GitLab

This removes code that has been obsolete since around 1990.
* admin/CPP-DEFINES (HAVE_SETPGID, HAVE_SETSID, SETPGRP_RELEASES_CTTY):
Remove; obsolete.
* configure.ac (setpgid, setsid): Assume their existence.
(AC_FUNC_GETPGRP, SETPGRP_RELEASES_CTTY): Remove; obsolete.
* src/callproc.c (Fcall_process):
* src/emacs.c (main):
* src/process.c (create_process):
* src/term.c (dissociate_if_controlling_tty):
Assume setsid exists.
* src/callproc.c (child_setup): Assume setpgid exists and behaves as
per POSIX.1-1988 or later.
* src/conf_post.h (setpgid) [!HAVE_SETPGID]: Remove.
* src/emacs.c (shut_down_emacs):
* src/sysdep.c (sys_suspend, init_foreground_group):
Assume getpgrp behaves as per POSIX.1-1998 or later.
* src/msdos.c (setpgrp): Remove.
(tcgetpgrp, setpgid, setsid): New functions.
* src/systty.h (EMACS_GETPGRP): Remove.  All callers now use getpgrp.
* src/term.c (no_controlling_tty): Remove; unused.
* src/w32proc.c (setpgrp): Remove.
(setsid, tcgetpgrp): New functions.

Fixes: debbugs:12800

* dispnew.c (update_frame_1): Remove hack for terminals slower
than 2400 bps, which throttled Emacs by having it sleep.  This
code hasn't worked since at least 2007, when the multi-tty stuff
was added, and anyway those old terminals are long dead.
* systty.h (EMACS_OUTQSIZE): Remove; unused.  The macro isn't used even
without the dispnew.c change, as dispnew.c doesn't include systty.h.

The code that dealt with SIGIO was crufty and confusing, e.g., it
played tricks like "#undef SIGIO" but these tricks were not used
consistently.  Simplify mostly by not #undeffing standard symbols,
e.g., use "defined USABLE_SIGIO" (our symbol, which we can define
or not as we please) rather than "defined SIGIO" (standard symbol
that we probably shouldn't #undef).
* configure.ac (NO_TERMIO, BROKEN_FIONREAD, BROKEN_SIGAIO)
(BROKEN_SIGPOLL, BROKEN_SIGPTY): Remove.
(USABLE_FIONREAD, USABLE_SIGIO): New symbols.  All uses of
'defined SIGIO' replaced with 'defined USABLE_SIGIO', with no need
to #undef SIGIO now (which was error-prone).  Likewise, all uses
of 'defined FIONREAD' replaced with 'defined USABLE_FIONREAD'.
* src/admin/CPP_DEFINES (BROKEN_SIGAIO, BROKEN_SIGIO, BROKEN_SIGPOLL)
(BROKEN_SIGPTY, NO_TERMIO): Remove.
* src/conf_post.h [USG5_4]: Do not include <sys/wait.h> here.
Modules that need it can include it.
[USG5_4 && emacs]: Likewise, do not include the streams stuff here.
* src/dispextern.h (ignore_sigio): New decl.
* src/emacs.c (shut_down_emacs): Invoke unrequest_sigio
unconditionally, since it's now a no-op if !USABLE_SIGIO.
* src/emacs.c (shut_down_emacs):
* src/keyboard.c (kbd_buffer_store_event_hold):
Use ignore_sigio rather than invoking 'signal' directly.
* src/keyboard.c (USABLE_FIONREAD && USG5_4): Include <sys/filio.h>,
for FIONREAD.
(FIONREAD, SIGIO): Do not #undef.
(tty_read_avail_input): Use #error rather than a syntax error.
* src/process.c [USG5_4]: Include <sys/stream.h> and <sys/stropts.h>,
for I_PIPE, used by SETUP_SLAVE_PTY.
(DATAGRAM_SOCKETS): Simplify defn, based on USABLE_FIONREAD.
* src/sysdep.c (croak): Remove; no longer needed.  This bit of
temporary code, with Fred N. Fish's comment that it's temporary,
has been in Emacs since at least 1992!
(init_sigio, reset_sigio, request_sigio, unrequest_sigio):
Arrange for them to be no-ops in all cases when ! USABLE_SIGIO.
* src/syssignal.h (croak): Remove decl.
(SIGIO, SIGPOO, SIGAIO, SIGPTY): Do not #undef; that's too fragile.
* src/systty.h [!NO_TERMIO]: Do not include <termio.h>; no longer needed
now that we're termios-only.
(FIONREAD, ASYNC) [BROKEN_FIONREAD]: Do not #undef.
* src/term.c (dissociate_if_controlling_tty): Use #error rather than
a run-time error.

