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<?xml version="1.0" encoding="UTF-8"?>
<!--
This file is part of Inkscape.
Authors:
Rafael Siejakowski <rs@rs-math.net>
Copyright (C) 2022 the Authors.
Released under GNU GPL v2+, read the file 'COPYING' for more information.
-->
<language id="svgpoints" _name="SVG attribute 'points' of polygon and polyline elements" version="2.0" _section="Markup">
<styles>
<style id="error" _name="Error" map-to="def:error"/>
<style id="numeric" _name="Vertex coordinate" map-to="def:number"/>
</styles>
<definitions>
<define-regex id="exponent">e[+\-]?\d+</define-regex>
<define-regex id="fractional-constant">\d*\.\d+|\d+</define-regex>
<define-regex id="number">\%{fractional-constant}(\%{exponent})?</define-regex>
<define-regex id="coordinate">[+\-]?\%{number}</define-regex>
<define-regex id="invalid">[^\-+\s\r\n,\.0-9eE]</define-regex>
<!-- Invalid character (not allowed in the 'points' attribute). -->
<context id="invalid-char" style-ref="error" extend-parent="false" end-parent="true">
<match>\%{invalid}</match>
</context>
<!-- The 'points' attribute. -->
<context id="svgpoints">
<include>
<!-- Coordinate pair is defined as a region (allows for two numbers on separate lines). -->
<context id="point">
<start>\%{coordinate}</start>
<end>\%{coordinate}</end>
<include>
<context ref="invalid-char"/>
<context sub-pattern="0" where="start" style-ref="numeric"/>
<context sub-pattern="0" where="end" style-ref="numeric"/>
</include>
</context>
<context ref="invalid-char"/>
</include>
</context>
</definitions>
</language>
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