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FVWM - Man page - FvwmM4

FvwmM4

Section: User Commands (1)
Updated: 3 July 2001
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NAME

FvwmM4 - the FVWM M4 pre-processor

SYNOPSIS

FvwmM4 is spawned by fvwm, so no command line invocation will work.

DESCRIPTION

When called, this module will attempt to have M4 pre-process the file specified in its invocation, and then have fvwm read the resulting file.

INVOCATION

FvwmM4 can be invoked by inserting the line 'FvwmM4' in the .fvwm2rc file. It can also be called from a menu or mouse binding. If the user wants his entire .fvwm2rc file pre-processed with FvwmM4, then fvwm should be invoked as:

fvwm2 -cmd "FvwmM4 .fvwm2rc"

Note that the argument to the option "-cmd" should be enclosed in quotes, and no other quoting should be used. For example, a typical invocation might be:

fvwm2 -cmd "FvwmM4 -m4-squote { -m4-equote } .fvwm2rc"

Some options can be specified on the command line:

-m4-prefix

I think this makes all the m4 directives require the prefix "m4_".

-m4-prefix-defines

Causes built-in defines to be prefixed with "m4_" (i.e., m4_HOME is defined instead of HOME, etc.)

-m4opt option

Lets you pass an option to the m4 program. Not really needed as any unknown options will be passed on automatically.

-m4-squote character

Lets you change the m4 start-of-quote character to character.

-m4-equote character

Lets you change the m4 end-of-quote character to character.

-m4prog name

Instead of invoking "m4", fvwm will invoke name.

-outfile filename

Instead of creating a random unique name for the temporary file for the preprocessed rc file, this option will let you specify the name of the temporary file it will create. Please note that FvwmM4 will attempt to remove this file before writing to it, so don't point it at anything important even if it has read-only protection.

-debug

Causes the temporary file create by m4 to be retained. This file is usually called "/tmp/fvwmrcXXXXXX"

-lock

If you want to use this option you need to start FvwmM4 with ModuleSynchronous. This option causes fvwm to wait that the pre-process finish and that FvwmM4 asks fvwm to Read the pre-processed file before continuing. This may be useful at startup if you use a session manager as Gnome. Also, this is useful if you want to process and run a Form in a fvwm function.

-noread

Causes the pre-processed file to be not read by fvwm. Useful to pre-process a FvwmScript script with FvwmM4.

CONFIGURATION OPTIONS

FvwmM4 defines some values for use in the pre-processor file:

TWM_TYPE: Always set to "fvwm".
SERVERHOST: The name of the machine running the X Server.
CLIENTHOST: The name of the machine running fvwm.
HOSTNAME: The hostname of the machine running fvwm. Generally the same as CLIENTHOST.
OSTYPE: The operating system for CLIENTHOST.
USER: The name of the person running fvwm.
HOME: The home directory of the person running fvwm.
VERSION: The X11 version.
REVISION: The X11 revision number.
VENDOR: The X server vendor.
RELEASE: The X server release number.
SCREEN: The screen number.
WIDTH: The screen width in pixels.
HEIGHT: The screen height in pixels.
X_RESOLUTION: Some distance/pixel measurement for the horizontal direction, I think.
Y_RESOLUTION: Some distance/pixel measurement for the vertical direction, I think.
PLANES: Number of color planes for the X server display
BITS_PER_RGB: Number of bits in each rgb triplet.
CLASS: The X11 default visual class, e.g. PseudoColor.
COLOR: Yes or No, Yes if the default visual class is neither StaticGrey or GreyScale.
FVWM_CLASS: The visual class that fvwm is using, e.g. TrueColor.
FVWM_COLOR: Yes or No, Yes if the FVWM_CLASS is neither StaticGrey or GreyScale.
FVWM_VERSION: The fvwm version number, ie 2.0
OPTIONS: Some combination of SHAPE, XPM, NO_SAVEUNDERS, and M4, as defined in configure.h at compile time.
FVWM_MODULEDIR: The directory where fvwm looks for .fvwmrc and modules by default, as determined at compile time.
FVWM_USERDIR: The value of $FVWM_USERDIR.
SESSION_MANAGER: The value of $SESSION_MANAGER. Undefined if this variable is not set.

EXAMPLE PROLOG

define(TWM_TYPE,``fvwm'')dnl
define(SERVERHOST,``spx20'')dnl
define(CLIENTHOST,``grumpy'')dnl
define(HOSTNAME,``grumpy'')dnl
define(OSTYPE,``SunOS'')dnl
define(USER,``nation'')dnl
define(HOME,``/local/homes/dsp/nation'')dnl
define(VERSION,``11'')dnl
define(REVISION,``0'')dnl
define(VENDOR,``HDS human designed systems, inc. (2.1.2-D)'')dnl
define(RELEASE,``4'')dnl
define(SCREEN,``0'')dnl
define(WIDTH,``1280'')dnl
define(HEIGHT,``1024'')dnl
define(X_RESOLUTION,``3938'')dnl
define(Y_RESOLUTION,``3938'')dnl
define(PLANES,``8'')dnl
define(BITS_PER_RGB,``8'')dnl
define(CLASS,``PseudoColor'')dnl
define(COLOR,``Yes'')dnl
define(FVWM_VERSION,``1.24l'')dnl
define(OPTIONS,``SHAPE XPM M4 '')dnl
define(FVWM_MODULEDIR,``/local/homes/dsp/nation/modules'')dnl
define(FVWM_USERDIR,``/local/homes/dsp/nation/.fvwm2rc.d'')dnl
define(SESSION_MANAGER,``local/grumpy:/tmp/.ICE-unix/440,tcp/spx20:1025'')dnl

AUTHORS

FvwmM4 is the result of a random bit mutation on a hard disk, presumably a result of a cosmic-ray or some such thing.

This document was created by man2html, using the manual pages.
Time: 17:47:37 GMT, May 30, 2003

Last modified on December 07, 2004