Quotation marks don't auto close when preceeded by an underscore

[fGolke]

Description

When typing ", you get "|" in the document, but _" leads to _"| instead of _"|".
This annoyed me in markup mode, but it should probably apply to math mode too.

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[bendix4620]

Took me a while to get that | symbolizes the cursor position...

It applies to all modes. It also applies to $, but is not limited to underscores. In fact, afaict, any adjacent characters except braces and # prevent insertion of the closing delimiter.

However, typing " or $ in front of an existing # also inserts the closing delimiter, while it does not do that for braces:

|# input " => "|"#

vs.

|# input ( => (|#