Since bc7a96a (mergetool--lib: Refactor tools into separate files,
2011-08-18), it is possible to add a new diff tool by creating a simple
script in the '$(git --exec-path)/mergetools' directory. Updating the
difftool help text is still a manual process, and the documentation can
easily go out of sync.
This commit teaches difftool the '--tool-help' option, which:
- Reads the list of valid tools from 'mergetools/*'
- Determines which of them are actually installed
- Determines which are capable of diffing (i.e. not just a merge tool)
- Prints the resulting list for the user
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When 'difftool' is called to compare a range of commits that modify
more than one file, it opens a separate instance of the diff tool for
each file that changed.
The new '--dir-diff' option copies all the modified files to a temporary
location and runs a directory diff on them in a single instance of the
diff tool.
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Removing this function shortens the code and makes it easier to read.
Now all environment variables are set as part of procedural operation.
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The system call to Git works the same whether or not ".exe" is
appended to "git". The extra code is not necessary.
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Adding the script directory to PATH is not needed. The script is
located at '$(git --exec-path)', which is already on the PATH.
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Prior to this commit, the script exited with an error whenever the
usage string was printed, regardless of the reason it was done. In
cases where usage was printed due to a user request (e.g. '-h'
option), the script should exit without error (exit 0).
This commit adds an argument to the usage function that allows the
exit code to be specified when the function is called.
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit teaches difftool to handle the '--no-gui' option. This option
negates the existing '--gui' option. The last setting given on the command
line wins.
This allows a user to configure "[alias] mdt = difftool --gui", but still
have the ability to override the setting without error:
$ git mdt --no-gui
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Replace custom option/argument parser with standard Getopt::Long
module. This shortens the code and makes it easier to understand.
Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A few scripted Porcelain implementations pretend as if the routine to show
their own help messages are triggered upon "git cmd --help", but a command
line parser of "git" will hijack such a request and shows the manpage for
the cmd subcommand.
Leaving the code to handle such input is simply misleading.
Signed-off-by: Clemens Buchacher <drizzd@aon.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In particular, test 14 'difftool last flag wins' in t7800 fails.
This is caused by git-difftool.perl passing both GIT_DIFFTOOL_NO_PROMPT
(='true') and GIT_DIFFTOOL_PROMPT (='true') to the difftool helper
script. Despite the appropriate key being deleted from the ENV
hash, it seems that once a key has been set in the hash, it gets
passed along to the system() call. (ie deleting the key does not
do the equivalent of unsetenv()).
In order to fix the problem, we keep track of the required prompt
state while processing the arguments, and then set the relevant
ENV hash key only once at the end.
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
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 <$fh>;
}
Which when executed dies on "Can't use an undefined value as
filehandle reference". Several of our tests also fail on 5.6 (even
more when compiled with NO_PERL_MAKEMAKER=1):
t2016-checkout-patch.sh
t3904-stash-patch.sh
t3701-add-interactive.sh
t7105-reset-patch.sh
t7501-commit.sh
t9700-perl-git.sh
Our code is bitrotting on 5.6 with no-one interested in fixing it, and
pinning us to such an ancient release of Perl is keeping us from using
useful features introduced in the 5.8 release.
The 5.6 series is now over 10 years old, and the 5.6.2 maintenance
release almost 7. 5.8 on the other hand is more than 8 years old.
All the modern Unix-like operating systems have now upgraded to it or
a later version, and 5.8 packages are available for old IRIX, AIX
Solaris and Tru64 systems.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Tor Arntsen <tor@spacetec.no>
Acked-by: Randal L. Schwartz <merlyn@stonehenge.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
When diff.guitool is unconfigured and "--gui" is specified
git-difftool dies with the following error message:
config diff.guitool: command returned error: 1
Catch the error so that the "--gui" flag is a no-op when
diff.guitool is unconfigured.
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This adds '-x' as a shorthand for the '--extcmd' option.
Arguments to '--extcmd' can be specified separately, which
was not originally possible.
This also fixes the brief help text so that it mentions
both '-x' and '--extcmd'.
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-difftool requires difftool.<tool>.cmd configuration even when
tools use the standard "$diffcmd $from $to" form. This teaches
git-difftool to run these tools in lieu of configuration by
allowing the command to be specified on the command line.
Reference: http://article.gmane.org/gmane.comp.version-control.git/133377
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Users might prefer to have git-difftool use a different
tool when run from a Git GUI.
This teaches git-difftool to honor 'diff.guitool' when
the '--gui' option is specified. This allows users to
configure their preferred command-line diff tool in
'diff.tool' and a GUI diff tool in 'diff.guitool'.
Reference: http://article.gmane.org/gmane.comp.version-control.git/133386
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
In ActivetState Perl, exec does not wait for the started program. This
breaks difftool tests and may cause unexpected behaviour: git difftool
has returned, but the rest of code (diff and possibly the interactive
program are still running in the background.
Acked-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
difftool now supports difftool.prompt so that users do not have to
pass --no-prompt or hit enter each time a diff tool is launched.
The --prompt flag overrides the configuration variable.
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This prepares 'git-difftool' and its documentation for
mainstream use.
'git-difftool-helper' became 'git-difftool--helper'
since users should not use it directly.
'git-difftool' was added to the list of commands as
an ancillaryinterrogator.
Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Tim Henigan
Clemens Buchacher
Ramsay Jones
Ævar Arnfjörð Bjarmason
David Aguilar
Alex Riesen