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2012-06-25Merge branch 'jk/no-more-asciidoc7'Libravatar Junio C Hamano1-18/+0
We no longer use AsciiDoc7 syntax in our documentation and favor a more modern style. * jk/no-more-asciidoc7: docs: drop antique comment from Makefile docs: drop asciidoc7compatible flag
2012-06-08Merge branch 'mm/api-credentials-doc'Libravatar Junio C Hamano1-0/+2
Finishing touches... * mm/api-credentials-doc: docs: fix cross-directory linkgit references
2012-06-08docs: fix cross-directory linkgit referencesLibravatar Jeff King1-0/+2
Most of our documentation is in a single directory, so using linkgit:git-config[1] just generates a relative link in the same directory. However, this is not the case with the API documentation in technical/*, which need to refer to git-config from the parent directory. We can fix this by passing a special prefix attribute when building in a subdirectory, and respecting that prefix in our linkgit definitions. We only have to modify the html linkgit definition. For manpages, we can ignore this for two reasons: 1. we do not generate actual links to the file in manpages, but instead just give the name and section of the linked manpage 2. we do not currently build manpages for subdirectories, only html Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-30docs: drop antique comment from MakefileLibravatar Jeff King1-9/+0
This comment warns about a bug in asciidoc 6, and points to a patch from 2005. Since we don't even support versions of asciidoc that old, we can safely get rid of the warning. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-30docs: drop asciidoc7compatible flagLibravatar Jeff King1-9/+0
When we made the switch to supporting asciidoc 8 in 4c7100a (Documentation: adjust to AsciiDoc 8, 2007-06-14), we were able to leave most of the documentation intact by defining asciidoc7compatible. Since commit 6cf378f (docs: stop using asciidoc no-inline-literal, 2012-04-26), we don't support versions of asciidoc older than 8.4.1, which is when inline literals were introduced. Therefore there is not much point in keeping our documentation compatible with asciidoc 7. So we are now free to drop the asciidoc7compatible flag and update the documentation itself to assume asciidoc8. Fortunately, doing the latter is very easy; we weren't using any of the constructs impacted by asciidoc7compatible, so there are no changes to make. The reason is somewhat subtle. The asciidoc7compatible affects only super/sub-scripts ("^" and "~") and index terms. We don't use the latter at all. Nor we do we use the former, but we did have to protect them from accidental expansion in constructs like "rev^1". However, all of our uses of "~" and "^" are either in code blocks (which are rendered literally), or inside backticks. Prior to 6cf378f, backticks were not inline literals, and needed proper quoting. But post-6cf378f, we don't have to worry whether we are using the old or new rules, as those characters are not interpreted at all in either case. I verified that the result of "make install-html install-man" is identical before and after this patch on asciidoc 8.6.7. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-05-02Merge branch 'jk/doc-asciidoc-inline-literal'Libravatar Junio C Hamano1-1/+1
Our documentation was written for an ancient version of AsciiDoc, making the source not very readable. By Jeff King * jk/doc-asciidoc-inline-literal: docs: stop using asciidoc no-inline-literal
2012-04-26docs: stop using asciidoc no-inline-literalLibravatar Jeff King1-1/+1
In asciidoc 7, backticks like `foo` produced a typographic effect, but did not otherwise affect the syntax. In asciidoc 8, backticks introduce an "inline literal" inside which markup is not interpreted. To keep compatibility with existing documents, asciidoc 8 has a "no-inline-literal" attribute to keep the old behavior. We enabled this so that the documentation could be built on either version. It has been several years now, and asciidoc 7 is no longer in wide use. We can now decide whether or not we want inline literals on their own merits, which are: 1. The source is much easier to read when the literal contains punctuation. You can use `master~1` instead of `master{tilde}1`. 2. They are less error-prone. Because of point (1), we tend to make mistakes and forget the extra layer of quoting. This patch removes the no-inline-literal attribute from the Makefile and converts every use of backticks in the documentation to an inline literal (they must be cleaned up, or the example above would literally show "{tilde}" in the output). Problematic sites were found by grepping for '`.