Bugfix/markdown parsing (#2002)

Removed replacing of newlines in already parsed HTML documents

Signed-off-by: Leon Schmidt <mail@leon.wtf>

Co-authored-by: Benoit Marty <benoitm@matrix.org>

CHANGES.md

@@ -10,6 +10,7 @@ Improvements 🙌:
 
 Bugfix 🐛:
  - Display name not shown under Settings/General (#1926)
+ - Wrong markdown parsing (#350, #1375, #1939, #1982)
  - Words containing my name should not trigger notifications (#1781)
  - Fix changing language issue
  - Fix FontSize issue (#1483, #1787)

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/send/MarkdownParser.kt

@@ -33,7 +33,7 @@ internal class MarkdownParser @Inject constructor(
         private val textContentRenderer: TextContentRenderer
 ) {
 
-    private val mdSpecialChars = "[`_\\-\\*>\\.\\[\\]#~]".toRegex()
+    private val mdSpecialChars = "[`_\\-*>.\\[\\]#~]".toRegex()
 
     fun parse(text: String): TextContent {
         // If no special char are detected, just return plain text
@@ -54,8 +54,7 @@ internal class MarkdownParser @Inject constructor(
         return if (isFormattedTextPertinent(text, cleanHtmlText)) {
             // According to https://matrix.org/docs/spec/client_server/latest#m-room-message-msgtypes:
             // The plain text version of the HTML should be provided in the body.
-            val plainText = textContentRenderer.render(document)
-            TextContent(plainText, cleanHtmlText.postTreatment())
+            TextContent(text, cleanHtmlText.trim())
         } else {
             TextContent(text)
         }
@@ -63,15 +62,4 @@ internal class MarkdownParser @Inject constructor(
 
     private fun isFormattedTextPertinent(text: String, htmlText: String?) =
             text != htmlText && htmlText != "<p>${text.trim()}</p>\n"
-
-    /**
-     * The parser makes some mistakes, so deal with it here
-     */
-    private fun String.postTreatment(): String {
-        return this
-                // Remove extra space before and after the content
-                .trim()
-                // There is no need to include new line in an html-like source
-                .replace("\n", "")
-    }
 }