Remove RealWaitForChar and mch_new_shellsize

The last occurrence of `RealWaitForChar` was replaced by the `os_microdelay`
function. `mch_new_shellsize` had an empty body, so there seems to be no reason
for keeping it around

src/os_unix.c

@@ -64,16 +64,6 @@
 static int selinux_enabled = -1;
 #endif
 
-/*
- * Use this prototype for select, some include files have a wrong prototype
- */
-# undef select
-
-
-#if defined(HAVE_SELECT)
-extern int select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
-#endif
-
 static int get_x11_title(int);
 static int get_x11_icon(int);
 
@@ -82,14 +72,6 @@ static int did_set_title = FALSE;
 static char_u   *oldicon = NULL;
 static int did_set_icon = FALSE;
 
-#ifdef HAVE_UNION_WAIT
-typedef union wait waitstatus;
-#else
-typedef int waitstatus;
-#endif
-
-static int RealWaitForChar(int, long, int *);
-
 static int have_wildcard(int, char_u **);
 static int have_dollars(int, char_u **);
 
@@ -103,7 +85,7 @@ void mch_write(char_u *s, int len)
 {
   ignored = (int)write(1, (char *)s, len);
   if (p_wd)             /* Unix is too fast, slow down a bit more */
-    RealWaitForChar(read_cmd_fd, p_wd, NULL);
+    os_microdelay(p_wd, 0);
 }
 
 /*
@@ -1025,120 +1007,6 @@ void mch_set_shellsize()
   }
 }
 
-/*
- * Rows and/or Columns has changed.
- */
-void mch_new_shellsize()
-{
-  /* Nothing to do. */
-}
-
-/*
- * Wait "msec" msec until a character is available from file descriptor "fd".
- * "msec" == 0 will check for characters once.
- * "msec" == -1 will block until a character is available.
- * When a GUI is being used, this will not be used for input -- webb
- * Or when a Linux GPM mouse event is waiting.
- */
-static int RealWaitForChar(fd, msec, check_for_gpm)
-int fd;
-long msec;
-int         *check_for_gpm;
-{
-  int ret;
-
-#ifdef MAY_LOOP
-  for (;; )
-#endif
-  {
-#ifdef MAY_LOOP
-    int finished = TRUE;                 /* default is to 'loop' just once */
-#endif
-#ifndef HAVE_SELECT
-    struct pollfd fds[6];
-    int nfd;
-    int towait = (int)msec;
-
-    fds[0].fd = fd;
-    fds[0].events = POLLIN;
-    nfd = 1;
-
-
-    ret = poll(fds, nfd, towait);
-
-
-
-#else /* HAVE_SELECT */
-
-    struct timeval tv;
-    struct timeval  *tvp;
-    fd_set rfds, efds;
-    int maxfd;
-    long towait = msec;
-
-
-    if (towait >= 0) {
-      tv.tv_sec = towait / 1000;
-      tv.tv_usec = (towait % 1000) * (1000000/1000);
-      tvp = &tv;
-    } else
-      tvp = NULL;
-
-    /*
-     * Select on ready for reading and exceptional condition (end of file).
-     */
-select_eintr:
-    FD_ZERO(&rfds);
-    FD_ZERO(&efds);
-    FD_SET(fd, &rfds);
-    /* For QNX select() always returns 1 if this is set.  Why? */
-    FD_SET(fd, &efds);
-    maxfd = fd;
-
-
-    ret = select(maxfd + 1, &rfds, NULL, &efds, tvp);
-# ifdef EINTR
-    if (ret == -1 && errno == EINTR) {
-      /* Check whether window has been resized, EINTR may be caused by
-       * SIGWINCH. FIXME this is broken for now */
-
-      /* Interrupted by a signal, need to try again.  We ignore msec
-       * here, because we do want to check even after a timeout if
-       * characters are available.  Needed for reading output of an
-       * external command after the process has finished. */
-      goto select_eintr;
-    }
-# endif
-
-
-#endif /* HAVE_SELECT */
-
-#ifdef MAY_LOOP
-    if (finished || msec == 0)
-      break;
-
-    /* We're going to loop around again, find out for how long */
-    if (msec > 0) {
-# ifdef USE_START_TV
-      struct timeval mtv;
-
-      /* Compute remaining wait time. */
-      gettimeofday(&mtv, NULL);
-      msec -= (mtv.tv_sec - start_tv.tv_sec) * 1000L
-              + (mtv.tv_usec - start_tv.tv_usec) / 1000L;
-# else
-      /* Guess we got interrupted halfway. */
-      msec = msec / 2;
-# endif
-      if (msec <= 0)
-        break;          /* waited long enough */
-    }
-#endif
-  }
-
-  return ret > 0;
-}
-
 /*
  * mch_expand_wildcards() - this code does wild-card pattern matching using
  * the shell

src/os_unix.h

@@ -37,7 +37,6 @@ void check_mouse_termcode(void);
 int mch_screenmode(char_u *arg);
 int mch_get_shellsize(void);
 void mch_set_shellsize(void);
-void mch_new_shellsize(void);
 int mch_expand_wildcards(int num_pat, char_u **pat, int *num_file,
                          char_u ***file,
                          int flags);

src/term.c

@@ -2465,8 +2465,6 @@ void win_new_shellsize(void)
   static int old_Rows = 0;
   static int old_Columns = 0;
 
-  if (old_Rows != Rows || old_Columns != Columns)
-    ui_new_shellsize();
   if (old_Rows != Rows) {
     /* if 'window' uses the whole screen, keep it using that */
     if (p_window == old_Rows - 1 || old_Rows == 0)

src/ui.c

@@ -237,24 +237,11 @@ int ui_get_shellsize(void)
  * new size.  If this is not possible, it will adjust Rows and Columns.
  */
 void 
-ui_set_shellsize (
-    int mustset             /* set by the user */
-)
+ui_set_shellsize(int mustset)
 {
   mch_set_shellsize();
 }
 
-/*
- * Called when Rows and/or Columns changed.  Adjust scroll region and mouse
- * region.
- */
-void ui_new_shellsize(void)
-{
-  if (full_screen && !exiting) {
-    mch_new_shellsize();
-  }
-}
-
 void ui_breakcheck(void)
 {
   os_breakcheck();

src/ui.h

@@ -10,7 +10,6 @@ void ui_suspend(void);
 void suspend_shell(void);
 int ui_get_shellsize(void);
 void ui_set_shellsize(int mustset);
-void ui_new_shellsize(void);
 void ui_breakcheck(void);
 void clip_init(int can_use);
 void clip_update_selection(VimClipboard *clip);