*[{\\]' and examined and fixed manually. The results were then verified by comparing the output of "html2text" on the set of generated html pages. Doing so revealed that in addition to making the source more readable, this patch fixes several formatting bugs: - HTML rendering used the ellipsis character instead of literal "..." in code examples (like "git log A...B") - some code examples used the right-arrow character instead of '->' because they failed to quote - api-config.txt did not quote tilde, and the resulting HTML contained a bogus snippet like: <tt><sub></tt> foo <tt></sub>bar</tt> which caused some parsers to choke and omit whole sections of the page. - git-commit.txt confused ``foo`` (backticks inside a literal) with ``foo'' (matched double-quotes) - mentions of `A U Thor <author@example.com>` used to erroneously auto-generate a mailto footnote for author@example.com - the description of --word-diff=plain incorrectly showed the output as "[-removed-] and {added}", not "{+added+}". - using "prime" notation like: commit `C` and its replacement `C'` confused asciidoc into thinking that everything between the first backtick and the final apostrophe were meant to be inside matched quotes - asciidoc got confused by the escaping of some of our asterisks. In particular, `credential.\*` and `credential.<url>.\*` properly escaped the asterisk in the first case, but literally passed through the backslash in the second case. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-10var doc: advertise current DEFAULT_PAGER and DEFAULT_EDITOR settingsLibravatar Jonathan Nieder1-0/+10
Document the default pager and editor chosen at compile time in the git-var(1) manpage so users curious about what command _this_ copy of git will fall back to when EDITOR, VISUAL, and PAGER are unset can find the answer quickly. In builds leaving those settings uncustomized, this patch makes the manpage continue to say "usually vi" and "usually less" so the formatted documentation is usable for a wide audience including users of custom builds that change those settings. If you would like your copy of the docs to be less noncommittal, you will need to set DEFAULT_PAGER=less and DEFAULT_EDITOR=vi explicitly. Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-01-18pulling signed tag: add howto documentLibravatar Junio C Hamano1-1/+4
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-12-11docs: end-user documentation for the credential subsystemLibravatar Jeff King1-0/+1
The credential API and helper format is already defined in technical/api-credentials.txt. This presents the end-user view. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-08Sync with 1.7.7.3Libravatar Junio C Hamano1-6/+17
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-11-08docs: Update install-doc-quickLibravatar Junio C Hamano1-6/+17
The preformatted documentation pages live in their own repositories these days. Adjust the installation procedure to the updated layout. Tested-by: Stefan Naewe <stefan.naewe@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-16gitweb: Add gitweb(1) manpage for gitweb itselfLibravatar Jakub Narebski1-1/+1
Most of what is in gitweb.txt it has been pulled directly from the README and INSTALL files of gitweb. Current version is somewhat based on structure of SVN::Web manpage (one of web interfaces for Subversion). gitweb.conf(5) i.e. gitweb configuration manpage now refers to appropriate sections in gitweb(1). gitweb/README now refers to gitweb/INSTALL and gitweb(1) manpage. gitweb/INSTALL now refers to gitweb.conf(5) and gitweb(1). Inspired-by: Drew Northup <drew.northup@maine.edu> Signed-off-by: Jakub Narebski <jnareb@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-10-16gitweb: Add gitweb.conf(5) manpage for gitweb configuration filesLibravatar Drew Northup1-1/+1
Much of what is in gitweb.conf.txt has been pulled directly from the README file of gitweb. The manpage was supplemented with description of missing gitweb config variables, and with description of gitweb's %features. There remains a bit of redundancy, which should be reduced if possible... but I think some of duplication of information is inevitable. [jn: Improved, extended, removed duplicate info from README] Signed-off-by: Drew Northup <drew.northup@maine.edu> Signed-off-by: Jakub Narebski <jnareb@gmail.com> Helped-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-17Merge branch 'js/ref-namespaces'Libravatar Junio C Hamano1-1/+1
* js/ref-namespaces: ref namespaces: tests ref namespaces: documentation ref namespaces: Support remote repositories via upload-pack and receive-pack ref namespaces: infrastructure Fix prefix handling in ref iteration functions
2011-08-08Documentation/Makefile: add *.pdf to `clean' targetLibravatar Emilio G. Cota1-0/+1
