Scripting columns Post: 302407827

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wml::std::tags

wml::std::tags(3)						     EN Tools							 wml::std::tags(3)

NAME

       wml::std::tags - Standard Support Tags

SYNOPSIS

	#use wml::std::tags

	#   Pass 2: advanced if constructs
	<ifdef varname thenval elseval>

	#   Pass 3: support tag
	<perl> ... </perl>
	<say> ... </say>

	#   Pass 4: support tag
	<m4> ... </m4>

	#   Pass 4: symbols
	<symbol name value>
	<symbol name undef>

	#   Pass 5: diversions
	<dump NAME>
	<enter NAME> ... <leave>
	<divert NAME> ... </divert>

	#   Pass 6: support tag
	<asubst ...> ... </asubst>

	#   Client-Side JavaScript: support tag
	<javascript [version=..] [language=..]
		    [type=..] [src=...] [defer] [nohead] [nolang]>
	...
	</javascript>

	#   Resynchronize line numbers for more accurate pass 3 warnings
	<sync-lines>

DESCRIPTION

       This include file defines some standard support tags one needs all the time.  All tags are self-explanatory and briefly mentioned in
       wml_intro(1), except the last two which are described below.

   "<javascript>":
       This tag was primarily a shorthand for "<script type="text/javascript" language="JavaScript">" but it has evolved.  If the "<head>" tag is
       defined and is a complex macro, e.g. when calling "wml::std::page", then Javascript code is automatically passed to this macro and should
       be diverted to the HEAD section of HTML documents.  This diversion preserve lang slices in multi-lingual documents.  Those features may be
       disabled by the ``nohead'' and ``nolang'' attributes.

   "<sync-lines>":
       WML tries to print information on input file and line numbers when warnings or errors are reported in passes 2 and 3.  Some special
       sentences containing file names and line numbers are inserted during pass 1. So pass 2 have an accurate knowledge of where warnings appear
       in input file.  But it also filters it without preserving lines, so after pass 2 information is almost unusable.  By putting "<sync-lines>"
       in input file, it forces pass 2 to resynchronize information on line numbers.  So for debugging pass 3, it could be of some help to insert
       "<sync-lines>" before ePerl code.

AUTHORS

	Ralf S. Engelschall
	rse@engelschall.com
	www.engelschall.com

	Denis Barbier
	barbier@engelschall.com

REQUIRES

	Internal: P1, P2, P3, P4, P6
	External: --

SEE ALSO

       wml(1)

EN Tools							    2014-04-16							 wml::std::tags(3)