f_substr: Write to stdout when no `-v var_to_set'

Fixes ``setvar: : bad variable name''
svn path=/head/; revision=295195
2016-02-03 03:03:04 +00:00 · 2016-02-03 03:03:04 +00:00 · 9e81c4fb73 · 2020-12-20 02:59:44 +00:00
commit 9e81c4fb73
parent 679f1eab00
1 changed files with 5 additions and 1 deletions
--- a/usr.sbin/bsdconfig/share/strings.subr
+++ b/usr.sbin/bsdconfig/share/strings.subr
@ -146,7 +146,11 @@ f_substr()
 		fi
 	done

-	setvar "$__var_to_set" "$__tmp"
+	if [ "$__var_to_set" ]; then
+		setvar "$__var_to_set" "$__tmp"
+	else
+		echo "$__tmp"
+	fi
 }

 # f_sprintf $var_to_set $format [$arguments ...]