stringizing

[Norman Diamond]

In article <14888 at darkstar.ucsc.edu> daniel at terra.ucsc.edu (Daniel Edelson) writes:
>	#define  str(x) #x
>		printf("%s\n", str(  hello\t\n\vworld\n\n));
>Is the output from this program supposed to be:
>	hello world

Section 2.1.1.2, page 6 lines 35-36 in the Dec. 1988 draft:
  Whether each nonempty sequence of white-space characters other than newline
  is retained or replaced by one space character is implementation-defined.
[This is before preprocessing.]

Therefore, the output can be either (with two leading spaces):
  hello\t\n\vworld\n\n\n
or (with one leading space and two imbedded spaces):
 hello \n world\n\n\n
(including, in each case, the last \n from the printf format string).

However, it cannot be (regardless of the number of leading spaces) just:
 hello world\n
--
Norman Diamond       diamond at tkov50.enet.dec.com
If this were the company's opinion, I wouldn't be allowed to post it.