From eab8f24333b9483aea5c2514461e68ed1ea47497 Mon Sep 17 00:00:00 2001
From: ylemkimon <mail@ylem.kim>
Date: Thu, 9 Aug 2018 21:54:58 +0900
Subject: [PATCH] Improve supported functions documentation 2 (#1576)

* Move remarkable plugins to website/lib

* Bypass escaped delimiter

* Add redirect page

* Include stylesheet in the documentation for versioning
---
 docs/support_table.md                |  2 +-
 docs/supported.md                    |  3 ++-
 website/{ => lib}/empty_thead.js     |  0
 website/{ => lib}/remarkableKatex.js | 13 +++++++++++--
 website/siteConfig.js                |  6 ++++--
 website/static/function-support.html | 10 ++++++++++
 6 files changed, 28 insertions(+), 6 deletions(-)
 rename website/{ => lib}/empty_thead.js (100%)
 rename website/{ => lib}/remarkableKatex.js (94%)
 create mode 100644 website/static/function-support.html

diff --git a/docs/support_table.md b/docs/support_table.md
index fbe5c423..d250e148 100644
--- a/docs/support_table.md
+++ b/docs/support_table.md
@@ -2,7 +2,7 @@
 id: support_table
 title: Support Table
 ---
-<!-- {@stylesheet: static/katex.min.css} -->
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.10.0-beta/dist/katex.min.css" integrity="sha384-9tPv11A+glH/on/wEu99NVwDPwkMQESOocs/ZGXPoIiLE8MU/qkqUcZ3zzL+6DuH" crossorigin="anonymous">
 <style>
 table tr,
 table td {
diff --git a/docs/supported.md b/docs/supported.md
index c7b0a69c..87927a25 100644
--- a/docs/supported.md
+++ b/docs/supported.md
@@ -2,6 +2,7 @@
 id: supported
 title: Supported Functions
 ---
+<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.10.0-beta/dist/katex.min.css" integrity="sha384-9tPv11A+glH/on/wEu99NVwDPwkMQESOocs/ZGXPoIiLE8MU/qkqUcZ3zzL+6DuH" crossorigin="anonymous">
 <style>
 table tr,
 table td {
@@ -531,7 +532,7 @@ One can stack font family, font weight, and font shape by using the `\textXX` v
 |$`$ <code>`</code>|$\triangledown$ `\triangledown`  |$\sphericalangle$ `\sphericalangle`
 |$\text{\textquoteleft}$ `\text{\textquoteleft}`  |$\triangleleft$ `\triangleleft`  |$\top$ `\top`
 |$\lq$ `\lq`  |$\triangleright$ `\triangleright`|$\bot$ `\bot`
-|$\text{\textquoteright}$ `\text{\textquoteright}`|$\bigtriangledown$ `\bigtriangledown`  |$\text{\textdollar}$ `\$`
+|$\text{\textquoteright}$ `\text{\textquoteright}`|$\bigtriangledown$ `\bigtriangledown`  |$\$$ `\$`
 |$\rq$ `\rq`  |$\bigtriangleup$ `\bigtriangleup`|$\text{\textdollar}$ `\text{\textdollar}`
 |$\text{\textquotedblleft}$ `\text{\textquotedblleft}`  |$\blacktriangle$ `\blacktriangle`|$\pounds$ `\pounds`
 |$"$ `"`|$\blacktriangledown$ `\blacktriangledown` |$\text{\textsterling}$ `\text{\textsterling}`
diff --git a/website/empty_thead.js b/website/lib/empty_thead.js
similarity index 100%
rename from website/empty_thead.js
rename to website/lib/empty_thead.js
diff --git a/website/remarkableKatex.js b/website/lib/remarkableKatex.js
similarity index 94%
rename from website/remarkableKatex.js
rename to website/lib/remarkableKatex.js
index 11b4f376..b2e35766 100644
--- a/website/remarkableKatex.js
+++ b/website/lib/remarkableKatex.js
@@ -26,7 +26,7 @@ SOFTWARE.
  * sequences into math HTML using the KaTeX package.
  */
 module.exports = function(md, options) {
-    const katex = require("../");
+    const katex = require("../../");
 
     function renderKatex(source, displayMode) {
         return katex.renderToString(source, {displayMode, throwOnError: false});
@@ -130,11 +130,13 @@ module.exports = function(md, options) {
      */
     function parseInlineKatex(state, silent) {
         const dollar = 0x24;
+        const backslash = 0x5c;
         let pos = state.pos;
         const start = pos;
         const max = state.posMax;
         let matchStart;
-        let matchEnd ;
+        let matchEnd;
+        let esc;
 
         if (state.src.charCodeAt(pos) !== dollar) { return false; }
         ++pos;
@@ -151,6 +153,13 @@ module.exports = function(md, options) {
         while ((matchStart = state.src.indexOf('$', matchEnd)) !== -1) {
             matchEnd = matchStart + 1;
 
+            // bypass escaped delimiters
+            esc = matchStart - 1;
+            while (state.src.charCodeAt(esc) === backslash) {
+                --esc;
+            }
+            if ((matchStart - esc) % 2 === 0) { continue; }
+
             while (matchEnd < max && state.src.charCodeAt(matchEnd) === dollar) {
                 ++matchEnd;
             }
diff --git a/website/siteConfig.js b/website/siteConfig.js
index d96711ce..cfc3e6a4 100644
--- a/website/siteConfig.js
+++ b/website/siteConfig.js
@@ -65,13 +65,15 @@ const siteConfig = {
         theme: 'default',
     },
 
-    markdownPlugins: [require('./remarkableKatex'), require('./empty_thead')],
+    markdownPlugins: [
+        require('./lib/remarkableKatex'),
+        require('./lib/empty_thead'),
+    ],
 
     scripts: [
         'https://buttons.github.io/buttons.js',
         baseUrl + 'js/scrollspy.js',
     ],
-    stylesheets: ['https://cdn.jsdelivr.net/npm/katex@0.10.0-beta/dist/katex.min.css'],
 
     separateCss: ['static/static', 'static\\static'],
 
diff --git a/website/static/function-support.html b/website/static/function-support.html
new file mode 100644
index 00000000..ec566fe2
--- /dev/null
+++ b/website/static/function-support.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en">
+ <head>
+   <title>Function Support in KaTeX</title>
+   <meta http-equiv="refresh" content="0;URL='./docs/supported.html'" />
+ </head>
+ <body>
+   <p>This page has moved to the <a href="./docs/supported.html">documentation</a>.</p>
+ </body>
+</html>