Factor out the code to display the repository URL(s) from summary view
into a format_rep_url() routine.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When 'remotes' view is passed the 'hash' parameter, interpret it as the
name of a remote and limit the view the the heads of that remote.
In single-remote view we let the user switch easily to the default
remotes view by specifying an -action_extra for the page header and by
enabling the 'remotes' link in the reference navigation submenu.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
An optional -action_extra parameter is given to git_header_html() to
identify a variant of the action that is being displayed. For example,
this can be used to specify that the remotes view is being used for a
specific remote and not to display all remotes.
When -action_extra is provided, the action name in the header will be
turned into a link to the action without any arguments or parameters, to
provide a quick link to the non-specific variant of the action.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
tags, heads and remotes are all views that inspect a (particular class
of) refs, so allow the user to easily switch between them by adding
the appropriate navigation submenu to each view.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We specialize the 'heads' action to only display local branches, and
introduce a 'remotes' action to display the remote branches (only
available when the remotes_head feature is enabled).
Mirroring this, we also split the heads list in summary view into
local and remote lists, each linking to the appropriate action.
The git_get_heads_list now defaults to 'heads' only, regardless of
whether the remote heads feature is active or not.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git_get_heads_list(limit, class1, class2, ...) can now be used to retrieve
refs/class1, refs/class2 etc. Defaults to ('heads', 'remotes') or ('heads')
depending on whether the 'remote_heads' feature is enabled or not.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
With this feature enabled, remote heads are retrieved (and displayed)
when getting (and displaying) the heads list. Typical usage would be for
local repository browsing, e.g. by using git-instaweb (or even a more
permanent gitweb setup), to check the repository status and the relation
between tracking branches and the originating remotes.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Otherwise, if names are manipulated for display, the link will point to
the wrong head.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We say 'use 5.008' at the beginning of the script, therefore there is no
need to check if Time::HiRes module is available. We can also import
gettimeofday and tv_interval.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Eli Barzilay noticed that
http://server/gitweb/project/<commit-sha1>
link goes to 'shortlog' view, while 'commit' view would be more
useful, but that 'shortlog' action is more apropriate for
http://server/gitweb/project/<commit-sha1>..<other-commit-sha1>
links.
Therefore for the case when we don't have either action, or filename,
or parent hash [base] in path_info-based URL, i.e. for
http://server/gitweb/project/<object-id>
link, instead of using 'shortlog' view we allow dispatch() subroutine
to detect type of object and use appropriate action (in most case it
would be either 'commit' action, or 'tag', or 'tree' for top
directory).
Requested-by: Eli Barzilay <eli@barzilay.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Tested-by: Eli Barzilay <eli@barzilay.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
There was bug in parsing "project/:/file" and "project/:/" path_info
URLs, with implicit HEAD as 'hash_base'.
For such URLs the refname is empty, and before this fix regexp for
parsing path_info fragment assumed that it is always non-empty.
Refname cannot contain ':', as per 'git check-ref-format'.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Now evaluate_git_version() is inside run_request() to be called for each
request, instead of once per starting gitweb; this currently matters only
when using FastCGI interface (gitweb.fcgi).
This change was done because evaluate_git_version() uses $GIT variable,
which can be set / modified by gitweb config file, but the variable is
modified this way by gitweb config file used in gitweb tests. Without
this change there is spurious extra output from t9500 test when tests are
run with '--debug' option.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Formalize our dependency on perl 5.8, bumped from 5.6.[12]. We already
used the three-arg form of open() which was introduced in 5.6.1, but
t/t9700/test.pl explicitly depended on 5.6.2.
However git-add--interactive.pl has been failing on the 5.6 line since
it was introduced in v1.5.0-rc0~12^2~2 back in 2006 due to this open
syntax:
sub run_cmd_pipe {
my $fh = undef;
open($fh, '-|', @_) or die;
return <$fh>;
}
Which when executed dies on "Can't use an undefined value as
filehandle reference". Several of our tests also fail on 5.6 (even
more when compiled with NO_PERL_MAKEMAKER=1):
t2016-checkout-patch.sh
t3904-stash-patch.sh
t3701-add-interactive.sh
t7105-reset-patch.sh
t7501-commit.sh
t9700-perl-git.sh
Our code is bitrotting on 5.6 with no-one interested in fixing it, and
pinning us to such an ancient release of Perl is keeping us from using
useful features introduced in the 5.8 release.
The 5.6 series is now over 10 years old, and the 5.6.2 maintenance
release almost 7. 5.8 on the other hand is more than 8 years old.
All the modern Unix-like operating systems have now upgraded to it or
a later version, and 5.8 packages are available for old IRIX, AIX
Solaris and Tru64 systems.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Tor Arntsen <tor@spacetec.no>
Acked-by: Randal L. Schwartz <merlyn@stonehenge.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow build-time/run-time configuration of the highlight executable
(must be the one from http://www.andre-simon.de due to assumptions
about parameters and output). Defaults to previous behavior which
assumes that highlight is available on the server PATH. However, if
this is not the case, the path to the highlight executable can be
configured at build time as a configuration variable
HIGHLIGHT_BIN = /path/to/highlight
or at runtime by configuring GITWEB_CONFIG
$highlight_bin = /path/to/highlight
Signed-off-by: Christopher Wilson <cwilson@cdwilson.us>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This fixes an XML error when visiting a nonexistent tag
(i.e. "../gitweb.cgi?p=git.git;a=tag;h=refs/tags/BADNAME").
