From 919afb46e28b05499fd0dfe73c2d8c64694d37e1 Mon Sep 17 00:00:00 2001
From: NGPixel <github@ngpixel.com>
Date: Sat, 24 Jun 2017 16:08:55 -0400
Subject: [PATCH] feat: Optional linebreaks + mathjax processing

---
 config.sample.yml             |  9 +++++++++
 npm/configs/config.docker.yml |  9 +++++++++
 npm/configs/config.heroku.yml |  9 +++++++++
 server/app/data.yml           |  1 +
 server/libs/markdown.js       | 12 ++++++++++--
 5 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/config.sample.yml b/config.sample.yml
index fed0b54d..e4ef3bc2 100644
--- a/config.sample.yml
+++ b/config.sample.yml
@@ -134,6 +134,15 @@ git:
   # Whether to use user email as author in commits
   showUserEmail: true
 
+# ---------------------------------------------------------------------
+# Features
+# ---------------------------------------------------------------------
+# You can enable / disable specific features below
+
+features:
+  linebreaks: true
+  mathjax: true
+
 # ---------------------------------------------------------------------
 # External Logging
 # ---------------------------------------------------------------------
diff --git a/npm/configs/config.docker.yml b/npm/configs/config.docker.yml
index 6b51c11b..7bd1fa3b 100644
--- a/npm/configs/config.docker.yml
+++ b/npm/configs/config.docker.yml
@@ -132,6 +132,15 @@ git:
   # Whether to use user email as author in commits
   showUserEmail: true
 
+# ---------------------------------------------------------------------
+# Features
+# ---------------------------------------------------------------------
+# You can enable / disable specific features below
+
+features:
+  linebreaks: true
+  mathjax: true
+
 # ---------------------------------------------------------------------
 # External Logging
 # ---------------------------------------------------------------------
diff --git a/npm/configs/config.heroku.yml b/npm/configs/config.heroku.yml
index f32b7745..5ef4904b 100644
--- a/npm/configs/config.heroku.yml
+++ b/npm/configs/config.heroku.yml
@@ -132,6 +132,15 @@ git:
   # Whether to use user email as author in commits
   showUserEmail: $(WIKI_SHOW_USER_EMAIL)
 
+# ---------------------------------------------------------------------
+# Features
+# ---------------------------------------------------------------------
+# You can enable / disable specific features below
+
+features:
+  linebreaks: true
+  mathjax: true
+
 # ---------------------------------------------------------------------
 # External Logging
 # ---------------------------------------------------------------------
diff --git a/server/app/data.yml b/server/app/data.yml
index 40b07881..8ee8dd9f 100644
--- a/server/app/data.yml
+++ b/server/app/data.yml
@@ -49,6 +49,7 @@ defaults:
       serverEmail: wiki@example.com
       showUserEmail: true
     features:
+      linebreaks: true
       mathjax: true
     externalLogging:
       bugsnap: false
diff --git a/server/libs/markdown.js b/server/libs/markdown.js
index d0f31d32..dfadaae2 100644
--- a/server/libs/markdown.js
+++ b/server/libs/markdown.js
@@ -21,6 +21,7 @@ const mdRemove = require('remove-markdown')
 
 var mkdown = md({
   html: true,
+  breaks: appconfig.features.linebreaks,
   linkify: true,
   typography: true,
   highlight(str, lang) {
@@ -53,7 +54,10 @@ var mkdown = md({
     tabWidth: 4
   })
   .use(mdAttrs)
-  .use(mdMathjax)
+
+if (appconfig.features.mathjax) {
+  mkdown.use(mdMathjax)
+}
 
 // Rendering rules
 
@@ -296,7 +300,11 @@ const parseContent = (content) => {
 
   // Mathjax Post-processor
 
-  return processMathjax(cr.html())
+  if (appconfig.features.mathjax) {
+    return processMathjax(cr.html())
+  } else {
+    return Promise.resolve(cr.html())
+  }
 }
 
 /**