Highlight additions, deletions, file changes, and line changes in diff/patch files for better visibility. Nov 06 2024, 11:00:34 PM
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// ==UserScript==
// @name Highlight diff in patches
// @namespace imxitiz's-Script
// @match https://dwm.suckless.org/patches/*.diff*
// @match https://*/*.patch*
// @match https://*/*.diff*
// @grant none
// @version 1.1
// @author imxitiz
// @license GNU GPLv3
// @description Highlight additions, deletions, file changes, and line changes in diff/patch files for better visibility. Nov 06 2024, 11:00:34 PM
// ==/UserScript==
(() => {
// Function to inject CSS styles
function addStyles() {
const styles = `
.addition {
color: green;
font-weight: bold;
}
.deletion {
color: red;
text-decoration: line-through;
}
.file-change {
color: yellow; /* or any visible color */
background-color: rgba(255, 255, 0, 0.2); /* Light yellow background */
font-weight: bold; /* Optional: make it bold for emphasis */
}
.line-change {
color: cyan; /* or any visible color */
background-color: rgba(0, 255, 255, 0.2); /* Light cyan background */
font-weight: bold; /* Optional: make it bold for emphasis */
}
`;
const styleSheet = document.createElement("style");
styleSheet.setAttribute("type", "text/css");
styleSheet.innerText = styles;
document.head.appendChild(styleSheet);
}
// Function to highlight the diff changes
function highlightDiff() {
const pre = document.querySelector("pre");
if (!pre) return; // Exit if no <pre> tag found
let content = pre.innerHTML;
// Highlight additions, ignoring lines that start with --- or +++, and remove the "+"
content = content.replace(
/^(?!\+\+\+|---)\+(.*)$/gm,
(_match, p1) => `<span class="addition">${p1}</span>`,
);
// Highlight deletions, ignoring lines that start with --- or +++, and remove the "-"
content = content.replace(
/^(?!\+\+\+|---)-(.*)$/gm,
(_match, p1) => `<span class="deletion">${p1}</span>`,
);
// Highlight file change indicators (--- and +++)
content = content.replace(
/^(--- .+|^\+\+\+ .+)$/gm,
(match) => `<span class="file-change">${match}</span>`,
);
// Highlight line number changes (starting with @@)
content = content.replace(
/^@@ .+$/gm,
(match) => `<span class="line-change">${match}</span>`,
);
pre.innerHTML = content;
}
// Execute functions
addStyles();
highlightDiff();
})();