From d41f612da5d6624398f9ddd84369c67f150f246f Mon Sep 17 00:00:00 2001
From: Patrick McDermott <patrick.mcdermott@libiquity.com>
Date: Tue, 23 Apr 2019 12:33:35 -0400
Subject: substvars_max_depth: Convert to upper case

---
diff --git a/src/substvars.sh b/src/substvars.sh
index 38661c1..60d1402 100644
--- a/src/substvars.sh
+++ b/src/substvars.sh
@@ -18,7 +18,7 @@
 # along with the ProteanOS Development Kit.  If not, see
 # <http://www.gnu.org/licenses/>.
 
-substvars_max_depth=50
+SUBSTVARS_MAX_DEPTH=50
 
 set_substvar()
 {
@@ -83,7 +83,7 @@ substvars()
 			# side of the matched space.
 			depth=0
 		fi
-		if [ ${depth} -ge ${substvars_max_depth} ]; then
+		if [ ${depth} -ge ${SUBSTVARS_MAX_DEPTH} ]; then
 			# Warn of possible recursion.
 			warn "$(get_msg 'substvar_deep_nesting')"
 			return 1
--
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