[xep-support] Superscripts cause list item label to be raised above list item body baseline
Jim Melton
jim.melton at acm.org
Fri Mar 14 15:00:01 PST 2003
I have encountered a very strange problem when rendering XSL FO to PDF
using RenderX XEP 3.2.2 (and some earlier versions, as well). The
situation is easy enough to describe:
I am writing a large standards document using XML. In that document, I
have a rule (a list element) whose text contains a superscript. Here's an
abstract of that XML:
<item>If <emph>MAX</emph> is equal to 2<super>63</super>-1
(9,223,372,036,854,775,807) and <emph>MIN</emph> is equal to
-2<super>63</super> (-9,223,372,036,854,775,808), then <emph>REST</emph> is:
When that XML is transformed by my XSLT stylesheet into XSL FO, it looks
like this:
<fo:list-block provisional-label-separation="3pt"
space-before.optimum="6pt" provisional-distance-between-starts="18pt">
<fo:list-item id="'generate_id()'" space-before.optimum="8pt"
hyphenate="true">
<fo:list-item-label end-indent="label-end()">
<fo:block text-align="start">1)</fo:block>
</fo:list-item-label>
<fo:list-item-body start-indent="body-start()">
<fo:block>If <fo:inline font-style="italic">MAX</fo:inline> is equal to
2<fo:inline baseline-shift="super" font-size="smaller">63</fo:inline>-1
(9,223,372,036,854,775,807) and <fo:inline
font-style="italic">MIN</fo:inline> is equal to
-2<fo:inline baseline-shift="super" font-size="smaller">63</fo:inline>
(-9,223,372,036,854,775,808), then <fo:inline
font-style="italic">REST</fo:inline>
is:
I have attached a larger abstract from the XSL FO to this message, although
I doubt that additional value will be gained from examining that larger
abstract.
The result of rendering the XSL FO into PDF is a list element in which the
list item label (in this case, "1)") to be raised above the baseline of the
list item body's baseline...in fact, it is raised to the baseline of the
superscripts on the first line of the list item body!
This is demonstrated in the 1-page PDF file that I attached to this message.
Is there something wrong with my XSL FO, or is this a bug (possibly already
reported?) in XEP?
Thanks,
Jim
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<fo:block space-before.optimum="8pt" space-before.minimum="8pt" space-before.maximum="28pt" hyphenate="true">
Case:
</fo:block>
<fo:list-block provisional-label-separation="3pt" space-before.optimum="6pt" provisional-distance-between-starts="18pt">
<fo:list-item id="'generate_id()'" space-before.optimum="8pt" hyphenate="true">
<fo:list-item-label end-indent="label-end()">
<fo:block text-align="start">1)</fo:block>
</fo:list-item-label>
<fo:list-item-body start-indent="body-start()">
<fo:block>If <fo:inline font-style="italic">MAX</fo:inline> is equal to 2<fo:inline baseline-shift="super" font-size="smaller">63</fo:inline>-1
(9,223,372,036,854,775,807) and <fo:inline font-style="italic">MIN</fo:inline> is equal to
-2<fo:inline baseline-shift="super" font-size="smaller">63</fo:inline> (-9,223,372,036,854,775,808), then <fo:inline font-style="italic">REST</fo:inline>
is:
<fo:block space-before="-3pt" space-after="-3pt" font="9pt Courier" white-space-treatment="preserve" linefeed-treatment="preserve" white-space-collapse="false">
<xsd:restriction base="xsd:long"/>
</fo:block>
</fo:block>
</fo:list-item-body>
</fo:list-item>
<fo:list-item id="'generate_id()'" space-before.optimum="8pt" hyphenate="true">
<fo:list-item-label end-indent="label-end()">
<fo:block text-align="start">2)</fo:block>
</fo:list-item-label>
<fo:list-item-body start-indent="body-start()">
<fo:block>If <fo:inline font-style="italic">MAX</fo:inline> is less than 2<fo:inline baseline-shift="super" font-size="smaller">63</fo:inline>-1
(9,223,372,036,854,775,807) and <fo:inline font-style="italic">MIN</fo:inline> is equal to
-2<fo:inline baseline-shift="super" font-size="smaller">63</fo:inline> (-9,223,372,036,854,775,808), then <fo:inline font-style="italic">REST</fo:inline>
is:
<fo:block space-before="-3pt" space-after="-3pt" font="9pt Courier" white-space-treatment="preserve" linefeed-treatment="preserve" white-space-collapse="false">