user-manual.pdf is not removed by `make clean'; fix it. Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-07-11ref namespaces: documentationLibravatar Josh Triplett1-1/+1
Document the namespace mechanism in a new gitnamespaces(7) page. Reference it from receive-pack and upload-pack. Document the new --namespace option and GIT_NAMESPACE environment variable in git(1), and reference gitnamespaces(7). Add a sample Apache configuration to http-backend(1) to support namespaced repositories, and reference gitnamespaces(7). Signed-off-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Jamey Sharp <jamey@minilop.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-11-24docs: default to more modern toolsetLibravatar Jeff King1-15/+8
When the ASCIIDOC8 and ASCIIDOC_NO_ROFF knobs were built, many people were still on asciidoc 7 and using older versions of docbook-xsl. These days, even the almost 2-year-old Debian stable needs these knobs turned. So let's turn them by default. The new knobs ASCIIDOC7 and ASCIIDOC_ROFF can be used to get the old behavior if people are on older systems. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-08-21docs: fix Makefile dependency for user manualLibravatar Jeff King1-1/+1
We use our custom xsl file to build the user manual, so make sure we depend on it. We don't use it anywhere else, so we can stick it straight in the rule. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-07-05Documentation: gitrevisionsLibravatar Michael J Gruber1-1/+1
Create a new man page gitrevisions(7) which contains the revsions and ranges documentation but not more. This uses (per include) the same bits as the pertaining section of git-rev-parse(1). Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-04-21Documentation/Makefile: fix interrupted builds of user-manual.xmlLibravatar Jonathan Nieder1-2/+6
Unlike gcc, asciidoc does not atomically write its output file or delete it when interrupted. If it is interrupted in the middle of writing an XML file, the result will be truncated input for xsltproc. XSLTPROC user-manual.html user-manual.xml:998: parser error : Premature end of data in t Take care of this case by writing to a temporary and renaming it when finished. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-01-06Makefile: consolidate .FORCE-* targetsLibravatar Jonathan Nieder1-2/+2
Providing multiple targets to force a rebuild is unnecessary complication. Avoid using a name that could conflict with future special targets in GNU make (a leading period followed by uppercase letters). The corresponding change to the git-gui Makefile is left for another patch. Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-12-05Sync with 1.6.5.5Libravatar Junio C Hamano1-11/+12
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-12-05Documentation: Avoid use of xmlto --stringparamLibravatar Todd Zullinger1-11/+12
The --stringparam option is not available on older xmlto versions. Instead, set man.base.url.for.relative.links via a .xsl file. Older docbook versions will ignore this without causing grief to users of older xmlto versions. Signed-off-by: Todd Zullinger <tmz@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-12-03Merge branch 'maint'Libravatar Junio C Hamano1-0/+7
* maint: Prepare for 1.6.5.5 Documentation: xmlto 0.0.18 does not know --stringparam t4201: use ISO8859-1 rather than ISO-8859-1
2009-12-03Documentation: xmlto 0.0.18 does not know --stringparamLibravatar Junio C Hamano1-0/+7
Newer DocBook stylesheets want man.base.url.for.relative.links parameter set when formatting manpages with external references to turn them into full URLs, and leave a helpful "you should set this parameter" message in the output. Earlier we added the MAN_BASE_URL make variable to specify the value for it. When MAN_BASE_URL is not given, it ought to be safe to set the parameter to empty; it would result in an empty leading path for older stylesheets that ignore the parameter, and newer ones would produce the same "relative URL" without the message. Unfortunately, older xmlto (at least version 0.0.18 released in early 2004 that comes with RHEL/CentOS 5) does not understand the --stringparam command line option, so we cannot add the parameter definition unconditionally to the command line. Work it around by passing the parameter only when set. If you do not have a suitable URL prefix, you can pass a quoted empty string to it, like so: $ make MAN_BASE_URL='""' Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-12-03Merge in 1.6.5.4Libravatar Junio C Hamano1-2/+5
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-12-03Unconditionally set man.base.url.for.relative.linksLibravatar Junio C Hamano1-2/+5