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* maint:
gitweb: clarify search results page when no matching commit found
Documentation: add a FILES section for show-ref
Makefile: add missing dependency on http.h
Makefile: add missing dependencies on url.h
Documentation/git-log: Clarify --full-diff
git-rebase: fix typo when parsing --force-rebase
imap-send: Fix sprintf usage
prune: allow --dry-run for -n and --verbose for -v
notes: allow --dry-run for -n and --verbose for -v
Document -B<n>[/<m>], -M<n> and -C<n> variants of -B, -M and -C
Documentation: cite git-am from git-apply
t7003: fix subdirectory-filter test
Allow "check-ref-format --branch" from subdirectory
check-ref-format: handle subcommands in separate functions
pretty-options.txt: match --format's documentation with implementation.
When searching commits for a string that never occurs, the results
page looks something like this:
projects / foo.git / search \o/
summary | ... | tree [commit] search: [ kfjdkas ] [ ]re
first ⋅ prev ⋅ next
Merge branch 'maint'
Foo: a demonstration project
Without a list of hits to compare it to, the header describing the
commit named by the hash parameter (usually HEAD) may itself look
like a hit. Add some text (“No match.”) to replace the empty
list of hits and avoid this confusion.
While at it, remove some nearby dead code, left behind from a
simplification a few years ago (v1.5.4-rc0~276^2~4, 2007-11-01).
Noticed-by: Erick Mattos <erick.mattos@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Run $post_dispatch_hook->() not $pre_dispatch_hook->() after each
request.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
gitolite's contrib/gitweb/gitweb.conf includes:
$ENV{GL_USER} = $cgi->remote_user || "gitweb";
which is useful for setups where a user has to be authenticated
to access certain repos. Perhaps other typical configurations
change per session in other ways, too.
v1.7.2-rc2~6 (gitweb: Move evaluate_gitweb_config out of run_request,
2010-07-05) broke such configurations for a speedup, by loading
the configuration once per FastCGI process.
Probably in the end there should be a way to specify in the
configuration whether a particular installation wants the speedup or
the flexibility. But for now it is easier to just undo the relevant
change.
This partially reverts commit 869d58813b.
Reported-by: Julio Lajara <julio.lajara@alum.rpi.edu>
Analysis-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move highlight config out of guess_file_syntax() so that it can be
extended/overridden by system/user configuration.
Signed-off-by: Alejandro R. Sedeño <asedeno@mit.edu>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Earlier, 452e225 (gitweb: fix esc_param, 2009-10-13) fixed CGI escaping
rules used in esc_url. A very similar logic exists in esc_param and needs
to be fixed the same way.
Signed-off-by: Pavan Kumar Sunkara <pavan.sss1991@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Move evaluate_gitweb_config() and evaluate_git_version() out of
run_request() to run(), making them not run one for each request.
This changes how git behaves in FastCGI case.
This change makes it impossible to have config which changes with
request, but I don't think anyone relied on such (hidden action)
behavior.
While at it, reset timer and number of git commands at beginning of
run_request() in new reset_timer() subroutine. This fixes case when
gitweb was run using FastCGI interface: time is reported for request,
and not for single run of gitweb script. This changes slightly
behavior in non-FastCGI case: the number of git commands reported is
1 less (running `git --version` one per gitweb is not counted now).
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jn/gitweb-fastcgi:
gitweb: Run in FastCGI mode if gitweb script has .fcgi extension
gitweb: Add support for FastCGI, using CGI::Fast
gitweb: Put all per-connection code in run() subroutine
Check if there is a caller in top frame of gitweb, and either 'return'
if gitweb code is wrapped in subroutine, or 'exit' if it is not.
This should avoid
gitweb.cgi: Subroutine git_SOMETHING redefined at gitweb.cgi line NNN
warnings in error_log when running gitweb with mod_perl (using
ModPerl::Registry handler)
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The name of the key has to be the same in call site handle_errors_html
and in called subroutine that uses it, i.e. git_header_html.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the name of the script ($SCRIPT_NAME or $SCRIPT_FILENAME CGI
environment variable, or __FILE__ literal) ends with '.fcgi'
extension, run gitweb in FastCGI mode, as if it was run with
'--fastcgi' / '--fcgi' option.
This is intended for easy deploying gitweb using FastCGI
interface.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jn/gitweb-caching-prep:
gitweb: Move generating page title to separate subroutine
gitweb: Add custom error handler using die_error
gitweb: Use nonlocal jump instead of 'exit' in die_error
gitweb: href(..., -path_info => 0|1)
Export more test-related variables when running external tests
Make git-format-patch (used by 'patch' and 'patches' views) use the
same rename detection options that git-diff and git-diff-tree (used
by 'commitdiff', 'blobdiff', etc.) use.
