DOS/Windows-specific code: main.c

[Eli Zaretskii <eliz at is dot elta dot co dot il>]

    * main.c:

    #ifdef __CYGWIN__
    #include <windows.h>		/* for MAX_PATH */
    #include <sys/cygwin.h>		/* for cygwin32_conv_to_posix_path */
    #endif

See the next snippet.

    * main.c:captured_main()

      /* Read and execute $HOME/.gdbinit file, if it exists.  This is done
	 *before* all the command line arguments are processed; it sets
	 global parameters, which are independent of what file you are
	 debugging or what directory you are in.  */
    #ifdef __CYGWIN32__
      {
	char *tmp = getenv ("HOME");

	if (tmp != NULL)
	  {
	    homedir = (char *) alloca (MAX_PATH + 1);
	    cygwin32_conv_to_posix_path (tmp, homedir);
	  }
	else
	  homedir = NULL;
      }
    #else
      homedir = getenv ("HOME");
    #endif

What does cygwin32_conv_to_posix_path do?  Does it convert the
drive-letter braindamage to the /cygdrive/d/foo thingy?  If so, why is
that needed?  Doesn't Cygwin support the native Windows file names
with drive letters?

In any case, this could use FILENAME_MAX instead of MAX_PATH, and then
the previous snippet would not need <windows.h>, since stdio.h is
already included by defs.h.