Fixes: debbugs:12408

* configure.ac (FLOAT_CHECK_DOMAIN): Comment fix (Bug#12327).
* src/floatfns.c: Comment fix.
* src/lisp.h (force_auto_save_soon): Declare regardless of SIGDANGER.
SIGDANGER might not be in scope so "#ifdef SIGDANGER" is not right,
and anyway the declaration is harmless even if SIGDANGER is not defined.
* src/syssignal.h (SIGIO): Also #undef if (! defined FIONREAD ||
defined BROKEN_FIONREAD).  systty.h formerly did this, but other
source files not surprisingly expected syssignal.h to define, or
not define, SIGIO, and it's cleaner to do it that way, for consistency.
Include <sys/ioctl.h>, for FIONREAD.
* src/systty.h (SIGIO): Do not #undef here; it's now syssignal.h's job.
This eliminates a problem whereby other files mysteriously had
to include "syssignal.h" before including "systty.h" if they
wanted to use "#ifdef SIGIO".

(emacs_get_tty, emacs_set_tty, old_fcntl_flags, old_fcntl_owner):
Now static.
(sigprocmask_set, full_mask): Remove; unused.
(wait_debugging): Mark as visible.
* syssignal.h (SIGFULLMASK, full_mask): Remove decls.
* systty.h (emacs_get_tty, emacs_set_tty): Remove decls.

* systty.h: ... to here, so that they can be checked.

* configure.in <AC_CHECK_HEADERS>: Remove sys/ioctl.h.
* src/xterm.c:
* src/systty.h:
* src/sound.c: Include <sys/ioctl.h> unconditionally.

* systty.h (EMACS_GET_TTY_PGRP, EMACS_SET_TTY_PGRP, EMACS_GET_TTY)
(EMACS_SET_TTY): Remove unneeded abstraction, instead inline the
definition in all uses.
(EMACS_TTY_TABS_OK): Remove, it has a single user.
* src/sysdep.c (discard_tty_input, child_setup_tty)
(init_sys_modes, tabs_safe_p, reset_sys_modes):
* src/emacs.c (shut_down_emacs):
* src/callproc.c (child_setup):
* src/term.c (dissociate_if_controlling_tty): Inline removed macros.

All non-MSDOS non-WINDOWSNT platforms define HAVE_TERMIOS, so
HAVE_TERMIO code is obsolete.
Replace HAVE_TERMIOS conditionals with !DOS_NT.
* src/systty.h: Do not define HAVE_TCATTR.
Remove HAVE_TERMIO, HAVE_LTCHARS and HAVE_TCHARS code.
Do not define EMACS_HAVE_TTY_PGRP.  Only define
EMACS_GET_TTY_PGRP for !DOS_NT.
* src/sysdep.c: Include sysselect.h unconditionally.  Do not include
sys/ioctl.h and termios.h, systty.h does it.  Use
HAVE_SYS_UTSNAME_H instead of USG as an include guard.
(init_baud_rate): Remove HAVE_TERMIO code.
(child_setup_tty): Remove HAVE_TERMIO code.
(emacs_get_tty, emacs_set_tty): Remove HAVE_TERMIO, HAVE_TCHARS
and HAVE_LTCHARS code.  Use !DOS_NT instead of HAVE_TCATTR.
(new_ltchars, new_tchars): Remove, unused.
(init_sys_modes): Remove HAVE_TERMIO, HAVE_TCHARS and HAVE_LTCHARS
code.  Remove special casing for __mips__, it was a no-op.  Remove
HAVE_TCATTR conditional, it is implied by HAVE_TERMIOS.
(init_sys_modes): Remove HPUX special case.
* src/process.c: Include stdlib.h unconditionally.  Do not include
fcntl.h, systty.h does it.  Remove conditional code for
HAVE_SERIAL, it is always true.
(process_send_signal): Remove HAVE_TERMIOS conditional, it's
always true when SIGNALS_VIA_CHARACTERS is true.
(Fcontinue_process, Fprocess_send_eof): Simplify conditionals:
!WINDOWSNT means HAVE_TERMIOS.
(create_process): Remove HAVE_TERMIOS, it's inside a HAVE_PTYS
conditional, which is true for all HAVE_TERMIOS systems.
* src/keyboard.c (init_keyboard): Do not use HAVE_TERMIO, use !DOS_NT
instead of HAVE_TERMIOS.
* src/emacs.c (shut_down_emacs): Use !defined DOS_NT instead of
EMACS_HAVE_TTY_PGRP.
* src/callproc.c (child_setup): Move EMACS_SET_TTY_PGRP use to the
non-MSDOS, non-WINDOWSNT code, it's only defined for such systems
anyway.

* xterm.c (INCLUDED_FCNTL):
* callproc.c (INCLUDED_FCNTL):
* alloc.c (INCLUDED_FCNTL):
* systty.h (INCLUDED_FCNTL): Remove all uses, not needed anymore.
(emacs_get_tty, emacs_set_tty): Declare unconditionally.

