* Support mentioning filenames with spaces
Allows spaces to be escaped in mentions with \. Does not attempt more
comprehensive escape handling. (IMO a more structured representation or
moving to something like @[something complex] is probably a better long
term approach, but the scope of that seems problematic.
Adapted from 8955d45708.
Co-authored-by: Matt Rubens <mrubens@users.noreply.github.com>
* Older array creation to make check-types happier
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Co-authored-by: Matt Rubens <mrubens@users.noreply.github.com>