Characters preceding start code not ignored

[thomas-brunel]

Hi,

Not sure if this is still relevant, but from the wikipedia page of the Intel hex file format it is mentioned that all characters preceding the start code of a record should be ignored, which is not the case as of today. I have done a modification on my fork to do this, but I wanted to know if this is still relevant before doing a PR.

[martinmroz]

Honestly I'm not 100% sure what folks are using this for but they sure do seem to be using it so of course I'd be more than happy to make the change and publish a new version. I've got a couple of changes landed since the last release was cut from helpful folks like yourself, so it's about time!

[chrysn]

A special case of this are "comments", which would be (completely ignored) lines that do not contain the start code at all.

Currently, if a file contains // some text lines, ihex users such as probe-rs-cli reject this with "missing start code ':'", whereas other ihex consumers srec_cat tolerate them.