Signed-off-by: Pavan Kumar Sunkara <pavan.sss1991@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Acked-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Former run() subroutine got renamed to run_request(). The new run()
subroutine can run multiple requests at once if run as FastCGI script.
To run gitweb as FastCGI script you must specify '--fastcgi' / '-f'
command line option to gitweb, otherwise it runs as an ordinary CGI
script.
[jn: cherry picked from 56d7d436644ab296155a697552ea1345f2701620
in http://utsl.gen.nz/gitweb/?p=gitweb which was originally based
on v264 (2326acfa95) by Kay Sievers;
updated to reflect current gitweb code]
TODO: update 'gitweb/README' and/or 'gitweb/INSTALL' files.
Signed-off-by: Sam Vilain <sam.vilain@catalyst.net.nz>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
All code that is run per-connection (as opposed to those parts of gitweb
code that can be run once) is put into appropriate subroutines:
- evaluate_uri
- evaluate_gitweb_config
- evaluate_git_version (here only because $GIT can be set in config)
- check_loadavg (as soon as possible; $git_version must be defined)
- evaluate_query_params (counterpart to evaluate_path_info)
- evaluate_and_validate_params
- evaluate_git_dir (requires $project)
- configure_gitweb_features (@snapshot_fmts, $git_avatar)
- dispatch (includes setting default $action)
The difference is best viewed with '-w', '--ignore-all-space' option,
because of reindent caused by putting code in subroutines.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This refactoring (adding guess_file_syntax and run_highlighter
subroutines) is meant to make it easier in the future to add support
for other syntax highlighing solutions, or make it smarter by not
re-running `git cat-file` second time.
Instead of looping over list of regexps (keys of %highlight_type hash),
make use of the fact that choosing syntax is based either on full
basename (%highlight_basename), or on file extension (%highlight_ext).
Add some basic test of syntax highlighting (with 'highlight' as
prerequisite) to t/t9500-gitweb-standalone-no-errors.sh test.
While at it make git_blob Perl style prettier.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Acked-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It requires the 'highlight' program to do all the heavy-lifting.
This is loosely based on Daniel Svensson's and Sham Chukoury's work in
gitweb-xmms2.git (it cannot be cherry-picked, as gitweb-xmms2 first forked
wildly, then not contributed back, and then went stale).
[jn: cherry picked from bc1ed6aafd9ee4937559535c66c8bddf1864bec6
in http://repo.or.cz/w/git/dscho.git, with a few changes]
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Acked-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When $projects_list points to a directory, and git_get_projects_list
scans this directory for repositories, there can be generated the
following warnings (for persistent services like mod_perl or plackup):
Variable "$project_maxdepth" may be unavailable at gitweb.cgi line 2443.
Variable "$projectroot" may be unavailable at gitweb.cgi line 2451.
Those are false positives; silence those warnings by explicitely
declaring $project_maxdepth and $projectroot with 'our', as global
variables, in anonymous subrotine passed to File::Find::find.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
get_page_title subroutine is currently used only in git_header_html.
Nevertheless refactoring title generation allowed to reduce indent
level.
It would be used in more than one callsite in the patch adding caching
activity indicator to gitweb.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Acked-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Change the default message for errors (for fatalsToBrowser) to use
die_error() subroutine. This way errors (and explicitely calling 'die
MESSAGE') would generate 'Internal Server Error' error message.
Note that call to set_message is intentionally not put in BEGIN block;
we set error handler to use die_error() only after we are sure that we
can use it, after all needed variables are set.
Due to the fact that error handler set via set_message() subroutine
from CGI::Carp (in the fatalsToBrowser case) is called after HTTP
headers were already printed (with exception of MOD_PERL), gitweb
cannot return 'Status: 500 Internal Server Error'.
Thanks to the fact that die_error() no longer uses 'exit', errors
would be logged by CGI::Carp, independent on whether default error
handler is used, or handle_errors_html which uses die_error is used.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Acked-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use 'goto DONE' in place of 'exit' to end request processing in
die_error() subroutine. While at it, do not end gitweb with 'exit'.
This would make it easier in the future to add support or improve
support for persistent environments such as FastCGI and mod_perl.
It would also make it easier to make use of die_error() as an error
handler (for fatalsToBrowser).
Perl 5 allows non-local jumps; the restriction is that you cannot jump
into a scope.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Acked-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If named boolean option -path_info is passed to href() subroutine, it
would use its value to decide whether to generate path_info URL form.
If this option is not passed, href() queries 'pathinfo' feature to
check whether to generate path_info URL (if generating path_info link
is possible at all).
href(-replay=>1, -path_info=>0) is meant to be used to generate a key
for caching gitweb output; alternate solution would be to use freeze()
from Storable (core module) on %input_params hash (or its reference),
e.g.:
$key = freeze \%input_params;
or other serialization of %input_params.
While at it document extra options/flags to href().
