Function parseListFlag

internal/cli/provider_cmd.go:528–557

parseListFlag interprets a value like "+a,b", "-x", "=a,b", or "a,b". When add is true (the flag is being parsed for `add`), the leading sigil is rejected because mutation operators only make sense on update.

(raw string, addMode bool)

// When add is true (the flag is being parsed for `add`), the leading sigil
// is rejected because mutation operators only make sense on update.
func parseListFlag(raw string, addMode bool) (providers.ListOp, []string, error) {
	if raw == "" {
		return providers.ListOpReplace, nil, nil
	}
	op := providers.ListOpReplace
	body := raw
	switch raw[0] {
	case '+':
		op = providers.ListOpAdd
		body = raw[1:]
	case '-':
		op = providers.ListOpRemove
		body = raw[1:]
	case '=':
		op = providers.ListOpReplace
		body = raw[1:]
	}
	if addMode && op != providers.ListOpReplace {
		return op, nil, errors.New("add does not accept +/- prefixes (use plain or '=' value)")
	}
	parts := strings.Split(body, ",")
	out := make([]string, 0, len(parts))
	for _, p := range parts {
		trimmed := strings.TrimSpace(p)
		if trimmed != "" {
			out = append(out, trimmed)
		}
	}
	return op, out, nil
}

func providersFileFromAPI(listed []appapi.Provider) providers.File {
	file := providers.File{Common: map[string]any{}, Endpoints: map[string]providers.Endpoint{}}