When enabled, the lines of code statistics are collected from linear history.
The downside is that commits of feature long feature branches appear only at
the point where a merge commit is made.

If disabled (old behaviour), the problem is that if two branches contain the
same changes (for example, removal of same lines), the statistics get skewed.

Fixes line count statistics for this example repository:
git://github.com/septract/jstar.git

Thanks-to: Radu Grigore <radugrigore@users.sourceforge.net>

This patch changes Makefile to use perl for version number replacement to fix
'make install' on Darwin. The problem is that GNU sed and sed on Darwin (and
probably on BSDs) behave differently with regards to the '-i' command line
option.

Signed-off-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Heikki Hokkanen <hoxu@users.sf.net>

The manpage is in pod format, and pod2man can be used to convert it.

Will show more truthful graphs when all domains have a lot of commits.

[hoxu@users.sf.net: rewrote commit message]

Signed-off-by: Heikki Hokkanen <hoxu@users.sf.net>

Signed-off-by: Heikki Hokkanen <hoxu@users.sf.net>

Fixes debian bug #585225:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=585225

Bit hackish and not fully supported, but -c commit_end=HEAD~10 allows limiting
statistics generation to before HEAD~10 for example.

No idea why this was used in the first place, apart from performance hit, it
had no effect.

"-c authors_top=N" changes how many authors are shown on "Author of month" and
"Author of year".

Clear files, inserted and deleted after storing them for the preceding commit.

git-svn, for example, can have empty commits (when a directory is created),
causing the statistics to get skewed.

[hoxu@users.sf.net: rewrote commit message based on Tyler's mail]

Signed-off-by: Heikki Hokkanen <hoxu@users.sf.net>

This fixes an issue where the cache fails to load on Windows machines.
EOL characters were getting modified, causing zlib uncompression to fail.

[hoxu@users.sf.net: slightly modified the commit message]

Signed-off-by: Heikki Hokkanen <hoxu@users.sf.net>

Signed-off-by: Heikki Hokkanen <hoxu@users.sf.net>

getAuthors sorts by commits, sorting it again negates that and instead
sorts the list alphabetically again which kind of defeats the purpose.

Signed-off-by: Heikki Hokkanen <hoxu@users.sf.net>

Signed-off-by: Heikki Hokkanen <hoxu@users.sf.net>

[hoxu@users.sf.net: removed some unrelated changes]

Can be overriden with -c max_authors=N

If the value overridden is int, convert new value to int as well.

gitstats -c key=value overrides config values.

No functional effect at this point.

Use 1.0,0.5 size for now.

Commit e5fc428ecf3b23ed6b1a640bbddff9a59b251969 broke for linux-2.6 repository
for example, so we make a little bit more effort in handling weird e-mail
addresses. The linux-2.6 repository contains quite a few of these, some can be
found with the following command:

git rev-list --pretty=format:"%H %an <%aE>" HEAD | grep -v ^commit |grep -v '@'

The activity page is about the date/time of commits, and authors about commit
authorship-related information.

Signed-off-by: Heikki Hokkanen <hoxu@users.sf.net>

commits_frac was used in date_first's place in f.write and, thus, completely
wrong in the resulting HTML report.

Signed-off-by: Heikki Hokkanen <hoxu@users.sf.net>

Commits in projects with lots of activity and authors don't happen
chronologically (patches are accepted later etc), so the counting was messed up
for them (git.git for example).

This was supposed to be part of the last commit.