* s/hpux10-20.h (NEED_BSDTTY): Remove.
* s/aix4-2.h (NEED_UNISTD_H): Remove.
* systty.h: Simplify conditionals for including <sys/bsdtty.h>,
<sys/ptyio.h> and <unistd.h>.

comments to #ifdefs.

* xfns.c:
* termcap.c:
* term.c:
* syswait.h:
* systty.h:
* systime.h:
* syssignal.h:
* sysdep.c:
* process.h:
* process.c:
* print.c:
* ndir.h:
* lread.c:
* keyboard.c:
* getpagesize.h:
* floatfns.c:
* fileio.c:
* emacs.c:
* doc.c:
* dispnew.c:
* dired.c:
* data.c:
* callproc.c:
* buffer.c:
* README:
* Makefile.in:
* s/template.h:
* s/msdos.h:
* m/vax.h: Remove VMS support.
* s/vms.h:
* vlimit.h:
* uaf.h:
* temacs.opt:
* param.h:
* ioctl.h: Remove file.

* descrip.mms:
* compile.com: Remove file.
* Create.c: Remove VMS support.

* message.el (Module):

* gnus-start.el (Module):

* gnus-registry.el (Module):

* textmodes/texinfmt.el:
* nxml/nxml-enc.el:
* mail/feedmail.el:
* international/mule.el:
* international/latexenc.el:
* emulation/viper-util.el:
* emulation/viper-init.el:
* emulation/viper-ex.el:
* emacs-lisp/bytecomp.el:
* version.el:
* subr.el:
* startup.el:
* sort.el:
* shadowfile.el:
* recentf.el:
* printing.el:
* paths.el:
* minibuffer.el:
* ls-lisp.el:
* loadup.el:
* hippie-exp.el:
* finder.el:
* files.el:
* ediff-util.el:
* ediff-ptch.el:
* ediff-init.el:
* ediff-diff.el:
* dired.el:
* dired-aux.el:
* cus-edit.el:
* bindings.el:
* arc-mode.el:
* add-log.el: Remove VMS support.
* obsolete/vmsproc.el:
* obsolete/vms-pmail.el:
* obsolete/vms-patch.el: Remove file.

* etags.c:
* emacsclient.c: Remove VMS support.

* termcap.src: Remove file.
* README:
* PROBLEMS:
* MACHINES: Remove VMS info.

* ediff.texi: Remove VMS support.

* os.texi:
* intro.texi:
* files.texi: Remove VMS support.

* emacs.texi: Remove VMS support.

* make-dist:
* README: Remove VMS support.
* vms: Remove directory.

BSD_TERMIOS, unused.

* sysdep.c: Remove reference to DGUX.
(closedir): Remove reference to BROKEN_CLOSEDIR, unused.

* config.in: Regenerate.

* configure.in (DO_BLOCK_INPUT): Remove, unused.

* s/ms-w32.h: Remove boilerplate comments.
(fcloseall, fgetchar, flushall, fputchar, getw, putw): Remove, unused.

* s/gnu-linux.h (TERM): Remove support.
(HAVE_SYSVIPC): Remove, unused.
(A_TEXT_OFFSET, A_TEXT_SEEK, ADJUST_EXEC_HEADER): Remove, not used
for this system.

* process.c: Remove support for IRIS, unused.
Remove support for TERM, not relevant anymore.

* unexalpha.c (DEFAULT_ENTRY_ADDRESS): Remove, replace the only
used with the definition.

* s/aix4-2.h (static): Do not undef.

* m/ibmrs6000.h: Remove code depending on USG5_4, this file is
only used on Aix.
(HAVE_SYSVIPC): Remove, unused.

* m/hp800.h (CANNOT_DUMP): Do not undef.

* m/alpha.h: Fix comment.

* s/usg5-4.h (HAVE_SYSVIPC): Remove, unused.
(USG_SHARED_LIBRARIES): Remove, only used in unexec.c which is not
used by this configuration.
* emacs.c: Remove code depending on USG_SHARED_LIBRARIES.
* unexec.c: Remove code depending on HPUX and
USG_SHARED_LIBRARIES, not used with this file.  Remove code
depending on IRIS, unused.  Remove if 0-ed code.

* s/vms.h: Use __GNUC__ instead of _GNUC_.

* m/macppc.h:
* m/alpha.h: Use GNU_LINUX instead of LINUX.  Reorganize conditionals.

* m/ibms390x.h (XINT, XUINT): Don't define, same as the default
(SPECIAL_EMACS_INT):
* m/ia64.h (SPECIAL_EMACS_INT):
* m/amdx86-64.h (SPECIAL_EMACS_INT):
* s/gnu.h (NLIST_STRUCT):
* aix4-2.h (X11R5_INHIBIT_I18N):
* s/gnu-linux.h (LINUX):
* s/msdos.h (HAVE_FACES):
* s/ms-w32.h (HAVE_FACES): Don't define, unused.

