Current source viewer has very limited capabilities, e.g.: it's not possible to search a string, which can be useful when very long messages are to be inspected.
Configured external editors are usually plenty of capabilities, so would be nice an option, hidden if no general usefulness is perceived, to enable opening the source message with the configured external editor instead of the source viewer.
Opening with an editor adds some issues to source viewing, like the possibility of editing the raw message and render it unusable, so opening in read-only mode it's probably required when this option is enabled.
Thanks in advance,
You can just create and use an Action for that.
(In reply to comment #1)
> You can just create and use an Action for that.
Yes, but not a simple one. As the configuration of external editor is already parsed in in memory, seems easier (and faster) to add a checkbox and reuse existing C code than invoking several processes with an action to achieve the same result.