Variable: completion-ignored-extensions
completion-ignored-extensions is a customizable variable defined in
dired.c.
Value
(".o" "~" ".bin" ".lbin" ".so" ".a" ".ln" ".blg" ".bbl" ".elc" ".lof"
".glo" ".idx" ".lot" ".svn/" ".hg/" ".git/" ".bzr/" "CVS/" "_darcs/"
"_MTN/" ".fmt" ".tfm" ".class" ".fas" ".lib" ".mem" ".x86f" ".sparcf"
".dfsl" ".pfsl" ".d64fsl" ".p64fsl" ".lx64fsl" ".lx32fsl" ".dx64fsl"
".dx32fsl" ".fx64fsl" ".fx32fsl" ".sx64fsl" ".sx32fsl" ".wx64fsl"
".wx32fsl" ".fasl" ".ufsl" ".fsl" ".dxl" ".lo" ".la" ".gmo" ".mo"
".toc" ".aux" ".cp" ".fn" ".ky" ".pg" ".tp" ".cps" ".fns" ".kys"
".pgs" ".tps" ".vrs" ".pyc" ".pyo")
Documentation
Completion ignores file names ending in any string in this list.
It does not ignore them if all possible completions end in one of these strings or when displaying a list of completions. It ignores directory names if they match any string in this list which ends in a slash.
Probably introduced at or before Emacs version 22.1.
Source Code
// Defined in /usr/src/emacs/src/dired.c
DEFVAR_LISP ("completion-ignored-extensions", Vcompletion_ignored_extensions,
doc: /* Completion ignores file names ending in any string in this list.
It does not ignore them if all possible completions end in one of
these strings or when displaying a list of completions.
It ignores directory names if they match any string in this list which
ends in a slash. */);