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FvwmM4 man page

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FvwmM4(1)							     FvwmM4(1)




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-pro-
	      cessed 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, presum-
       ably a result of a  cosmic-ray or some such thing.



3rd Berkeley Distribution	  3 July 2001			     FvwmM4(1)


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