lint: Fix SC2295 violations

Author: ixti

share/ruby-install/ruby-install.sh

@@ -87,7 +87,7 @@ function parse_ruby()
 	case "$string" in
 		*-[0-9]*)
 			ruby="${string%-[0-9]*}"
-			ruby_version="${string#$ruby-}"
+			ruby_version="${string#"$ruby"-}"
 			;;
 		[0-9]*)
 			ruby="ruby"

share/ruby-install/util.sh

@@ -12,7 +12,7 @@ function fetch()
 
 	while IFS="" read -r line; do
 		if [[ "$line" == "$key:"* ]]; then
-			echo "${line##$key:*([[:space:]])}"
+			echo "${line##"$key":*([[:space:]])}"
 		fi
 	done < "$file"
 }