Edit option (#1447)

* add func to parse html to editor input

* add  plain to html input function

* re-construct markdown

* fix missing return

* fix falsy condition

* fix reading href instead of src of emoji

* add message editor - WIP

* fix plain to editor input func

* add save edit message functionality

* show edited event source code

* focus message input on after editing message

* use del tag for strike-through instead of s

* prevent autocomplete from re-opening after esc

* scroll out of view msg editor in view

* handle up arrow edit

* handle scroll to message editor without effect

* revert prev commit: effect run after editor render

* ignore relation event from editable

* allow data-md tag for del and em in sanitize html

* prevent edit without changes

* ignore previous reply when replying to msg

* fix up arrow edit not working sometime

src/app/utils/markdown.ts

@@ -83,7 +83,7 @@ const StrikeRule: MDRule = {
   match: (text) => text.match(STRIKE_REG_1),
   html: (parse, match) => {
     const [, g1] = match;
-    return `<s data-md="${STRIKE_MD_1}">${parse(g1)}</s>`;
+    return `<del data-md="${STRIKE_MD_1}">${parse(g1)}</del>`;
   },
 };