From 742f5aa24d7f65b14a5c32e2685a89d84613e970 Mon Sep 17 00:00:00 2001
From: Ascrod <32915892+Ascrod@users.noreply.github.com>
Date: Sat, 27 Apr 2019 08:49:17 -0400
Subject: Bug 1399616 - add WP emoji styling to reader mode.

---
 toolkit/components/reader/ReaderMode.jsm |  2 ++
 toolkit/themes/shared/aboutReader.css    | 11 +++++++++++
 2 files changed, 13 insertions(+)

diff --git a/toolkit/components/reader/ReaderMode.jsm b/toolkit/components/reader/ReaderMode.jsm
index b9b31e29f..5ba898aec 100644
--- a/toolkit/components/reader/ReaderMode.jsm
+++ b/toolkit/components/reader/ReaderMode.jsm
@@ -12,6 +12,7 @@ const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
 // names so that rules in aboutReader.css can match them.
 const CLASSES_TO_PRESERVE = [
   "caption",
+  "emoji",
   "hidden",
   "invisble",
   "sr-only",
@@ -19,6 +20,7 @@ const CLASSES_TO_PRESERVE = [
   "visuallyhidden",
   "wp-caption",
   "wp-caption-text",
+  "wp-smiley",
 ];
 
 Cu.import("resource://gre/modules/Services.jsm");
diff --git a/toolkit/themes/shared/aboutReader.css b/toolkit/themes/shared/aboutReader.css
index 4dbf11f6d..e685cf69f 100644
--- a/toolkit/themes/shared/aboutReader.css
+++ b/toolkit/themes/shared/aboutReader.css
@@ -738,3 +738,14 @@ body:not(.loaded) .toolbar:-moz-locale-dir(rtl) {
 .moz-reader-content .sr-only {
   display: none;
 }
+
+/* Enforce wordpress and similar emoji/smileys aren't sized to be full-width */
+.moz-reader-content img.wp-smiley,
+.moz-reader-content img.emoji {
+  display: inline-block;
+  border-width: 0;
+  /* height: auto is implied from `.moz-reader-content *` rule. */
+  width: 1em;
+  margin: 0 .07em;
+  padding: 0;
+}
-- 
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