File up_one_line_message_length.patch of Package mcabber
--- mcabber/screen.h 2014-05-08 20:45:48.000000000 +0400 +++ mcabber/screen.h.new 2015-03-06 21:09:18.393919336 +0300 @@ -26,7 +26,7 @@ #include <mcabber/logprint.h> #include <mcabber/roster.h> -#define INPUTLINE_LENGTH 1024 +#define INPUTLINE_LENGTH 16384 // Only used in screen.c; this is the maximum line number // in a multi-line message. Should be < 1000