Function tokenizeSchedulerInput

cli/scheduler_command.go:822–882

tokenizeSchedulerInput splits a /schedule, /wait, or /jobs argument string into tokens while respecting single- and double-quoted spans so that flag values like --do "/run X Y" or --tag 'k=v with space' arrive as a single token. Backslash escapes the next character inside a quoted span; outside quot

(input string)

// Returns an error only when a quote is left unterminated, so callers
// can surface a precise message to the user.
func tokenizeSchedulerInput(input string) ([]string, error) {
	var (
		out     []string
		buf     strings.Builder
		inQuote rune // 0 = none, '"' or '\''
		escaped bool
		hasTok  bool
	)
	flush := func() {
		if hasTok {
			out = append(out, buf.String())
			buf.Reset()
			hasTok = false
		}
	}
	for _, r := range input {
		if escaped {
			buf.WriteRune(r)
			hasTok = true
			escaped = false
			continue
		}
		if inQuote != 0 {
			if r == '\\' && inQuote == '"' {
				// Backslash only escapes within double quotes; inside
				// single quotes it is literal (POSIX-ish).
				escaped = true
				continue
			}
			if r == inQuote {
				inQuote = 0
				// An empty "" or '' still counts as a token.
				hasTok = true
				continue
			}
			buf.WriteRune(r)
			hasTok = true
			continue
		}
		switch r {
		case '"', '\'':
			inQuote = r
			hasTok = true
		case '\\':
			escaped = true
		case ' ', '\t', '\n', '\r':
			flush()
		default:
			buf.WriteRune(r)
			hasTok = true
		}
	}
	if inQuote != 0 {
		return nil, fmt.Errorf("unterminated %c-quoted argument", inQuote)
	}
	if escaped {
		return nil, fmt.Errorf("trailing backslash with nothing to escape")
	}