New functions made by dividing up read_char_menu_prompt.
(read_char): Call read_char_minibuffer_menu_prompt before the sit_for
if X menus are not going to be used.
(read_char_minibuf_menu_prompt): Correct access to keymaps for
menus when not using X menus. Only store character read in a keyboard
macro if it is not the menu help character.
stdout has been made binary. Start at the top of the screen since
the internal terminal otherwise will write "below the screen."
[MSDOS]: #include <dos.h> and <time.h>, but not <sys/ioctl.h>.
(read_avail_input) [MSDOS]: Work around `ioctl'. Also read through
dos_keyread for better keyboard support.
(interrupt_signal) [MSDOS]: Don't claim we can core dump.
(kbd_buffer_store_event): Cast a pointer to avoid a compiler warning.
(read_avail_input): Args to `kill' were backwards.
(kbd_buffer_get_event): If deleting last frame, call Fkill_emacs.
(modify_event_symbol): New arg NAME_ALIST.
Allow SYMBOL_TABLE to be an alist.
(Vvendor_key_alist): New variable.
(syms_of_keyboard): Initialize it.
(make_lispy_event): Handle vendor-specific keysyms.
(lispy_function_keys): Delete `remove' and th HP keysyms.
(read_avail_input): Turn O_NDELAY off on DGUX as on USG.
(init_callproc) [MSDOS]: Initialize binary-process.
[MSDOS]: Declare binary-process.
[MSDOS]: Include <fcntl.h>, <sys/stat.h>, <sys/param.h>,
and <errno.h> needed for the next changes.
(Fcall_process) [MSDOS]: Create temporary file for process output.
Run the subprocess using `run_msdos_command' instead of forking.
Arrange for cleanup to erase temporary file.
(Fcall_process) [not subprocesses]: Barf if zero buffer argument.
(call_process_cleanup) [MSDOS]: Close and erase temporary file
instead of the pid-stuff.
(Fcall_process_region) [MSDOS]: Create temporary file in $TMP or $TEMP.
(Fchild_setup) [MSDOS]: #if 0, as it is not used.
(make_hdr) [MSDOS]: Cast a pointer for bzero.
(write_segment) [EFAULT]: Check for before using.
(adjust_lnnoptrs) [MSDOS]: Use provided descriptor.
(adjust_lnnoptrs): Return 0 if ok.
<sys/param.h> needed for the following changes, but not <sys/ioctl.h>
(discard_tty_input) [MSDOS]: Do it by reading till no more keys available.
(init_baud_rate) [MSDOS]: Assume highest possible speed.
(sys_suspend) [MSDOS]: Save default directory. Call via system, not via fork.
(emacs_get_tty, emacs_set_tty) [MSDOS]: Don't do anything.
(init_sys_modes) [MSDOS]: Use raw mode.
(get_frame_size) [MSDOS]: Get from bios.
(reset_sys_modes) [MSDOS]: Back to cooked mode.
(start_of_text) [MSDOS]: Reference _tstart.
(select) [MSDOS]: Don't use signals, use sleeping.
(init_sys_modes) [MSDOS]: Initialize internal terminal.
the following changes.
(Ffile_name_directory, Fexpand_file_name) [FILE_SYSTEM_CASE]: Apply
case conversion if defined.
(Ffile_name_directory, Ffile_name_nondirectory, file_name_as_directory,
directory_file_name, Fexpand_file_name, Fsubstitute_in_file_name,
expand_and_dir_to_file) [MSDOS]: Drive letter support.
(Fexpand_file_name) [MSDOS]: Support for multiple default directories.
(Ffile_writeable_p) [MSDOS]: Don't call access with file name ending in slash.
(Finsert_file_contents) [MSDOS]: Determine file type by name (call
find-buffer-file-type) and change CR+LF to LF if it is a text file.
(Fwrite_region) [MSDOS]: Use text/binary mode as specified by buffer_file_type.
(syms_of_fileio) [MSDOS]: Set Qfind_buffer_file_type.
(Fsubstitute_in_file_name) [MSDOS]: Ignore case in environtment variable.
(Fdirectory_files, file_name_completion): Use it.
[MSDOS]: #include <dirent.h> instead of <sys/dir.h>. Avoid
some external definitions.
(Ffile_attributes) [MSDOS]: Set execute bits from file name.
(Ffile_name_all_completions) [FILE_SYSTEM_CASE]: Convert
case of file name as as indicated by conditional.
