Re: .fmt files missing in speedbar

[Stephen Berman]

On Fri, 23 Jun 2023 12:28:44 -0500 jm@pub.pink wrote:

> In emacs -Q I evaluate:
>
>     (add-to-list 'auto-mode-alist '("\\.fmt\\'" . html-mode))
>     (setq
>      speedbar-directory-unshown-regexp "^\(\.\.*$\)\'"
>      speedbar-show-unknown-files t)
>
> but browsing a directory in the speedbar containing ‘file.fmt’ files
> appears empty. Changing the extension to ‘.FMT’ makes it appear. In fact
> I cannot find any other extension that causes a file to not appear; e.g.
> ‘.file.ext’, ‘file.bonkers’, ‘file.♑’, etc. all show up.
>
> What am I missing here?

Files with extension .fmt are matched by speedbar-file-unshown-regexp,
whose doc string says: "Regexp matching files we don’t want displayed in
a speedbar buffer.  It is generated from the variable
‘completion-ignored-extensions’."

Steve Berman