convert: add a mode where mercurial_sink skips empty revisions.
The getchanges function of some converter_source classes can return
some false positives. I.e. they sometimes claim that a file "foo"
was changed in some revision, even though its contents are still the
same.
convert_svn is particularly bad, but I think this can also happen with
convert_cvs and, at least in theory, with mercurial_source.
For regular conversions this is not really a problem - as long as
getfile returns the right contents, we'll get a converted revision
with the right contents. But when we use --filemap, this could lead
to superfluous revisions being converted.
Instead of fixing every converter_source, I decided to change
mercurial_sink to work around this problem.
When --filemap is used, we're interested only in revisions that touch
some specific files. If a revision doesn't change any of these files,
then we're not interested in it (at least for revisions with a single
parent; merges are special).
For mercurial_sink, we abuse this property and rollback a commit if
the manifest text hasn't changed. This avoids duplicating the logic
from localrepo.filecommit to detect unchanged files.
<?xml version='1.0' encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version='1.0'>
<xsl:import href="http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl"/>
<xsl:output encoding="UTF-8"/>
<xsl:template match="refnamediv">
<xsl:text>.SH 名前 </xsl:text>
<xsl:for-each select="refname">
<xsl:if test="position()>1">
<xsl:text>, </xsl:text>
</xsl:if>
<xsl:value-of select="."/>
</xsl:for-each>
<xsl:text> \- </xsl:text>
<xsl:value-of select="normalize-space (refpurpose)"/>
</xsl:template>
<xsl:template match="refsynopsisdiv">
<xsl:text> .SH "書式" </xsl:text>
<xsl:apply-templates/>
</xsl:template>
</xsl:stylesheet>