Even setting it to empty is better than leaving it unset as it prevents the warning cruft from appearing in the output. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-12-03Merge branch 'maint'Libravatar Junio C Hamano1-0/+4
2009-12-03Documentation/Makefile: allow man.base.url.for.relative.link to be set from MakeLibravatar Junio C Hamano1-0/+4
Signed-off-by: Junio C Hamano <junio@kernel.org>
2009-11-15Merge branch 'tr/maint-roff-quote' into maintLibravatar Junio C Hamano1-0/+8
* tr/maint-roff-quote: Quote ' as \(aq in manpages
2009-11-08Documentation: add "Fighting regressions with git bisect" articleLibravatar Christian Couder1-0/+1
This patch adds an asciidoc version of the "Fighting regressions with git bisect" article that the author wrote for the Linux-Kongress 2009 (http://www.linux-kongress.org/2009). This paper might be interesting to people who want to learn as much as possible about "git bisect" from a single document. The slides of the related presentation are available at: http://www.linux-kongress.org/2009/slides/fighting_regressions_with_git_bisect_christian_couder.pdf But the Linux Kongress people will not publish this paper online because they print the papers on their UpTimes magazine (http://www.lob.de/isbn/978-3-86541-358-1). But they don't take away the rights of the author (which is very nice), so I have the right to publish it. Signed-off-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-10-30Merge branch 'tr/maint-roff-quote'Libravatar Junio C Hamano1-0/+8
* tr/maint-roff-quote: Quote ' as \(aq in manpages
2009-10-22Quote ' as \(aq in manpagesLibravatar Thomas Rast1-0/+8
The docbook/xmlto toolchain insists on quoting ' as \'. This does achieve the quoting goal, but modern 'man' implementations turn the apostrophe into a unicode "proper" apostrophe (given the right circumstances), breaking code examples in many of our manpages. Quote them as \(aq instead, which is an "apostrophe quote" as per the groff_char manpage. Unfortunately, as Anders Kaseorg kindly pointed out, this is not portable beyond groff, so we add an extra Makefile variable GNU_ROFF which you need to enable to get the new quoting. Thanks also to Miklos Vajna for documentation. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-25Disable asciidoc 8.4.1+ semantics for `{plus}` and friendsLibravatar Thomas Rast1-1/+1
asciidoc 8.4.1 changed the semantics of inline backtick quoting so that they disable parsing of inline constructs, i.e., Input: `{plus}` Pre 8.4.1: + Post 8.4.1: {plus} Fix this by defining the asciidoc attribute 'no-inline-literal' (which, per the 8.4.1 changelog, is the toggle to return to the old behaviour) when under ASCIIDOC8. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-28doc: consistently use ASCIIDOC_EXTRALibravatar Eric Blake1-3/+3
For all uses of $(ASCIIDOC) in Documentation/Makefile, supply the same options via $(ASCIIDOC_EXTRA). Signed-off-by: Eric Blake <ebb9@byu.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-12documentation: Makefile accounts for SHELL_PATH settingLibravatar Ben Walton1-6/+10
Ensure that the Makefile that generates and installs the Documentation is aware of any SHELL_PATH setting. Use this value if found or the current setting for SHELL if not. This is an accommodation for systems where sh is not POSIX enough. Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-04-01Documentation: use "spurious .sp" XSLT if DOCBOOK_SUPPRESS_SP is setLibravatar Chris Johnsen1-1/+6
With this change, the "spurious .sp" suppression XSLT code is disabled by default. It can be enabled by defining DOCBOOK_SUPPRESS_SP. The "spurious .sp" XSLT fragment was used to work around a bug first released in docbook-xsl 1.69.1. Modern versions of docbook-xsl are negatively affected by the code (some empty lines are omitted from manpage output; see <http://article.gmane.org/gmane.comp.version-control.git/115302>). The key revisions in the docbook SVN repo seem to be 5144 (before docbook-xsl 1.69.1) and 6359 (before docbook-xsl 1.71.1). Testing done with asciidoc 8.3.1 and docbook-xsl 1.74.0. Signed-off-by: Chris Johnsen <chris_johnsen@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-27Merge branch 'cj/doc-quiet' into cj/doc-formatLibravatar Junio C Hamano1-31/+60
* cj/doc-quiet: Documentation/Makefile: break up texi pipeline Documentation/Makefile: make most operations "quiet" Conflicts: Documentation/Makefile
2009-03-27Documentation: option to render literal text as bold for manpagesLibravatar Chris Johnsen1-1/+5
