setting / binding completion-ignore-case

[Roland Winkler]

I have some problems using completion-ignore-case appropriately in
bibtex.el.

In bibtex-mode, depending on the kind of completion requested,
completion-ignore-case needs to be nil or t. How should bibtex-mode
choose this value? If the command requesting completion binds
completion-ignore-case, then choose-completion-delete-max-match
doesn't work properly because it does not remember the value of
completion-ignore-case. On the other hand, if bibtex-mode makes
completion-ignore-case buffer-local and sets its value,
choose-completion-delete-max-match works properly. But then
completing-read fails because binding completion-ignore-case is done
in the bibtex buffer before completing-read is called, i.e., it
affects only the buffer-local value. But the minibuffer used by
completing-read seems to use the global value of
completion-ignore-case.

Any suggestions? Thanks a lot,

Roland