support longer input.

lib_mysqludf_stem.cc

@@ -172,7 +172,7 @@ char *stem_word(UDF_INIT *initid, UDF_ARGS *args, char *result, unsigned long *l
 			if (b != c) {
 				stemmed = sb_stemmer_stem(stemmer, (const sb_symbol*)b, c-b);
 				len = strlen((char *)stemmed);
-				if (*length + len > 254) break;
+				if (*length + len >= 32767) break;
 				
 				if (r != result) {
 					*r = ' ';
@@ -190,4 +190,4 @@ char *stem_word(UDF_INIT *initid, UDF_ARGS *args, char *result, unsigned long *l
 	}
 
 	return result;
-}
\ No newline at end of file
+}

tests/stem_word.result

@@ -18,3 +18,6 @@ Xxx Yyys Zzzer
 SELECT stem_word("english", "a");
 stem_word("english", "a")
 a
+SELECT stem_word("english", "read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading") as long_stem_result;
+long_stem_result
+read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read read

tests/stem_word.test

@@ -21,3 +21,4 @@ SELECT stem_word("dutch", "deuren boekjes;stuiter stuiteren auto's");
 SELECT stem_word("english", "cars#bars#opening");
 SELECT stem_word("xyz", "Xxx Yyys Zzzer");
 SELECT stem_word("english", "a");
+SELECT stem_word("english", "read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading read reads reading") as long_stem_result;