Perl grammars look awesome. There's a parser for Rust that allows parsing is somewhat similar style:<p><a href="https://github.com/Geal/gif.rs/blob/master/src/parser.rs" rel="nofollow">https://github.com/Geal/gif.rs/blob/master/src/parser.rs</a>
Perhaps it's a bit silly, but it amused me that this line: "<a byte that contains an header>" made me ask whether the author was French. A very quick search for his name comes up with predominantly French (language, at least) results, so I'm comfortable enough leaving it at that.
For those wondering, the japanese text means "sword" and is an unused sprite in the Link to the Past.<p>Source: <a href="https://tcrf.net/The_Legend_of_Zelda:_A_Link_to_the_Past#Sword_Text" rel="nofollow">https://tcrf.net/The_Legend_of_Zelda:_A_Link_to_the_Past#Swo...</a>
Is A Link to the Past officially known as "Zelda 3" in any region? I remember having a guide for ALttP back in the day where a Nintendo representative emphatically stated that ALttP is <i>not</i> Zelda 3, as it is a prequel and does not feature the same Link that is present in Zelda's I and II.