--- a/help/en/hlp_eval.txt	Tue Nov 10 18:27:16 2009 +0200
+++ b/help/en/hlp_eval.txt	Tue Nov 10 19:36:54 2009 +0200
@@ -4,7 +4,6 @@
 Evaluates expression and executes result string as command.
 Expression evaluation rules:
 * all operators have the same precedence;
-* parenthesis searching will not take into account strings;
 * supported operators:
   . string concatenation
   + binary plus / string concatenation
@@ -20,9 +19,9 @@
 * numbers can be specified as plain decimal numbers, minus in front of digit will be recognized as a part of number;
 * mcabber variables can be specified by name, though only subset of possible names is suppoted:
   - variable must start from latin alphabetic symbol;
-  - inside of variable name also are allowed digits, - and _.
+  - inside of variable name also are allowed digits, - and _;
+* to enable parentheses in character strings current implementation ignores anything after extra closing paren - you may use this as a sort of comment...
 
 Example:
  /eval "echo 2 + 2 = " . (2+2)
- /eval "set ping_interval = " . (ping_interval + 1)
-Note: last example probably should use /let command.
+ /eval "set ping_interval = " . (ping_interval + 1)    ) this example probably should use /let command.

--- a/yaubil.c	Tue Nov 10 18:27:16 2009 +0200
+++ b/yaubil.c	Tue Nov 10 19:36:54 2009 +0200
@@ -472,9 +472,9 @@
 	g_free (value);
 }
 
-static value_t *process_expression (const char *str, gsize len)
+static value_t *process_expression (const char *str, gsize *len)
 {
-	const char *strend = str + len;
+	const char *strend = str + *len;
 	const char *p;
 	op_t       *op     = NULL;
 	int         state  = STATE_LVALUE;
@@ -484,7 +484,7 @@
 		.str_value = NULL,
 	};
 
-	for (p = str; *p && p < strend; ++p) {
+	for (p = str; *p && p < strend && *p != ')'; ++p) {
 		switch (state) {
 		case STATE_LVALUE:
 		case STATE_RVALUE:
@@ -585,48 +585,21 @@
 
 				} else if (*p == '(') {
 					
-					const char *e;
-
-					{
-						int      l        = 0;
-						gboolean finished = FALSE;
-						
-						// XXX maybe we should just pass end of line and let it return real length...
-						for (e = p + 1; e < strend; ++e) {
-							if (*e == '(')
-								++l;
-							else if (*e == ')') {
-								--l;
-								if (l < 0) {
-									finished = TRUE;
-									break;
-								}
-							}
-						}
-
-						if (!finished) {
-							scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "Error: Unmatched parenthesis.");
-							g_free (val.str_value);
-							return NULL;
-						}
+					gsize    len = strend - p - 1;
+					value_t *n   = process_expression (p + 1, &len);
+					
+					if (!n) {
+						scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "Error: Error in subexpression.");
+						g_free (val.str_value);
+						return NULL;
 					}
 
-					{
-						value_t *n = process_expression (p + 1, e - p - 1);
-						
-						if (!n) {
-							scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "Error: Error in subexpression.");
-							g_free (val.str_value);
-							return NULL;
-						}
+					rval.type      = n->type;
+					rval.int_value = n->int_value;
+					rval.str_value = g_strdup (n->str_value);
+					destroy_value (n);
 
-						rval.type      = n->type;
-						rval.int_value = n->int_value;
-						rval.str_value = g_strdup (n->str_value);
-						destroy_value (n);
-					}
-
-					p = e;
+					p += len + 1;
 
 				} else {
 					scr_LogPrint (LPRINT_NORMAL, MSGPREFIX "Error: unrecognized symbols.");
@@ -687,6 +660,7 @@
 	}
 
 	{ // return value
+		*len = p - str;
 		value_t *rval = g_new (value_t, 1);
 
 		rval->type      = val.type;
@@ -699,7 +673,8 @@
 
 static void do_eval (char *arg)
 {
-	value_t *val = process_expression (arg, strlen (arg));
+	gsize    len = strlen (arg);
+	value_t *val = process_expression (arg, &len);
 
 	if (!val) {
 		scr_LogPrint (LPRINT_NORMAL, "eval: Evaluation error.");
@@ -738,8 +713,11 @@
 		namelen = p + 1 - arg;
 	}
 
-	// evaluate expression
-	value = process_expression (val + 1, strlen (val + 1));
+	{ // evaluate expression
+		gsize len = strlen (val + 1);
+
+		value = process_expression (val + 1, &len);
+	}
 
 	if (!value) {
 		scr_LogPrint (LPRINT_NORMAL, "let: Evaluation error.");
@@ -767,7 +745,8 @@
 
 static void do_if (char *arg)
 {
-	value_t *val = process_expression (arg, strlen (arg));
+	gsize    len = strlen (arg);
+	value_t *val = process_expression (arg, &len);
 
 	if (!val) {
 		scr_LogPrint (LPRINT_NORMAL, "if: Evaluation error.");