How to ignore or push back certain files when when auto-completing in wildmenu?

Question

When opening a file with :e, :vs or :sp, I generally don't want to open binary files or files with certain extensions like .class.

Is there a way to ignore files with certain extensions or MIME type (or put them at the end of the completion options) in the wildmenu auto-complete?

Answer 1

'wildignore' is a list of file patterns which be ignored for completing (among other things as well)

set wildignore+=*.class

'suffixes' is a list of file suffixes which will lower the priority of filename in completion

set suffixes+= class

For more help see:

:h 'wildignore'
:h 'suffixes'