bug#8163: 23.2; Feature request: dabbrev look at filenames or buffer names

[Lars Ingebrigtsen <larsi@gnus.org>]

"Ed Avis" <eda@waniasset.com> writes:

> Start emacs and start editing a file called abcdef:
>
> C-x C-f abcdef RET
>
> In that buffer type abcde and then press M-/ to run dabbrev-expand.
>
> Desired result: dabbrev looks at the buffer name (or the name of the
> file it is visiting) and uses that to complete the string to 'abcdef'.
> It could use the names of all open buffers as part of its pool.
>
> Current result: No dynamic expansion for 'abcde' found
>
> This would be useful in many programming languages where the filename
> usually matches the name of a class or function.  It is common to create
> the file first and start typing the code.

Makes sense to me.  I've now added this to Emacs 29.

-- 
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   bloggy blog: http://lars.ingebrigtsen.no