aat

commit 73eecb05ef1671893e9d8a4cd1a49cc32ec7bd5e
parent 288f43b43a24f6a80a7d26a033d6c096877bf98b
Author: Jan Pobrislo <ccx@wpr.cz>
Date:   Thu, 17 Sep 2015 09:09:55 +0200

allow empty get() on nonexistent variable
Diffstat:
M
data.awk
 | 
5
++++-

1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/data.awk b/data.awk
@@ -136,11 +136,14 @@ function find(varname,   i, n, names, values, loopvar, looprow, prefix) {
 
 function get(varname) {
 	if(!find(varname)) {
+		if(ENVIRON["DATA_AWK_EMPTY_GET"]) {
+			return ""
+		}
 		print "error: undefined variable '"varname"'" >"/dev/stderr"
 		exit 1
 	}
 	if(DEBUG) {
-		print "get →" varname "← ⇒ →"found"←" >"/dev/stderr"
+		print "get →" varname "← = →"found"←" >"/dev/stderr"
 	}
 	return found
 }