be more benevolent on symbol names

debug.lsp

@@ -13,7 +13,12 @@
 
 (print (usql "select to_string(datetime, '%d.%m.%Y %H:%M:%S'), symbol, prev_close, open, price, change, change_prct from prices"))
 
+(define var "promena var")
+(define var2 "promena var2")
+(print var)
+(print var2)
 
+ (print (+ "select min(adjClose), max(adjClose) from history_prices where symbol = '" var "'"))
 
 ;; (print (usql "create table data (ticker varchar(8), price float null)"))
 ;; (usql "load data from '/Users/vaclavt/Library/Mobile Documents/com~apple~CloudDocs/Development/usql/data.csv')")

ml.cpp

@@ -853,7 +853,7 @@ MlValue parse(std::string &s, int &ptr) {
 	} else if (is_symbol(s[ptr])) {
 		// If this is a string
 		int n = 0;
-		while (is_symbol(s[ptr + n])) {
+		while (is_symbol(s[ptr + n]) || isdigit(s[ptr + n])) {
 			n++;
 		}