Add various special purpose entry points

tools/completion/kitty.go

@@ -47,3 +47,28 @@ func complete_kitty(completions *Completions, word string, arg_num int) {
 		}, "")
 	}
 }
+
+func complete_plus_launch(completions *Completions, word string, arg_num int) {
+	if arg_num == 1 {
+		fnmatch_completer("Python scripts", CWD, "*.py")(completions, word, arg_num)
+		if strings.HasPrefix(word, ":") {
+			exes := complete_executables_in_path(word[1:])
+			mg := completions.add_match_group("Python scripts in PATH")
+			for _, exe := range exes {
+				mg.add_match(":" + exe)
+			}
+		}
+	} else {
+		fnmatch_completer("Files", CWD, "*")(completions, word, arg_num)
+	}
+}
+
+func complete_plus_runpy(completions *Completions, word string, arg_num int) {
+	if arg_num > 1 {
+		fnmatch_completer("Files", CWD, "*")(completions, word, arg_num)
+	}
+}
+
+func complete_plus_open(completions *Completions, word string, arg_num int) {
+	fnmatch_completer("Files", CWD, "*")(completions, word, arg_num)
+}

tools/completion/types.go

@@ -22,6 +22,12 @@ func (self *MatchGroup) add_match(word string, description ...string) *Match {
 	return &ans
 }
 
+func (self *MatchGroup) add_prefix_to_all_matches(prefix string) {
+	for _, m := range self.Matches {
+		m.Word = prefix + m.Word
+	}
+}
+
 type Completions struct {
 	Groups []*MatchGroup `json:"groups,omitempty"`
 
@@ -32,9 +38,7 @@ type Completions struct {
 
 func (self *Completions) add_prefix_to_all_matches(prefix string) {
 	for _, mg := range self.Groups {
-		for _, m := range mg.Matches {
-			m.Word = prefix + m.Word
-		}
+		mg.add_prefix_to_all_matches(prefix)
 	}
 }
 
@@ -77,6 +81,12 @@ type Command struct {
 	Subcommand_must_be_first        bool
 }
 
+func (self *Command) clone_options_from(other *Command) {
+	for _, opt := range other.Options {
+		self.Options = append(self.Options, opt)
+	}
+}
+
 func (self *Command) add_group(name string) *CommandGroup {
 	for _, g := range self.Groups {
 		if g.Title == name {