[syslinux] comment syntax

[H. Peter Anvin]

On 08/31/2010 09:03 AM, Ferenc Wagner wrote:
>>
>> I haven't looked at the code at all.... but my _guess_ is that in
>> moving to C from asm, a stock parser was used?  C pre-processor for C
>> code? Just pointing out that diglyphs are sometimes interpreted, and
>> it would be _a_ (not necessarily _the_) reason for requiring the
>> trailing space on '# '
> 
> The config file parsing is still done in assembly:
> 
> getcommand:
> .find:
>                 call skipspace          ; Skip leading whitespace
>                 jz .eof                 ; End of file
>                 jc .find                ; End of line: try again
> 
>                 ; Do this explicitly so #foo is treated as a comment
>                 cmp al,'#'              ; Leading hash mark -> comment
>                 je .skipline
> 
> Which contradicts the documentation, as the actual code does not require
> a space after the #.  Testing confirms this.

Yes, it *used* to be implemented that # was simply a keyword (which
would ignore the rest of the line.)  However, too many people got
confused despite the documentation, so I implemented it ad hoc.

	-hpa