fix-update: escape backticks in between text

Author: yaya-usman

src/editor/deserialize.ts

@@ -32,7 +32,7 @@ function escape(text: string): string {
 
 // Finds the length of the longest backtick sequence in the given text, used for
 // escaping backticks in code blocks
-function longestBacktickSequence(text: string): number {
+export function longestBacktickSequence(text: string): number {
     let length = 0;
     let currentLength = 0;
 

src/editor/operations.ts

@@ -17,6 +17,7 @@ limitations under the License.
 import Range from "./range";
 import { Part, Type } from "./parts";
 import { Formatting } from "../components/views/rooms/MessageComposerFormatBar";
+import { longestBacktickSequence } from './deserialize';
 
 /**
  * Some common queries and transformations on the editor model
@@ -182,11 +183,13 @@ export function formatRangeAsCode(range: Range): void {
     const hasBlockFormatting = (range.length > 0)
         && range.text.startsWith("```")
         && range.text.endsWith("```");
+    const hasBacktick = (range.text.includes("`"))
+        && !range.text.startsWith("`")
+        && !range.text.endsWith("`");
 
     const needsBlockFormatting = parts.some(p => p.type === Type.Newline);
 
     if (hasBlockFormatting) {
-        // Remove previously pushed backticks and new lines
         parts.shift();
         parts.pop();
         if (parts[0]?.text === "\n" && parts[parts.length - 1]?.text === "\n") {
@@ -205,8 +208,13 @@ export function formatRangeAsCode(range: Range): void {
             parts.push(partCreator.newline());
         }
     } else {
-        toggleInlineFormat(range, "`");
-        return;
+        if (hasBacktick) {
+            parts.unshift(partCreator.plain("`".repeat(longestBacktickSequence(range.text)+ 1)));
+            parts.push(partCreator.plain("`".repeat(longestBacktickSequence(range.text)+ 1)));
+        } else {
+            toggleInlineFormat(range, "`");
+            return;
+        }
     }
 
     replaceRangeAndExpandSelection(range, parts);
@@ -240,6 +248,7 @@ export function toggleInlineFormat(range: Range, prefix: string, suffix = prefix
     // compute paragraph [start, end] indexes
     const paragraphIndexes = [];
     let startIndex = 0;
+
     // start at i=2 because we look at i and up to two parts behind to detect paragraph breaks at their end
     for (let i = 2; i < parts.length; i++) {
         // paragraph breaks can be denoted in a multitude of ways,