[tz] [PATCH 1/4] Fix comment (field 4) checks

[J William Piggott]

* checktab.awk: Now that tzselect uses both country and continent as
  criteria for region list building, checktab needs to do the same when
  testing zone tabs for comment (field 4) requirements.

Signed-off-by: J William Piggott <elseifthen at gmx.com>
---
 checktab.awk | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/checktab.awk b/checktab.awk
index 6c2e41b..bbf7ce9 100644
--- a/checktab.awk
+++ b/checktab.awk
@@ -62,6 +62,7 @@ BEGIN {
 		cc = cca[1]
 		coordinates = $2
 		tz = $3
+		continent = substr($3, 1, index($3, "/") - 1)
 		comments = $4
 		if (cc < cc0) {
 			printf "%s:%d: country code '%s' is out of order\n", \
@@ -76,8 +77,10 @@ BEGIN {
 		    cc = cca[i]
 		    cctz = cc tz
 		    cctztab[cctz] = 1
+		    ccct = cc continent
 		    if (cc2name[cc]) {
 			cc_used[cc]++
+			ccct_used[ccct]++
 		    } else {
 			printf "%s:%d: %s: unknown country code\n", \
 				zone_table, zone_NR, cc >>"/dev/stderr"
@@ -95,7 +98,9 @@ BEGIN {
 	for (cctz in cctztab) {
 		cc = substr (cctz, 1, 2)
 		tz = substr (cctz, 3)
-		if (1 < cc_used[cc]) {
+		continent = substr(tz, 1, index(tz, "/") - 1)
+		ccct = cc continent
+		if (1 < ccct_used[ccct]) {
 			comments_needed[tz] = cc
 		}
 	}