fix(pytest): add "-c file"

Author: akinomyoga

completions/pytest

@@ -13,7 +13,7 @@ _pytest()
     local cur prev words cword split comp_args
     _comp_initialize -s -n : -- "$@" || return
 
-    local noargopts='!(-*|*[kmorpWn]*)'
+    local noargopts='!(-*|*[kmorpcWn]*)'
     # shellcheck disable=SC2254
     case $prev in
         --help | --maxfail | --report | --junit-prefix | --doctest-glob | \
@@ -57,7 +57,7 @@ _pytest()
             _filedir log
             return
             ;;
-        --ignore)
+        --ignore | -${noargopts}c)
             _filedir
             return
             ;;