Avoid extra filelogs entries. Right now, there are some situations in which localrepo.filecommit can create filelog entries even though they're not needed. For example: - permissions for a file have changed; - qrefresh can create a filelog entry identical to its parent (see the added test); - convert-repo creates extra filelog entries in every merge where the first parent has added files (for example, changeset ebebe9577a1a of the kernel repo added extra filelog entries to files in the arch/blackfin directory, even though the merge should only touch the drivers/ata directory). This makes "hg log file" in a converted repo less useful than it could be, since it may mention many merges that don't actually touch that specific file. They all come from the same basic problem: localrepo.commit (through filecommit) creates new filelog entries for all files passed to it (except for some cases during a merge). Patch and test case provided by Benoit. This should fix issue351.

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Mercurial's documentation is currently kept in ASCIIDOC format, which

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is a simple plain text format that's easy to read and edit. It's also

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convertible to a variety of other formats including standard UNIX man

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page format and HTML.

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To do this, you'll need to install ASCIIDOC:

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 http://www.methods.co.nz/asciidoc/

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To generate the man page:

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 asciidoc -d manpage -b docbook hg.1.txt

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 xmlto man hg.1.xml

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To display:

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 groff -mandoc -Tascii hg.1 | more

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To create the html page (without stylesheets):

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 asciidoc -b html hg.1.txt