escape newlines in contact names/status messages

src/misc_tools.h

@@ -88,7 +88,10 @@ int qsort_strcasecmp_hlpr(const void *str1, const void *str2);
       - cannot start with a space
       - must not contain a forward slash (for logfile naming purposes)
       - must not contain contiguous spaces */
-int valid_nick(char *nick);
+int valid_nick(const char *nick);
+
+/* Converts all newline chars to spaces (use for strings that should be contained to a single line) */
+void escape_newline_str(char *str, int len);
 
 /* gets base file name from path or original file name if no path is supplied */
 void get_file_name(char *namebuf, int bufsize, const char *pathname);