Fix off-by-one error in processing of #ifdef lines

stesser · stesser · commit e0e29f9425bd · 2020-10-28T13:30:24.000Z
The convention in this program is to parse the line immediately starting
after the token (e.g. #defineA and #ifdefA define respectively look-up "A"),
and this commit restores this behavior instead of skipping an assumed
white-space character following #ifdef.

Reported by:	kevans
MFC after:	3 days
diff --git a/usr.bin/calendar/io.c b/usr.bin/calendar/io.c
@@ -213,7 +213,7 @@ token(char *line, FILE *out, bool *skip)
 	}
 
 	if (strncmp(line, "ifdef", 5) == 0) {
-		walk = line + 6;
+		walk = line + 5;
 		trimlr(&walk);
 
 		if (*walk == '\0') {

Original file line number	Diff line number	Diff line change
`@@ -213,7 +213,7 @@ token(char line, FILE out, bool *skip)`
`213`	`213`	`}`
`214`	`214`
`215`	`215`	`if (strncmp(line, "ifdef", 5) == 0) {`
`216`		`- walk = line + 6;`
	`216`	`+ walk = line + 5;`
`217`	`217`	`trimlr(&walk);`
`218`	`218`
`219`	`219`	`if (*walk == '\0') {`