# Structural insertion keeps anchored comments attached to their code
exec semedit insert --file api/anchors.go --placement before_symbol --target Keep --source 'func AddedBefore() {}'
exec semedit insert --file api/anchors.go --placement after_symbol --target Target --source 'func AddedAfter() {}'
cmp api/anchors.go want/api/anchors.go
exec semedit insert-case --file api/handler.go --in-function Handle --discriminator value --placement before_default --case 'case "added": return "added"'
cmp api/handler.go want/api/handler.go
exec go test ./...

-- go.mod --
module example.com/test
go 1.23

-- api/anchors.go --
package api

// Keep documentation on Keep.
func Keep() {}

func Target() {} // Keep this trailing comment.

func Last() {}

-- want/api/anchors.go --
package api

func AddedBefore() {}

// Keep documentation on Keep.
func Keep() {}

func Target() {} // Keep this trailing comment.

func AddedAfter() {}

func Last() {}
-- api/handler.go --
package api

func Handle(value string) string {
	switch value {
	case "keep":
		return "keep"
	// Keep this comment on the default case.
	default:
		return "default"
	}
}

-- want/api/handler.go --
package api

func Handle(value string) string {
	switch value {
	case "keep":
		return "keep"
	case "added":
		return "added"
	// Keep this comment on the default case.
	default:
		return "default"
	}
}