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Acked-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Fix overeager early return in git_get_project_config, introduced in 9be3614
(gitweb: Fix project-specific feature override behavior, 2010-03-01). When
git_get_project_config is called from projects list page via
git_get_project_owner($path) etc., it is called with $git_dir defined (in
git_get_project_owner($path) etc.), but $project variable is not defined.
git_get_project_config doesn't use $project variable anyway.
Reported-by: Tobias Heinlein <keytoaster@gentoo.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit fixes a bug in processing project-specific override in
a situation when there is no project, e.g. for the projects list page.
When 'snapshot' feature had project specific config override enabled
by putting
$feature{'snapshot'}{'override'} = 1;
(or equivalent) in $GITWEB_CONFIG, and when viewing toplevel gitweb
page, which means the projects list page (to be more exact this
happens for any project-less action), gitweb would put the following
Perl warnings in error log:
gitweb.cgi: Use of uninitialized value $git_dir in concatenation (.) or string at gitweb.cgi line 2065.
fatal: error processing config file(s)
gitweb.cgi: Use of uninitialized value $git_dir in concatenation (.) or string at gitweb.cgi line 2221.
gitweb.cgi: Use of uninitialized value $git_dir in concatenation (.) or string at gitweb.cgi line 2218.
The problem is in the following fragment of code:
# path to the current git repository
our $git_dir;
$git_dir = "$projectroot/$project" if $project;
# list of supported snapshot formats
our @snapshot_fmts = gitweb_get_feature('snapshot');
@snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
For the toplevel gitweb page, which is the list of projects, $project is not
defined, therefore neither is $git_dir. gitweb_get_feature() subroutine
calls git_get_project_config() if project specific override is turned
on... but we don't have project here.
Those errors mentioned above occur in the following fragment of code in
git_get_project_config():
# get config
if (!defined $config_file ||
$config_file ne "$git_dir/config") {
%config = git_parse_project_config('gitweb');
$config_file = "$git_dir/config";
}
git_parse_project_config() calls git_cmd() which has '--git-dir='.$git_dir
There are (at least) three possible solutions:
1. Harden gitweb_get_feature() so that it doesn't call
git_get_project_config() if $project (and therefore $git_dir) is not
defined; there is no project for project specific config.
2. Harden git_get_project_config() like you did in your fix, returning early
if $git_dir is not defined.
3. Harden git_cmd() so that it doesn't add "--git-dir=$git_dir" if $git_dir
is not defined, and change git_get_project_config() so that it doesn't
even try to access $git_dir if it is not defined.
This commit implements both 1.) and 2.), i.e. gitweb_get_feature() doesn't
call project-specific override if $git_dir is not defined (if there is no
project), and git_get_project_config() returns early if $git_dir is not
defined.
Add a test for this bug to t/t9500-gitweb-standalone-no-errors.sh test.
Reported-by: Eli Barzilay <eli@barzilay.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This is a bit of future-proofing esc_html and friends: when called
with undefined value they would now would return undef... which would
probably mean that error would still occur, but closer to the source
of problem.
This means that we can safely use
esc_html(shift) || "Internal Server Error"
in die_error() instead of
esc_html(shift || "Internal Server Error")
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The error message (second argument to die_error) is meant to be short,
one-line text description of given error. A few callers call
die_error with error message containing unescaped user supplied data
($hash, $file_name). Instead of forcing callers to escape data,
simply call esc_html on the parameter.
Note that optional third parameter, which contains detailed error
description, is meant to be HTML formatted, and therefore should be
not escaped.
While at it update esc_html synopsis/usage, and bring default error
description to read 'Internal Server Error' (titlecased).
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Otherwise the errors can propagate, and show in damnest places, and
you would spend your time chasing ghosts instead of debugging real
problem (yes, it is from personal experience).
This follows (parts of) advice in `perldoc -f do` documentation.
This required restructoring code a bit, so we die only if we are reading
(executing) config file. As a side effect $GITWEB_CONFIG_SYSTEM is always
available, even when we use $GITWEB_CONFIG.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The chop_str subroutine is meant to be used on strings (such as commit
description / title) *before* HTML escaping, which means before
applying esc_html or equivalent.
Therefore get rid of the failed attempt to always remove full HTML
entities (like e.g. & or ). It is not necessary (HTML
entities gets added later), and it can cause chop_str to chop a string
incorrectly.
Specifically:
API & protocol: support option to force written data immediately to disk
from http://git.kernel.org/?p=daemon/distsrv/chunkd.git;a=commit;h=3b02f749df2cb1288f345a689d85e7061f507e54
The short version of the title gets chopped to
API ...
where it should be
API & protocol: support option to force written data...
Noticed-by: John 'Warthog9' Hawley <warthog9@kernel.org>
Signed-off-by: John 'Warthog9' Hawley <warthog9@kernel.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a 3rd, optional, parameter to die_error to allow for extended error
information to be output along with what the error was.
Signed-off-by: John 'Warthog9' Hawley <warthog9@kernel.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a function (named format_sort_th) that returns the string that
print_sort_th would print.
