feat(inotifywait): generate exclude filenames prefixed by @

completions/inotifywait

@@ -41,6 +41,21 @@ _comp_cmd_inotifywait()
         return
     fi
 
+    if [[ $cur == @* ]]; then
+        # TODO: Or another way is to add -P to _comp_compgen, automatically
+        # arrange `-c "${cur#$prefix}"`, and other processing to filenames are
+        # performed before prefixing `-P "$prefix"`.
+        # TODO: Also, I think there are many similar cases in the codebase.
+        # ./completions/7z:31:                _comp_compgen -c "${cur#*@}" -- -P"${opt}${cur%%@*}@" -f
+        # ./completions/upgradepkg:18:        _comp_compgen -- -P "$prev%" -f -X "!*.@(t[bgxl]z)" || nofiles=set
+        # If we extend -P usage to others, there are even more cases where "-c
+        # cur" is adjusted at the same time.
+        local files
+        _comp_compgen -v files -c "${cur:1}" filedir -f &&
+            _comp_compgen -R -- -W '"${files[@]}"' -P @ &&
+            return 0
+    fi
+
     _comp_compgen_filedir
 } &&
     complete -F _comp_cmd_inotifywait inotifywait inotifywatch

test/t/test_inotifywait.py

@@ -23,3 +23,11 @@ def test_4(self, completion):
 
         """
         assert "ab/" in completion
+
+    @pytest.mark.complete("inotifywait @a", cwd="_filedir")
+    def test_5(self, completion):
+        """Test for the specification of the exclude filenames, which
+        has the form `@filename`.
+
+        """
+        assert "@ab/" in completion