Re: [PATCH] more winnt.el cleanup.

On Mon, May 18, 1998 at 02:46:14AM +0200, Hrvoje Niksic wrote: > * Never use char pointers for internal works. > > In most circumstances it is a mistake to use a `char *p' variable, and > increment it with p++, only to get Emchars from *p. The correct way > is to declare p as `Bufbyte *p', use INC_CHARPTR (p) to increment it, > and DEC_CHARPTR (p) to decrement it. Use set_charptr_emchar to set an > Emchar at that position. Danger Robinson :-) One has to remember that set_charptr_emchar write 1-4 bytes depending on the Emchar, while the size of the overwritten Emchar can be different. The net result is that you can't use this macro to change a character in the middle of a string. You can only append.