Date: Mon, 31 Jan 1994 08:57:31 +0100
From: terra AT diku DOT dk
To: ulrich AT lab1 DOT psy DOT univie DOT ac DOT at
Cc: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: Xlib emulation


Hi!

I'm quite impressed with your X emulation, but I have a couple of
things you should take a look at.

1.  The function `XSetWMProtocols' should be in the library.  It is used
    by Emacs 19.22

2.  The keyboard driver does not know the difference between the `left'
    key and `kp-4': if I press `S-left', it is read as `S-kp-4'.

3.  The keyboard driver does not recognize `F11' and `F12'.  The
    remapping in "events.c" seems wrong -- it maps them to keys
    133 and 134, not to 95 and 96 as in the xmodmaps.

4.  On my DK keyboard, I have a key (between L-Ctrl and L-Alt) labeled
	>
	<\
    (upper half=shift, right half=altgr).  This key is read as `F3'.
    The keys `kp-divide' and `kp-enter' are not recognized.

5.  The `BackSpace' key is read as `delete'.  Perhaps this is a general
    X-problem.

6.  If it is at all possible, you should include libX11.a in the
    distribution; it takes quite a while to gather all the sources
    and to compile it.

7.  The instructions for generating "xfonts.dir" in the "readme" file are
    obviously wrong; the file name for grep is missing.  Also one should
    be warned that a unix-style grep is needed, or specifically that
    Borland's grep should not be used.

8.  The instructions for calling fntool are obsolete.  It should be
    "fntool -itype fnt -otype dir *.fnt"

9.  I see no reasonable way to specify that key number 34 generates the
    character 134 (lower case `a' with circle) and other pc characters.  It
    seems logical and simple to do this by allowing number specifications
    (hex and/or decimal) in the xmodmaps; this would be a change to the file
    "XStrKeysym.c"  One cannot solve this by using funny keysyms as there
    are no keysyms in the range 0x80 to 0x9f inclusive.

10. Recognition of keys relies entirely on scancodes and not on keycodes.
    This is not the best solution for keys that have no X-like name, e.g.,
    letters, digits, and a few other white keys.  This would mean automatic
    adaption to different keyboards (thereby solving the above a-circle
    problem), and reduce the problem of having a Swahili-based default
    xmodmap.  (Sorry, I just couldn't resist it :-)

11. The scancode remapping in "events.c" is incomplete.  Notice the
    irregular steps in this table of additions:
      Key 0x72 is C-sysreq
      Key 0x82 is M--
      Key 0x82 is M-=
      Key 0x8e is C-kp-minus
      Key 0x8f is C-kp-5
      Key 0x90 is C-kp-plus
      Key 0x94 is C-tab
      Key 0x95 is C-kp-divide
      Key 0x96 is C-kp-multiply
      Key 0x97 is M-home
      Key 0x98 is M-up
      Key 0x99 is M-pgup
      Key 0x9b is M-left
      Key 0x9d is M-right
      Key 0x9f is M-end
      Key 0xa0 is M-down
      Key 0xa1 is M-pgdn
      Key 0xa2 is M-insert
      Key 0xa3 is M-delete
      Key 0xa4 is M-kp-divide
      Key 0xa5 is M-tab
      Key 0xa6 is M-enter

Morten Welinder
terra AT diku DOT dk