SYMBOL INDEX (10 symbols across 1 files) FILE: gobooks/validator/main.go function main (line 18) | func main() { function extractSections (line 153) | func extractSections(lines []string) map[string]bool { function extractHeaders (line 164) | func extractHeaders(lines []string) map[string]bool { function toAnchor (line 187) | func toAnchor(s string) string { function extractTOCLinks (line 194) | func extractTOCLinks(lines []string) map[string]string { function extractBookBlocks (line 207) | func extractBookBlocks(lines []string) map[string]string { function extractCoverRefs (line 237) | func extractCoverRefs(lines []string) []string { function findUnlinkedCovers (line 255) | func findUnlinkedCovers(lines []string) []string { function truncate (line 270) | func truncate(s string, max int) string { function min (line 279) | func min(a, b int) int {