Signed-off-by: John 'Warthog9' Hawley <warthog9@kernel.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add a function (named format_local_time) that returns the string that
print_local_time would print.
Signed-off-by: John 'Warthog9' Hawley <warthog9@kernel.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
If one of $site_header, $site_footer or $home_text is not defined, you
get extraneous errors in the web logs, for example (line wrapped for
better readibility):
[Wed Jan 13 16:55:42 2010] [error] [client ::1] [Wed Jan 13 16:55:42 2010]
gitweb.cgi: Use of uninitialized value $site_header in -f at
/var/www/gitweb/gitweb.cgi line 3287., referer: http://git/gitweb.cgi
This ensures that those variables are defined before trying to use it.
Note that such error can happen only because of an error in gitweb
config file; building gitweb.cgi can make mentioned variables holding
empty string (it is even the default), but they are still defined.
Signed-off-by: John 'Warthog9' Hawley <warthog9@kernel.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This changes slightly the behavior of gitweb, so that it verifies
that the box isn't inundated with before attempting to serve gitweb.
If the box is overloaded, it basically returns a 503 Server Unavailable
until the load falls below the defined threshold. This helps dramatically
if you have a box that's I/O bound, reaches a certain load and you
don't want gitweb, the I/O hog that it is, increasing the pain the
server is already undergoing.
This behavior is controlled by $maxload configuration variable.
Default is a load of 300, which for most cases should never be hit.
Unset it (set it to undefined value, i.e. undef) to turn off checking.
Currently it requires that '/proc/loadavg' file exists, otherwise the
load check is bypassed (load is taken to be 0). So platforms that do
not implement '/proc/loadavg' currently cannot use this feature
(provisions are included for additional checks to be added by others).
There is simple test in t/t9501-gitweb-standalone-http-status.sh to
check that it correctly returns "503 Service Unavailable" if load is
too high, and also if there are any Perl warnings or errors.
Signed-off-by: John 'Warthog9' Hawley <warthog9@kernel.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jn/gitweb-blame:
gitweb: Add link to other blame implementation in blame views
gitweb: Make linking to actions requiring JavaScript a feature
gitweb.js: fix padLeftStr() and its usage
gitweb.js: Harden setting blamed commit info in incremental blame
gitweb.js: fix null object exception in initials calculation
gitweb: Minify gitweb.js if JSMIN is defined
gitweb: Create links leading to 'blame_incremental' using JavaScript
gitweb: Colorize 'blame_incremental' view during processing
gitweb: Incremental blame (using JavaScript)
gitweb: Add optional "time to generate page" info in footer
Conflicts:
Makefile
gitweb/gitweb.css
Add link to 'blame_incremental' action (which requires JavaScript) in
'blame' view, and add link to 'blame' action in 'blame_incremental'
view.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Let gitweb turn some links (like 'blame' links) into linking to actions
which require JavaScript (like 'blame_incremental' action) only if
'javascript-actions' feature is enabled.
This means that links to such actions would be present only if both
JavaScript is enabled and 'javascript-actions' feature is enabled.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* mr/gitweb-snapshot:
t/gitweb-lib: Split HTTP response with non-GNU sed
gitweb: Smarter snapshot names
gitweb: Document current snapshot rules via new tests
t/gitweb-lib.sh: Split gitweb output into headers and body
gitweb: check given hash before trying to create snapshot
Make git_history use git_log_generic, passing git_history_body as one
of its paramaters. This required changes to git_log_generic, in
particular passing more things as parameters.
While refactoring common code of 'log', 'shortlog' and 'history' view,
we did unify pagination, using always the form used by 'history' view,
namely
first * prev * next
in place of
HEAD * prev * next
used by 'log' and 'shortlog' views.
The 'history' view now supports commit limiting via 'hpb' parameter,
similarly to 'shortlog' (and 'log') view. Performance of 'history'
view got improved a bit, as it doesn't run git_get_hash_by_path for
"current" version in a loop. Error detection and reporting for
'history' view changed a bit.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Put the common parts of git_log and git_shortlog into git_log_generic
subroutine: git_log and git_shortlog are now thin wrappers calling
git_log_generic with appropriate arguments.
The unification of code responsible for 'log' and 'shorlog' actions
lead to the following changes in gitweb output
* 'tree' link in page_nav now uses $hash parameter, as was the case
for 'shortlog' but not for 'log'
* 'log' view now respect $hash_parent limiting, like 'shortlog' did
* 'log' view doesn't have special case for empty list anymore, and it
always uses page_header linking to summary view, like 'shortlog'
did.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Put the main part of 'log' view generation into git_log_body,
similarly how it is done for 'shortlog' and 'history' views (and
also for 'tags' and 'heads' views).
This is preparation for extracting common code between 'log',
'shortlog' and 'history' actions.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Teach gitweb how to produce nicer snapshot names by only using the
short hash id. If clients make requests using a tree-ish that is not
a partial or full SHA-1 hash, then the short hash will also be appended
to whatever they asked for. If clients request snapshot of a tag
(which means that $hash ('h') parameter has 'refs/tags/' prefix),
use only tag name.