* systty.h:
* sysdep.c (setup_pty): Don't depend on SYSV_PTYS, it is not used
anymore.

* src/sysdep.c
* src/systty.h:
* src/m/ibmrs6000.h:
* src/m/iris4d.h:
* src/s/aix4-2.h:
* src/s/freebsd.h:
* src/s/gnu-linux.h:
* src/s/hpux10-20.h:
* src/s/hpux11.h:
* src/s/netbsd.h:
* src/s/sol2-3.h:
* src/s/sol2-4.h:
* src/s/sol2.h:
* src/s/usg5-4.h:
* src/s/vms.h: Remove references to unused variables.

* m/ews4800.h:
* m/hp9000s300.h:
* m/ibm370aix.h:
* m/mips-siemens.h:
* m/ncr386.h:
* m/next.h:
* m/pmax.h:
* m/powerpcle.h:
* m/tandem-s2.h:
* s/386bsd.h:
* s/bsd386.h:
* s/bsd4-1.h:
* s/bsd4-2.h:
* s/bsdos2-1.h:
* s/bsdos2.h:
* s/bsdos3.h:
* s/bsdos4.h:
* s/nextstep.h:
* s/ultrix4-3.h:
* s/usg5-0.h:
* s/usg5-2-2.h:
* s/usg5-2.h:
* s/usg5-4-3.h:
* s/ux4800.h:
* s/uxpds.h:
* s/uxpv.h: Remove support for obsolete systems.
* s/hpux.h, s/hpux10.h, s/hpux8.h, s/hpux9.h, s/hpux9shr.h:
Remove, insert contents in s/hpux-10.20.h
* s/aix3-1.h, s/aix3-2-5.h, s/aix3-2.h, s/aix4-1.h, s/aix4.h:
Remove, insert contents in s/aix-4.2.h
* s/usg5-3.h: Remove, insert contents in s/usg5-4.h.
* s/bsd4-3.h: Rename to ..
* s/bsd-common.h: ... this.
* src/data.c:
* src/doc.c:
* src/ecrt0.c:
* src/emacs.c:
* src/fileio.c:
* src/floatfns.c:
* src/keyboard.c:
* src/mem-limits.h:
* src/print.c:
* src/process.c:
* src/sysdep.c:
* src/syssignal.h:
* src/systty.h:
* src/syswait.h:
* src/term.c:
* src/unexec.c:
* src/unexelf.c:
* src/unexhp9k800.c:
* src/m/hp800.h:
* src/m/ibmrs6000.h:
* src/m/mips.h:
* src/m/vax.h:
* src/s/darwin.h:
* src/s/freebsd.h:
* src/s/gnu.h:
* src/s/ms-w32.h:
* src/s/msdos.h:
* src/s/netbsd.h:
* src/s/template.h: Remove references to obsolete variables.

* Makefile.in: Add dependencies for all unexec files.
(admindir): Remove unused variable.
(UNEXEC_SRC): Remove references.

* config.nt: Remove reference to UNEXEC_SRC.

* lwlib.c: Remove references to obsolete variables.

* fakemail.c: Remove references to obsolete variables.

* os.texi: Remove references to obsolete systems.

* configure.in:
* configure: Remove references to obsolete systems.

dealing with obsolete variables.

* fakemail.c (MAIL_PROGRAM_NAME): Remove unused conditional.
(main): Replace MAIL_PROGRAM_NAME with its value.

* src/Makefile.in:
* src/emacs.c:
* src/gmalloc.c:
* src/keyboard.c:
* src/lisp.h:
* src/m/ibm370aix.h:
* src/process.c:
* src/regex.c:
* src/s/hpux.h:
* src/sysdep.c:
* src/sysselect.h:
* src/systty.h:
* src/unexec.c:
* src/w32term.c:
* src/xsmfns.c:
* src/xterm.c: Remove code that deals with obsolete variables.

* s/msdos.h (DONT_NEED_ENVIRON): Don't define.

* ecrt0.c: Replace the DONT_NEED_ENVIRON test with MSDOS test,
nothing else needs it anymore.

* make-docfile.c: Remove reference to symbols defined by systems
not supported anymore: MAC_OS8, XENIX and STRIDE.

* (src/m/mips.h):
* (src/m/intel386.h):
* callproc.c:
* config.in:
* ecrt0.c:
* emacs.c:
* fileio.c:
* frame.c:
* getpagesize.h:
* keyboard.c:
* lread.c:
* process.c:
* puresize.h:
* sysdep.c:
* systty.h:
* syswait.h:
* unexec.c:
* xdisp.c:
* alloc.c: Remove code containing references to symbols defined by
unsupported systems.

2001).