<xsd:restriction base="xsd:long">
<fo:inline font-style="italic">FACETMAX</fo:inline>
</xsd:restriction>
</fo:block>
</fo:block>
</fo:list-item-body>
</fo:list-item>
<fo:list-item id="'generate_id()'" space-before.optimum="8pt" hyphenate="true">
<fo:list-item-label end-indent="label-end()">
<fo:block text-align="start">3)</fo:block>
</fo:list-item-label>
<fo:list-item-body start-indent="body-start()">
<fo:block>If <fo:inline font-style="italic">MAX</fo:inline> is equal to 2<fo:inline baseline-shift="super" font-size="smaller">63</fo:inline>-1
(9,223,372,036,854,775,807) and <fo:inline font-style="italic">MIN</fo:inline> is greater than
-2<fo:inline baseline-shift="super" font-size="smaller">63</fo:inline> (-9,223,372,036,854,775,808) but not equal to 0
(zero), then <fo:inline font-style="italic">REST</fo:inline> is:
<fo:block space-before="-3pt" space-after="-3pt" font="9pt Courier" white-space-treatment="preserve" linefeed-treatment="preserve" white-space-collapse="false">
<xsd:restriction base="xsd:long">
<fo:inline font-style="italic">FACETMIN</fo:inline>
</xsd:restriction>
</fo:block>
</fo:block>
</fo:list-item-body>
</fo:list-item>
<fo:list-item id="'generate_id()'" space-before.optimum="8pt" hyphenate="true">
<fo:list-item-label end-indent="label-end()">
<fo:block text-align="start">4)</fo:block>
</fo:list-item-label>
<fo:list-item-body start-indent="body-start()">
<fo:block>If <fo:inline font-style="italic">MAX</fo:inline> is less than 2<fo:inline baseline-shift="super" font-size="smaller">63</fo:inline>-1
(9,223,372,036,854,775,807) but greater than 2<fo:inline baseline-shift="super" font-size="smaller">31</fo:inline>-1
(2,147,483,647) and <fo:inline font-style="italic">MIN</fo:inline> is less than 0 (zero) or
<fo:inline font-style="italic">MIN</fo:inline> is greater than -2<fo:inline baseline-shift="super" font-size="smaller">63</fo:inline>
(-9,223,372,036,854,775,808) but less than -2<fo:inline baseline-shift="super" font-size="smaller">31</fo:inline>
(-2,147,483,648), then <fo:inline font-style="italic">REST</fo:inline> is:
<fo:block space-before="-3pt" space-after="-3pt" font="9pt Courier" white-space-treatment="preserve" linefeed-treatment="preserve" white-space-collapse="false">
<xsd:restriction base="xsd:long">
<fo:inline font-style="italic">FACETMAX</fo:inline>
<fo:inline font-style="italic">FACETMIN</fo:inline>
</xsd:restriction>
</fo:block>
</fo:block>
</fo:list-item-body>
</fo:list-item>
<fo:list-item id="'generate_id()'" space-before.optimum="8pt" hyphenate="true">
<fo:list-item-label end-indent="label-end()">
<fo:block text-align="start">5)</fo:block>
</fo:list-item-label>
<fo:list-item-body start-indent="body-start()">
<fo:block>If <fo:inline font-style="italic">MAX</fo:inline> is equal to 2<fo:inline baseline-shift="super" font-size="smaller">31</fo:inline>-1 (2,147,483,647)
and <fo:inline font-style="italic">MIN</fo:inline> is equal to -2<fo:inline baseline-shift="super" font-size="smaller">31</fo:inline> (-2,147,483,648), then
<fo:inline font-style="italic">REST</fo:inline> is:
<fo:block space-before="-3pt" space-after="-3pt" font="9pt Courier" white-space-treatment="preserve" linefeed-treatment="preserve" white-space-collapse="false">
<xsd:restriction base="xsd:int"/>
</fo:block>
</fo:block>
</fo:list-item-body>
</fo:list-item>
<fo:list-item id="'generate_id()'" space-before.optimum="8pt" hyphenate="true">
<fo:list-item-label end-indent="label-end()">
<fo:block text-align="start">6)</fo:block>
</fo:list-item-label>
<fo:list-item-body start-indent="body-start()">
<fo:block>If <fo:inline font-style="italic">MAX</fo:inline> is less than 2<fo:inline baseline-shift="super" font-size="smaller">31</fo:inline>-1 (2,147,483,647)
and <fo:inline font-style="italic">MIN</fo:inline> is equal to -2<fo:inline baseline-shift="super" font-size="smaller">31</fo:inline> (-2,147,483,648), then
<fo:inline font-style="italic">REST</fo:inline> is:
<fo:block space-before="-3pt" space-after="-3pt" font="9pt Courier" white-space-treatment="preserve" linefeed-treatment="preserve" white-space-collapse="false">
