[Webkit-unassigned] [Bug 220831] New: Web Inspector: Unhide hidden characters (second)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220831

            Bug ID: 220831
           Summary: Web Inspector: Unhide hidden characters (second)
           Product: WebKit
           Version: Safari 14
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ebrahim at gnu.org
                CC: inspector-bugzilla-changes at group.apple.com

This feature was actually implemented on Bug 93888 and then removed on Web Inspector UI revamp landed after Blink's fork so I am filling another issue as a request for revival of the work has been done there inside WebKit!

My request originally there,

> It would be nice if inspector could make hidden characters (like ‎ ‏ ‌ ‍   ...) visible and show them to web developer for better debugging.
> You can see list of hidden characters on http://getfirebug.com/developer/api/firebug1.6X/symbols/src/content_firebug_lib.js.html line 2186 to 2194.

After the fork I've filed https://crbug.com/463642 and https://crbug.com/460044 against Chrome so the list eventually ended up to be https://source.chromium.org/chromium/chromium/src/+/master:third_party/devtools-frontend/src/front_end/elements/ElementsTreeOutline.js;l=1679?q=MappedCharToEntity&ss=chromium which I think it is safe to use the updated here instead.

I'll try to send a patch about this (actually it is as easy as https://pastebin.com/1hVMRLD3 ) however others are also welcomed if I happened to forget about this.

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