Parse a custom messages file (TSV format compatible with Java EPUBCheck).
Format: one override per line, tab-separated: ID\tSEVERITY Lines starting with # are comments. A header line starting with "id" is skipped.
ID\tSEVERITY
ACC-004\tWARNINGACC-005\tWARNINGRSC-008\tSUPPRESSED Copy
ACC-004\tWARNINGACC-005\tWARNINGRSC-008\tSUPPRESSED
Parse a custom messages file (TSV format compatible with Java EPUBCheck).
Format: one override per line, tab-separated:
ID\tSEVERITYLines starting with # are comments. A header line starting with "id" is skipped.