Reading lexer.c, in order to find out what's causing me problems
on my PowerMac, I came across this snippet, and I'd like to point
out that it is not reliable:
case '\r':
p++;
if (*p != '\n') // if CR stands
by itself
endOfLine();
continue; // skip white
space
case '\n':
p++;
endOfLine();
continue; // skip white
space
-The problem is that on some hosts,
\r gives you the character code 13, while \n gives you the
character code 10,
on other hosts,
\r gives you the character code 10, while \n gives you the
character code 13.
This is crazy, yes, but in order to be sure, that things will
always work, I suggest always using hexadecimal numbers.
This is why picture formats, such as PNG and GIF do not specify
their identifier as ASCII characters but in hex-codes.
PPM is an image format, that's supposed to be portable, but
unfortunately, they did not know about this problem. This causes
some platforms to write PPM formats, that can not be read on
other platforms.
Usually, I prefer using enum or #define to create constants that
translate to hexadecimal numbers.
