parse gtf attributes

Mojo function 🡭

parse_gtf_attributes

fn def parse_gtf_attributes(span: Span[UInt8]) -> GtfAttributes

Parse GTF column 9: semicolon-separated ‘tag “value”’ pairs.

Extracts gene_id and transcript_id as first-class fields. All other attributes go into _extras. Supports:

• Quoted values with backslash escapes (Issue 5)
• Unquoted values such as exon_number 3 (Issue 3)
• Duplicate keys (all values stored; use get_all() to retrieve them)

Args:

• span (Span[UInt8])

Returns:

GtfAttributes

Raises: