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Description of changes introduced in GAP 4.8.3
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Alexander Konovalov committed Mar 22, 2016
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89 changes: 89 additions & 0 deletions doc/changes/changes48.xml
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Expand Up @@ -273,6 +273,95 @@ modules and Cat1-algebras and morphisms of these structures.

</Section>


<Section Label="gap483">
<Heading>&GAP; 4.8.3 (March 2016)</Heading>

<Subsection Label="Changes in the core GAP system introduced in GAP 4.8.3">
<Heading>Changes in the core &GAP; system introduced in &GAP; 4.8.3</Heading>

New features:
<List>
<Item>
<!-- #647 -->
New function <Ref Func="TestPackage" BookName="ref"/> to run standard tests
(if available) for a single package in the current &GAP; session (also callable
via <C>make testpackage PKGNAME=pkgname</C> to run package tests in the same
settings that are used for testing &GAP; releases).
</Item>
</List>

Improved and extended functionality:
<List>
<Item>
<!-- #670 -->
<Ref Func="TestDirectory" BookName="ref"/> now prints a special status message
to indicate the outcome of the test (this is convenient for automated testing).
If necessary, this message may be suppressed by using the option
<C>suppressStatusMessage</C>
</Item>
<Item>
<!-- [#655] -->
Improved output of tracing methods (which may be invoked, for example, with
<Ref Func="TraceAllMethods" BookName="ref"/>) by displaying filename and line
number in some more cases.
</Item>
</List>

Changed functionality:
<List>
<Item>
<!-- #615 -->
Fixed some inconsistencies in the usage of
<Ref Prop="IsGeneratorsOfSemigroup" BookName="ref"/>.
</Item>
</List>

Fixed bugs that could lead to incorrect results:
<List>
<Item>
<!-- #626 -->
Fallback methods for conjugacy classes, that were never intended for infinite
groups, now use <Ref Prop="IsFinite" BookName="ref"/> filter to prevent them
being called for infinite groups. [Reported by Gabor Horvath]
</Item>
</List>

Fixed bugs that could lead to break loops:
<List>
<Item>
<!-- #665 -->
Calculating stabiliser for the alternating group caused a break loop in the
case when it defers to the corresponding symmetric group.
</Item>
<Item>
<!-- #663 -->
It was not possible to use <Ref Func="DotFileLatticeSubgroups" BookName="ref"/>
for a trivial group. [Reported by Sergio Siccha]
</Item>
<Item>
<!-- #648 -->
A break loop while computing <Ref Attr="AutomorphismGroup" BookName="ref"/> for
<C>TransitiveGroup(12,269)</C>. [Reported by Ignat Soroko]
</Item>
<Item>
<!-- #622 -->
A break loop while computing conjugacy classes of <C>PSL(6,4)</C>.
[Reported by Martin Macaj]
</Item>
</List>

Other fixed bugs:
<List>
<Item>
<!-- #654 -->
Fix for using Firefox as a default help viewer with
<Ref Func="SetHelpViewer" BookName="ref"/>. [Reported by Tom McDonough]
</Item>
</List>
</Subsection>
</Section>

</Chapter>


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2 changes: 1 addition & 1 deletion lib/init.g
Original file line number Diff line number Diff line change
Expand Up @@ -1082,7 +1082,7 @@ BindGlobal( "ShowPackageInformation", function()
"\n" );
fi;

Print( " Try '?help' for help. See also '?copyright' and '?authors'",
Print( " Try '??help' for help. See also '?copyright' and '?authors'",
"\n" );
fi;
end );
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