Update tests cases in t9502-gitweb-standalone-parse-output.
Gitweb uses the following format for snapshot filenames:
<sanitized project name>-<version info>.<snapshot suffix>
where <sanitized project name> is project name with '.git' or '/.git'
suffix stripped, unless '.git' is the whole project name. For
snapshot prefix it uses:
<sanitized project name>-<version info>/
as compared to <sanitized project name>/ before (without version info).
Current rules for <version info>:
* if 'h' / $hash parameter is SHA-1 or shortened SHA-1, use SHA-1
shortened to to 7 characters
* otherwise if 'h' / $hash parameter is tag name (it begins with
'refs/tags/' prefix, use tag name (with 'refs/tags/' stripped
* otherwise if 'h' / $hash parameter starts with 'refs/heads/' prefix,
strip this prefix, convert '/' into '.', and append shortened SHA-1
after '-', i.e. use <sanitized hash>-<shortened sha1>
Signed-off-by: Mark Rada <marada@uwaterloo.ca>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In pathinfo mode, we use <base href> that refers to the base location
of gitweb in order for various external media links to work well.
However, this means that for the page to refer to itself, it must
regenerate full link, and this is exactly what the blob view page
did not do for line numbers.
Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
It's nice to search for an author by merely clicking on their name in
gitweb. This is usually faster than selecting the name, copying the
selection, pasting it into the search box, selecting between
author/committer and then hitting enter.
Linkify the avatar icon in log/shortlog view because the icon is directly
adjacent to the name and thus more related. The same is not true
when in commit/tag view where the icon is farther away.
Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The custom CGI escaping done in esc_param failed to escape UTF-8
properly. Fix by using CGI::escape on each sequence of matched
characters instead of sprintf()ing a custom escaping for each byte.
Additionally, the space -> + escape was being escaped due to greedy
matching on the first substitution. Fix by adding space to the
list of characters not handled on the first substitution.
Finally, remove an unnecessary escaping of the + sign.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The 'patch' view is about generating text/plain patch that can be
given to "git am", and "git am" doesn't understand merges anyway.
Therefore link to 'patch' view should not be shown for merge commits.
Also call to git-format-patch inside the 'patch' action would fail
when 'patch' action is called for a merge commit, with "Reading
git-format-patch failed" text as 'patch' view body.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Makes things nicer in cases when you hand craft the snapshot URL but
make a typo in defining the hash variable (e.g. netx instead of next);
you will now get an error message instead of a broken tarball.
Tests for t9501 are included to demonstrate added functionality.
Signed-off-by: Mark Rada <marada@uwaterloo.ca>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Add support for 'show-sizes' feature to show (in separate column,
between mode and filename) the size of blobs (files) in the 'tree'
view. It passes '-l' option to "git ls-tree" invocation.
For the 'tree' and 'commit' (submodule) entries, '-' is shown in place
of size; for generated '..' "up directory" entry nothing is shown.
The 'show-sizes' feature is enabled by default.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The new 'blame_incremental' view requires JavaScript to run. Not all
web browsers implement JavaScript (e.g. text browsers such as Lynx),
and not all users have JavaScript enabled. Therefore instead of
unconditionally linking to 'blame_incremental' view, we use JavaScript
to convert those links to lead to view utilizing JavaScript, by adding
'js=1' to link.
Currently the only action that takes 'js=1' into account is 'blame',
which then acts as if it was called as 'blame_incremental' action.
Possible enhancement would be to do JavaScript redirect by setting
window.location instead of modifying $format and $action in
git_blame_common() subroutine.
The only JavaScript-aware/using view is currently 'blame_incremental'.
While at it move reading JavaScript to git_footer_html() subroutine.
Note that in this view we do not add 'js=1' currently (even though
perhaps we should; note that for consistency we should also add 'js=1'
in links added by JavaScript part of 'blame_incremental').
This idea was originally implemented by Petr Baudis in
http://article.gmane.org/gmane.comp.version-control.git/47614
but it added <script> element with fixBlameLinks() function in page
header, to be added as onload event using 'onload' attribute of HTML
'body' element: <body onload="fixBlameLinks();">. This version adds
script at then end of page (in the page footer), and uses JavaScript
'window.onload=fixLinks();'. Also in Petr version only links marked
with 'blamelink' class were modified, and they were modified by
replacing "a=blame" by "a=blame_incremental"... which doesn't work for
path_info links, and might replace wrong part if there is "a=blame" in
project name, ref name or file name.
Slightly different solution was implemented by Martin Koegler in
http://thread.gmane.org/gmane.comp.version-control.git/47902/focus=47905
Here GitAddLinks() function was in gitweb.js file, not as contents of
<script> element. It was also included in page header (in <head>
element) though, which means waiting for a script to load (and run).
It was smarter in that to "fix" (modify) link, it split URL, modified
value of 'a' parameter, and then recreated modified link. It avoids
trouble with "a=blame" as substring in project name or file name, but
it doesn't work with path_info URL/link in the way it was written.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add 'blame_incremental' view, which uses "git blame --incremental"
and JavaScript (Ajax), where 'blame' use "git blame --porcelain".