This allows manpages viewed on a tty to render inline literal text in a manner that is distinct from the surrounding text. The initial implementation (pre-mailing-list) of this patch included a conditional variant of the XSLT code in manpage-base.xsl and use xmlto's --stringparam option to optionally enable the functionality. It turns out that --stringparam is broken in all versions of xmlto except for the pre-release, SVN version. Since xmlto is a shell script the patch to fix it is simple enough, but I instead opted to use xmlto's "module" functionality. Testing done with asciidoc 8.3.1 and docbook-xsl 1.74.0. Signed-off-by: Chris Johnsen <chris_johnsen@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-27Documentation: rename docbook-xsl-172 attribute to git-asciidoc-no-roffLibravatar Chris Johnsen1-1/+28
It seems that the ability to use raw roff codes in asciidoc.conf was eliminated by docbook-xsl 1.72.0 _and later_. Unlike the 1.72.0-specific XSLT problem, this behavior was not reverted in later releases. This patch aims to make it clear that the affected asciidoc attribute (flag) can be reasonably used with docbook-xsl versions other than 1.72.0. Also, document which make variables should be set for various versions of asciidoc and docbook-xsl. Testing done with asciidoc 8.3.1 and docbook-xsl 1.74.0. Signed-off-by: Chris Johnsen <chris_johnsen@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-27Documentation: move callouts.xsl to manpage-{base,normal}.xslLibravatar Chris Johnsen1-1/+1
Each of manpage-base.xsl and manpage-normal.xsl gets a copy of the contents of callouts.xsl and the original is removed. The Makefile is adjusted to refer to manpage-normal.xsl instead of callouts.xsl. manpage-base.xsl will be later made into a common base for -normal and -1.72. Testing done with asciidoc 8.3.1 and docbook-xsl 1.74.0. Signed-off-by: Chris Johnsen <chris_johnsen@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-27Documentation/Makefile: break up texi pipelineLibravatar Chris Johnsen1-4/+7
Most shells define the exit value of a pipeline as the exit value of the last process. For each texi rule, run the DOCBOOK2X_TEXI tool and the "fixup" script in their own non-pipeline commands so that make will notice an error exit code. Signed-off-by: Chris Johnsen <chris_johnsen@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-03-27Documentation/Makefile: make most operations "quiet"Libravatar Chris Johnsen1-29/+55
This adapts the "quiet make" implementation from the main Makefile. Signed-off-by: Chris Johnsen <chris_johnsen@pobox.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-07Merge branch 'mv/um-pdf'Libravatar Junio C Hamano1-0/+13
* mv/um-pdf: Add support for a pdf version of the user manual
2008-12-29Fix the building of gitman.info documentLibravatar Teemu Likonen1-1/+1
"makeinfo" failed to generate gitman.info from gitman.texi input file because the combined manual page file contains several nodes with the same name (DESCRIPTION, OPTIONS, SEE ALSO etc.). An Info document should contain unique node names. This patch creates a simple (read: ugly) work-around by suppressing the validation of the final Info file. Jumping to nodes in the Info document still works but they are not very useful. Common man-page headings like DESCRIPTION and OPTIONS appear in the Info node list and they point to the man page where they appear first (that is git-add currently). Also, this patch adds directory-entry information for Info document to make the document appear in the top-level Info directory. Signed-off-by: Teemu Likonen <tlikonen@iki.fi> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-29Fix the building of user-manual.texi and gitman.texi documentsLibravatar Teemu Likonen1-3/+4
Previously "docbook2x-texi" failed to generate user-manual.texi and gitman.texi files from .xml input files because "iconv" stopped at "illegal input sequence" error. This was due to some UTF-8 octets in the input .xml files. This patch adds option --encoding=UTF-8 for "docbook2x-texi" to allow the building of .texi files complete. Signed-off-by: Teemu Likonen <tlikonen@iki.fi> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-12-10Add support for a pdf version of the user manualLibravatar Miklos Vajna1-0/+13
Use dblatex in order to create a pdf version of the git user manual. No existing Makefile targets (including "all") are touched, so you need to explicitly say make pdf sudo make install-pdf to get user-manual.pdf created and installed. Signed-off-by: Miklos Vajna <vmiklos@frugalware.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-11-02Makefile: add install-man rules (quick and normal)Libravatar Markus Heidelberg1-2/+6
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-10-19Documentation: add manpage about workflowsLibravatar Thomas Rast1-1/+1
This attempts to make a manpage about workflows that is both handy to point people at it and as a beginner's introduction. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>