pub fn set_extra_header(extra: &mut Vec<u8>, name: &str, line: &[u8])Expand description
Replace every header block named name with line, or append line when no such block exists.
line must be a full header record (name SP value LF, plus any SP-prefixed continuation
lines and their trailing LFs) in the same encoding used in
crate::objects::CommitData::extra_headers / crate::objects::TagData::extra_headers.