* gitweb generates initial info by putting file contents (from
"git cat-file") together with line numbers in blame table
* then gitweb makes web browser JavaScript engine call startBlame()
function from gitweb.js
* startBlame() opens XMLHttpRequest connection to 'blame_data' view,
which in turn calls "git blame --incremental" for a file, and
streams output of git-blame to JavaScript (gitweb.js)
* XMLHttpRequest event handler updates line info in blame view as soon
as it gets data from 'blame_data' (from server), and it also updates
progress info
* when 'blame_data' ends, and gitweb.js finishes updating line info,
it fixes colors to match (as far as possible) ordinary 'blame' view,
and updates information about how long it took to generate page.
Gitweb deals with streamed 'blame_data' server errors by displaying
them in the progress info area (just in case).
The 'blame_incremental' view tries to be equivalent to 'blame' action;
there are however a few differences in output between 'blame' and
'blame_incremental' view:
* 'blame_incremental' always used query form for this part of link(s)
which is generated by JavaScript code. The difference is visible
if we use path_info link (pass some or all arguments in path_info).
Changing this would require implementing something akin to href()
subroutine from gitweb.perl in JavaScript (in gitweb.js).
* 'blame_incremental' always uses "rowspan" attribute, even if
rowspan="1". This simplifies code, and is not visible to user.
* The progress bar and progress info are still there even after
JavaScript part of 'blame_incremental' finishes work.
Note that currently no link generated by gitweb leads to this new view.
This code is based on patch by Petr Baudis <pasky@suse.cz> patch, which
in turn was tweaked up version of Fredrik Kuivinen <frekui@gmail.com>'s
proof of concept patch.
This patch adds GITWEB_JS compile configuration option, and modifies
git-instaweb.sh to take gitweb.js into account. The code for
git-instaweb.sh was taken from Pasky's patch.
Signed-off-by: Fredrik Kuivinen <frekui@gmail.com>
Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add "This page took XXX seconds and Y git commands to generate"
to page footer, if global feature 'timed' is enabled (disabled
by default). Requires Time::HiRes installed for high precision
'wallclock' time.
Note that Time::HiRes is being required unconditionally; this is
because setting $t0 variable needs to be done fairly early to have
running time of the whole script. If Time::HiRes module were required
only if 'timed' feature is enabled, the earliest place where starting
time ($t0) could be calculated would be after reading gitweb config,
making "time to generate page" info inaccurate.
This code is based on example code by Petr 'Pasky' Baudis.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* mr/gitweb-snapshot:
gitweb: add t9501 tests for checking HTTP status codes
gitweb: split test suite into library and tests
gitweb: improve snapshot error handling
* maint:
Fix overridable written with an extra 'e'
Documentation: git-archive: mark --format as optional in summary
Round-down years in "years+months" relative date view
* maint-1.6.3:
Fix overridable written with an extra 'e'
Documentation: git-archive: mark --format as optional in summary
Round-down years in "years+months" relative date view
* maint-1.6.2:
Fix overridable written with an extra 'e'
Documentation: git-archive: mark --format as optional in summary
Round-down years in "years+months" relative date view
Conflicts:
Documentation/git-archive.txt
The last check in the second block of checks in the &git_snapshot routine
is never executed because the second to last check is a superset of the
last check.
Switch the order of the last two checks. It has the advantage of giving
clients a more specific reason why they cannot get a snapshot format if
the format they have chosen is disabled.
Signed-off-by: Mark Rada <marada@uwaterloo.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* mr/gitweb-xz:
gitweb: add support for XZ compressed snapshots
gitweb: update INSTALL regarding specific snapshot settings
gitweb: support to globally disable a snapshot format
Since 4afbaef (gitweb: ref markers link to named shortlogs, 2008-09-02),
ref markers that accompany the subject in views such as shortlog and
history point to something different from the subject itself. Therefore,
they should not be included in the same <a> element.
Benefits of the change are:
* better compliance to the XHTML standards, that forbid links within
links even though the restriction cannot be imposed via DTD; this also
benefits visualization in some older browsers;
* when hovering the subject, only the subject itself is underlined; when
hovering the ref markers, only the text in the hovered ref marker is
underlined; previously, hovering any written part of the subject column
led to complete underlying of everything at the same time, with
unpleasing effects.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
* 'jn/gitweb-blame' (early part):
gitweb: Use light/dark for class names also in 'blame' view
gitweb: Add author initials in 'blame' view, a la "git gui blame"
gitweb: Mark commits with no "previous" in 'blame' view
gitweb: Use "previous" header of git-blame -p in 'blame' view
gitweb: Mark boundary commits in 'blame' view
gitweb: Make .error style generic
The XZ compression format uses the LZMA2 compression algorithm, which
often yields higher compression ratios than both GZip and BZip2 at the
cost of using more CPU time and RAM. XZ is the slowest for compression,
but still much faster than BZip2 for decompression, almost comparable
to GZip (see benchmarks below).
Some simple benchmarks show the pros and cons of using XZ compression;
starting with an already tarball'd archive of the repos listed below.
