Introduce lim in all ttywrite() checks.

diff --git a/st.c b/st.c
index 900534b..a47f094 100644 (file)
--- a/st.c
+++ b/st.c
@@ -1522,11 +1522,11 @@ ttywrite(const char *s, size_t n)
                        lim = ttyread();
                if (FD_ISSET(cmdfd, &wfd)) {
                        /*
-                        * Only write 256 bytes at maximum. This seems to be a
-                        * reasonable value for a serial line. Bigger values
-                        * might clog the I/O.
+                        * Only write the bytes written by ttywrite() or the
+                        * default of 256. This seems to be a reasonable value
+                        * for a serial line. Bigger values might clog the I/O.
                         */
-                       if ((r = write(cmdfd, s, (n < 256)? n : 256)) < 0)
+                       if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
                                goto write_error;
                        if (r < n) {
                                /*