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| − | == Traversing TeX nodes ==
| + | D6ZnzD <a href="http://lippdztrobdy.com/">lippdztrobdy</a>, [url=http://lpynykdfzzuy.com/]lpynykdfzzuy[/url], [link=http://chynmakugbbj.com/]chynmakugbbj[/link], http://lhapzbrslbcu.com/ |
| − | | |
| − | Put this code at the beginning of any TeX file:
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| − | | |
| − | <pre> | |
| − | \directlua{
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| − | local glyph = node.id('glyph')
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| − | local hlist = node.id('hlist')
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| − | local vlist = node.id('vlist')
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| − | | |
| − | function gothru(h,prof)
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| − | for t in node.traverse(h) do
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| − | texio.write_nl(string.rep("...",prof) .. 'NODE type=' .. node.type(t.id) .. ' subtype=' .. t.subtype )
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| − | if t.id == hlist or t.id == vlist then
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| − | texio.write(' w=' .. t.width .. ' h=' .. t.height .. ' d=' .. t.depth .. ' s=' .. t.shift )
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| − | gothru(t.list,prof+1)
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| − | end
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| − | if t.id == glyph then
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| − | texio.write(' font=' .. t.font .. ' char=' .. t.char .. ' width=' .. font.fonts[t.font].characters[t.char]['width'])
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| − | end
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| − | end
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| − | end
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| − | | |
| − | callback.register('pre_linebreak_filter',
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| − | function(h)
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| − | gothru(h,0)
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| − | return true
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| − | end
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| − | )
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| − | }
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| − | </pre>
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| − | | |
| − | It will display a list of all nodes on the terminal and in the log file. For example, for the document
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| − | | |
| − | <pre>
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| − | \font\x=omlgc
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| − | \x blε bla bla bla
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| − | </pre> | |
| − | | |
| − | which contains a Greek letter (in UTF-8), you will get:
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| − | | |
| − | <pre>
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| − | This is luaTeX, Version 3.141592-snapshot-2007062922 (Web2C 7.5.6)
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| − | (
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| − | NODE type=whatsit subtype=6
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| − | NODE type=hlist subtype=0
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| − | NODE type=glyph subtype=0 font=51 char=98
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| − | NODE type=glyph subtype=0 font=51 char=108
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| − | NODE type=glyph subtype=0 font=51 char=941
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| − | NODE type=glue subtype=0
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| − | NODE type=glyph subtype=0 font=51 char=98
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| − | NODE type=glyph subtype=0 font=51 char=108
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| − | NODE type=glyph subtype=0 font=51 char=97
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| − | NODE type=glue subtype=0
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| − | NODE type=glyph subtype=0 font=51 char=98
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| − | NODE type=glyph subtype=0 font=51 char=108
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| − | NODE type=glyph subtype=0 font=51 char=97
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| − | NODE type=glue subtype=0
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| − | NODE type=glyph subtype=0 font=51 char=98
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| − | NODE type=glyph subtype=0 font=51 char=108
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| − | NODE type=glyph subtype=0 font=51 char=97
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| − | NODE type=glue subtype=0
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| − | Underfull \hbox (badness 10000) in paragraph at lines 14--15
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| − | | |
| − | [1] )
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| − | </pre>
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| − | | |
| − | Be aware of the fact that the nodes will be created only if the glyph requested indeed exists in the font.
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| − | | |
| − | [[User:Yannis.Haralambous|Yannis.Haralambous]] 02:52, 4 July 2007 (EDT) | |
