || chr+next1+text[pos+1] == '---'),
+                                             // 14: diff offset
+                        firstToken && chr+next1 == '@@'
                     ][--tokenType]);
                 }
 
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