Memory usage seemed to be consistent for any given algorithm at their
respective default compression levels.
CPU: AMD Sempron 3400+ (1 core @ 1.8GHz with 256K L2 cache)
Virtual Memory Usage
GZip: 4152K BZip2: 13352K XZ: 102M
Linux 2.6 series (f5886c7f96f2542382d3a983c5f13e03d7fc5259) 349M
gzip 23.70s user 0.47s system 99% cpu 24.227 total 76M
gunzip 3.74s user 0.74s system 94% cpu 4.741 total
bzip2 130.96s user 0.53s system 99% cpu 2:11.97 total 59M
bunzip2 31.05s user 1.02s system 99% cpu 32.355 total
xz 448.78s user 0.91s system 99% cpu 7:31.28 total 51M
unxz 7.67s user 0.80s system 98% cpu 8.607 total
Git (0a53e9ddea) 11M
gzip 0.77s user 0.03s system 99% cpu 0.792 total 2.5M
gunzip 0.12s user 0.02s system 98% cpu 0.142 total
bzip2 3.42s user 0.02s system 99% cpu 3.454 total 2.1M
bunzip2 0.95s user 0.03s system 99% cpu 0.984 total
xz 12.88s user 0.14s system 98% cpu 13.239 total 1.9M
unxz 0.27s user 0.03s system 99% cpu 0.298 total
XZ (669413bb2db954bbfde3c4542fddbbab53891eb4) 1.8M
gzip 0.12s user 0.00s system 95% cpu 0.132 total 442K
gunzip 0.02s user 0.00s system 97% cpu 0.027 total
bzip2 1.28s user 0.01s system 99% cpu 1.298 total 363K
bunzip2 0.15s user 0.01s system 100% cpu 0.157 total
xz 1.62s user 0.03s system 99% cpu 1.652 total 347K
unxz 0.05s user 0.00s system 99% cpu 0.058 total
From a time and memory perspective, nothing compares to GZip, but if
given an average upload speed of 20KB/s, it would take ~400 seconds
longer to transfer the BZip2'd kernel snapshot than the XZ snapshot;
the transfer time difference is even greater between GZip and XZ. The
real time savings are relatively the same for all test cases, but less
dramatic for smaller repositories.
XZ decompresses ~1.8-2 times slower than GZip, and ~2.7-3.75 times
faster than BZip2; XZ gets relatively faster as snapshots get larger.
However, XZ takes relatively longer to compress as snapshots get larger.
The downside for XZ'd snapshots is the large CPU and memory load put on
the server to generate the compressed snapshot, though XZ will
eventually
have threading support, and the real clock time for making XZ'd
snapshots
would decrease if the server had a beefy multi-core CPU.
XZ compression is disabled by default to allow upgrades to take place
without any surprises, as the CPU and memory requirements will be an
issue for high load or lightweight servers. Also, the XZ format is still
new (format declared stable ~6 months ago), and there have been no
"stable" releases of the utils yet.
Signed-off-by: Mark Rada <marada@uwaterloo.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Allow Gitweb administrators to set a 'disabled' key in the
%known_snapshot_formats hash to disable a specific snapshot format.
All formats are enabled by default to maintain backwards compatibility.
Signed-off-by: Mark Rada <marada@uwaterloo.ca>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Call to_utf8 when parsing author and committer names, otherwise they will appear
with bad encoding if they written by using chop_and_escape_str.
Signed-off-by: Zoltán Füzesi <zfuzesi@eaglet.hu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Equality between file_parent and file_name was being checked without a
preliminary check for existence of the parameters.
Fix by wrapping the equality check in appropriate if (defined ...),
rearranging the lines to prevent excessive length.
Signed-off-by: Giuseppe Bilotta <giuseppe.bilotta@gmail.com>
Acked-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Instead of using "light2" and "dark2" for class names in 'blame' view
(in place of "light" and "dark" classes in other places) to avoid
changing style on hover in 'blame' view while doing it for other views
(like 'shortlog'), use more advanced CSS, relying on the fact that
more specific selector wins.
While at it add a few comments to gitweb CSS file, and consolidate
some repeated info.
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
For example for "Junio C Hamano" initials would be "JH". Of course
initials are added (below shortened SHA-1 of blamed commit) only if
group of lines that blame the same commit has 2 or more lines in it.
Initials are extracted using i18n /\b([[:upper:]])\B/g regexp.
Additionally initials help to distinguish boundary commits, as they
use bold weight font too (in addition to shortened SHA-1 of commit).
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Use "no-previous" class to mark blamed commits which do not have
"previous" header. Those are commits in which blamed file was created
(added); this includes boundary commits. This means that 'linenr'
link leads to blamed commit, not (one of) parent of blamed commit.
Therefore currently line number for such commit uses bold weight font
to denote this situation; the effect is subtle.
Use "multiple-previous" class in the opposite situation, where blamed
commit has multiple "previous" headers (is an evil merge). Currently
this class is not used for styling. In this situation 'linenr' link
leads to first of "previous" commits (first parent).
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