<xsd:restriction base="xsd:int">
<fo:inline font-style="italic">FACETMAX</fo:inline>
</xsd:restriction>
</fo:block>
</fo:block>
</fo:list-item-body>
</fo:list-item>
<fo:list-item id="'generate_id()'" space-before.optimum="8pt" hyphenate="true">
<fo:list-item-label end-indent="label-end()">
<fo:block text-align="start">7)</fo:block>
</fo:list-item-label>
<fo:list-item-body start-indent="body-start()">
<fo:block>If <fo:inline font-style="italic">MAX</fo:inline> is equal to 2<fo:inline baseline-shift="super" font-size="smaller">31</fo:inline>-1 (2,147,483,647)
and <fo:inline font-style="italic">MIN</fo:inline> is greater than -2<fo:inline baseline-shift="super" font-size="smaller">31</fo:inline> (-2,147,483,648),
then <fo:inline font-style="italic">REST</fo:inline> is:
<fo:block space-before="-3pt" space-after="-3pt" font="9pt Courier" white-space-treatment="preserve" linefeed-treatment="preserve" white-space-collapse="false">
<xsd:restriction base="xsd:int">
<fo:inline font-style="italic">FACETMIN</fo:inline>
</xsd:restriction>
</fo:block>
</fo:block>
</fo:list-item-body>
</fo:list-item>
<fo:list-item id="'generate_id()'" space-before.optimum="8pt" hyphenate="true">
<fo:list-item-label end-indent="label-end()">
<fo:block text-align="start">8)</fo:block>
</fo:list-item-label>
<fo:list-item-body start-indent="body-start()">
<fo:block>If <fo:inline font-style="italic">MAX</fo:inline> is less than 2<fo:inline baseline-shift="super" font-size="smaller">31</fo:inline>-1 (2,147,483,647)
but greater than 2<fo:inline baseline-shift="super" font-size="smaller">15</fo:inline>-1 (32,767) and <fo:inline font-style="italic">MIN</fo:inline> is less
than 0 (zero) or <fo:inline font-style="italic">MIN</fo:inline> is greater than -2<fo:inline baseline-shift="super" font-size="smaller">31</fo:inline>
(-2,147,483,648) but less than -2<fo:inline baseline-shift="super" font-size="smaller">15</fo:inline> (-32,786), then
<fo:inline font-style="italic">REST</fo:inline> is:
<fo:block space-before="-3pt" space-after="-3pt" font="9pt Courier" white-space-treatment="preserve" linefeed-treatment="preserve" white-space-collapse="false">
<xsd:restriction base="xsd:int">
<fo:inline font-style="italic">FACETMAX</fo:inline>
<fo:inline font-style="italic">FACETMIN</fo:inline>
</xsd:restriction>
</fo:block>
</fo:block>
</fo:list-item-body>
</fo:list-item>
<fo:list-item id="'generate_id()'" space-before.optimum="8pt" hyphenate="true">
<fo:list-item-label end-indent="label-end()">
<fo:block text-align="start">9)</fo:block>
</fo:list-item-label>
<fo:list-item-body start-indent="body-start()">
<fo:block>If <fo:inline font-style="italic">MAX</fo:inline> is equal to 2<fo:inline baseline-shift="super" font-size="smaller">15</fo:inline>-1 (32,767) and
<fo:inline font-style="italic">MIN</fo:inline> is equal to -2<fo:inline baseline-shift="super" font-size="smaller">15</fo:inline> (-32,786), then
<fo:inline font-style="italic">REST</fo:inline> is:
<fo:block space-before="-3pt" space-after="-3pt" font="9pt Courier" white-space-treatment="preserve" linefeed-treatment="preserve" white-space-collapse="false">
<xsd:restriction base="xsd:short"/>
</fo:block>
</fo:block>
</fo:list-item-body>
</fo:list-item>
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========================================================================
Jim Melton --- Editor of ISO/IEC 9075-* (SQL) Phone: +1.801.942.0144
Oracle Corporation Oracle Email: mailto:jim.melton at oracle.com
1930 Viscounti Drive Standards email: mailto:jim.melton at acm.org
Sandy, UT 84093-1063 Personal email: mailto:jim at melton.name
USA Fax : +1.801.942.3345
========================================================================
= Facts are facts. However, any opinions expressed are the opinions =
= only of myself and may or may not reflect the opinions of anybody =
= else with whom I may or may not have discussed the issues at hand. =
========================================================================
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