Make usage of `memchr` more robust
Make usage of `memchr` more robust

Use an iterator adaptor which is tasked with keeping track of indices
for us so we don't have to indice juggle elsewhere.

nipunn1313/cargo,vojtechkral/cargo,eminence/cargo,rustyhorde/cargo,tshepang/cargo,rust-lang/cargo,vojtechkral/cargo,nipunn1313/cargo,tsurai/cargo,tsurai/cargo,rustyhorde/cargo,nipunn1313/cargo,rustyhorde/cargo,tshepang/cargo,rust-lang/cargo,eminence/cargo,vojtechkral/cargo,nipunn1313/cargo,eminence/cargo,tsurai/cargo,vojtechkral/cargo,eminence/cargo,rust-lang/cargo,tshepang/cargo,rustyhorde/cargo,rust-lang/cargo,tsurai/cargo,tshepang/cargo,tsurai/cargo