[syslinux] extlinux 6.03 serial console not responding to input

[Patrick Masotta]

>>>
 I'm not sure what to say about that.  My point is that each individual command
 should check for errors in its arguments.  The code is obviously already
 present to parse these directives.  The nightmare is that there's no
 error checking anywhere!  Perhaps it can't be fixed all at once, but the first step
 is to provide a facility for reporting errors.  Then the error checks could be
 added incrementally over time.  I agree that it's more difficult to write
 software that checks for errors, but nobody said it should be easy.
 
 Regards,
 Andy
<<<

The code for parsing "well conformed" parameters sure is there, but the code
for detecting "badly conformed ones" not only is way more complex but also 
impacts certain syslinux constraints.
As I see it we'd need a regular expression parser, but I do not think i.e. pxelinux.0
(real mode <64KB app) could hold one... probably including it within some of its 
loadable c32 modules...

I agree config error checking would be a big plus but at the end of the day 
the file is mainly edited by techy guys then not a huge deal.
The documentation should mention only the currently supported formats though.

Best,
Patrick