simplification de la regexep is_ascii/is_utf8 (plantait chez James)

ecrire/inc_charsets.php

@@ -507,21 +507,19 @@ function bom_utf8($texte) {
 // http://us2.php.net/manual/fr/function.mb-detect-encoding.php#50087
 // http://w3.org/International/questions/qa-forms-utf-8.html
 function is_utf8($string) {
-	return preg_match('%^(?:
-	[\x09\x0A\x0D\x20-\x7E]            # ASCII
-	| [\xC2-\xDF][\x80-\xBF]            # non-overlong 2-byte
-	|  \xE0[\xA0-\xBF][\x80-\xBF]        # excluding overlongs
-	| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}  # straight 3-byte
-	|  \xED[\x80-\x9F][\x80-\xBF]        # excluding surrogates
-	|  \xF0[\x90-\xBF][\x80-\xBF]{2}    # planes 1-3
-	| [\xF1-\xF3][\x80-\xBF]{3}          # planes 4-15
-	|  \xF4[\x80-\x8F][\x80-\xBF]{2}    # plane 16
-	)*$%xs', $string);
+	return preg_match(',^(?:'
+	.  '[\x09\x0A\x0D\x20-\x7E]'            # ASCII
+	. '|[\xC2-\xDF][\x80-\xBF]'             # non-overlong 2-byte
+	. '|\xE0[\xA0-\xBF][\x80-\xBF]'         # excluding overlongs
+	. '|[\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}'  # straight 3-byte
+	. '|\xED[\x80-\x9F][\x80-\xBF]'         # excluding surrogates
+	. '|\xF0[\x90-\xBF][\x80-\xBF]{2}'      # planes 1-3
+	. '|[\xF1-\xF3][\x80-\xBF]{3}'          # planes 4-15
+	. '|\xF4[\x80-\x8F][\x80-\xBF]{2}'      # plane 16
+	. ')*$,s', $string);
 }
 function is_ascii($string) {
-	return preg_match('%^(?:
-	[\x09\x0A\x0D\x20-\x7E]            # ASCII
-	)*$%xs', $string);
+	return preg_match(',^[\x09\x0A\x0D\x20-\x7E]*$,s', $string);
 }
 
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