[tz] [PROPOSED] Commentary fixes

[Paul Eggert]

* Makefile: Mention constraints on TZDIR_BASENAME.
* asctime.c: Remove obsolete comment, as zdump now uses snprintf.
---
 Makefile  | 1 +
 asctime.c | 3 ---
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 05b40bb..07f4f77 100644
--- a/Makefile
+++ b/Makefile
@@ -49,6 +49,7 @@ TOPDIR=		/usr/local
 # "Compiled" time zone information is placed in the "TZDIR" directory
 # (and subdirectories).
 # Use an absolute path name for TZDIR unless you're just testing the software.
+# TZDIR_BASENAME should not contain "/" and should not be ".", ".." or empty.
 
 TZDIR_BASENAME=	zoneinfo
 TZDIR=		$(TOPDIR)/etc/$(TZDIR_BASENAME)
diff --git a/asctime.c b/asctime.c
index 1613f78..de681ce 100644
--- a/asctime.c
+++ b/asctime.c
@@ -99,9 +99,6 @@ asctime_r(register const struct tm *timeptr, char *buf)
 	** (e.g., timeptr->tm_mday) when processing "%Y".
 	*/
 	strftime(year, sizeof year, "%Y", timeptr);
-	/*
-	** We avoid using snprintf since it's not available on all systems.
-	*/
 	sprintf(result,
 		((strlen(year) <= 4) ? ASCTIME_FMT : ASCTIME_FMT_B),
 		wn, mn,
-- 
2.9.4