The display of the current row number would stop working if the user
clicked on a line, or if selectedline got unset for any other reason,
because the trace on it got lost when it was unselected.  This fixes
it by changing the places that unset selectedline to set it to the
empty string instead, and the places that tested for it being set or
unset to compare it with the empty string.  Thus it never gets unset
now.  This actually simplified the code in a few places since it can
be compared for equality with a row number now without first testing
if it is set.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NMichele Ballabio <barra_cuda@katamail.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This fixes the Tk error "wrong # coordinates: expected 0 or 4, got 2"
that sometimes occurred when reloading.  The problem was that we didn't
unset the variables containing the canvas item id numbers for the
displayed rows when we cleared the canvases.  Thus make_secsel would
think it had something to do when it didn't.

Thanks to Michele Ballabio for finding a way to trigger the bug
reliably.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Now that git checkout reports progress when checking out files, we
can use that to provide a progress bar in gitk.  We re-use the green
progress bar (formerly used when reading stuff in) for that.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This adds a couple of fields in the bar just below the upper panes
that show the row number of the currently selected commit, and how
many rows are displayed in total.  The latter increments as commits
are read in, and thus functions to show that progress is being made.
This therefore also removes the code that showed progress using a
green oscillating bar in the progress bar window (which some people
disliked).
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This allows gitk to run an external diff viewer such as meld.

Right-click on a file in the file list view gives "External diff"
popup menu entry, which launches the selected external diff tool.
The menu entry is only active in "Patch" mode, not in "Tree" mode.

The program to run to display the diff is configurable through
Edit/Preference/External diff tool.  The program is run with two
arguments, being the names of files containing the two versions to
diff.  Gitk will create temporary directories called
.gitk-tmp.<pid>/<n> to place these files in, and remove them when
it's finished.

If the file doesn't exist in one or other revision, gitk will supply
/dev/null as the name of the file on that side of the diff.  This may
need to be adjusted for Windows or MacOS.

[paulus@samba.org - cleaned up and rewrote some parts of the patch.]
Signed-off-by: NThomas Arcila <thomas.arcila@gmail.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This is based on a patch by Eric Raible <raible@gmail.com>, but does
things a bit more simply.

Previously, 'b', backspace, and delete all did the same thing.
This changes 'b' to perform the inverse of 'f'.  And both of
them now highlight the filename of the currently diff.

This makes it easier to review and navigate the diffs associated
with a particular commit using only f, b, and space because the
filename of the currently display diff will be dynamically
highlighted.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This goes back to the method of doing updates where we translate the
revisions we're given to SHA1 ids and then remove the ones we've asked
for before or that we've already come across.  This speeds up updates
enormously in most cases since it means git log doesn't have to traverse
large parts of the tree.  We used to do this, but it had bugs, and commit
468bcaed (gitk: Don't filter view
arguments through git rev-parse) went to the slower method to avoid the
bugs.

In order to do this properly, we have to parse the command line and
understand all the flag arguments.  So this adds a parser that checks
all the flag arguments.  If there are any we don't know about, we
disable the optimization and just pass the whole lot to git log
(except for -d/--date-order, which we remove from the list).

With this we can then use git rev-parse on the non-flag arguments to
work out exactly what SHA1 ids are included and excluded in the list,
which then enables us to ask for just the new ones when updating.
One wrinkle is that we have to turn symmetric diff arguments (of the
form a...b) back into symmetric diff form so that --left-right still
works, as git rev parse turns a...b into a b ^merge_base(a,b).

This also updates a couple of copyright notices.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

When we are on a detached head - since gitk does not display where
we are - reset has no sense, so disable the relevant line on the
context menu, and point out to the user that we are on a detached head.

Otherwise, a reset from gitk when on a detached head returns the
error:

can't read "headids()": no such element in array
can't read "headids()": no such element in array
    while executing
"removehead $headids($name) $name"
    (procedure "movehead" line 4)
    invoked from within
"movehead $newhead $mainhead"
    (procedure "readresetstat" line 20)
    invoked from within
"readresetstat file4"
    ("eval" body line 1)
    invoked from within
"eval $script"
    (procedure "dorunq" line 9)
    invoked from within
"dorunq"
    ("after" script)

[paulus@samba.org: changed menu item to "Detached head: can't reset"]
Signed-off-by: NMichele Ballabio <barra_cuda@katamail.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This includes suggestions by Stephan Beyer.
Signed-off-by: NChristian Stimming <stimming@tuhh.de>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NChristian Stimming <stimming@tuhh.de>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

The msg-files msgs/*.msg used to be installed with mode 755 although
they're not executables.  With this commit, files are forced to be
installed with mode 644, directories and executables with mode 755.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NPaul Mackerras <paulus@samba.org>

I copied the Italian translation and translated the strings
to Spanish starting from there.  This incorporates suggestions
from Wincent Colaiuta and Carlos Rica.
Signed-off-by: NSantiago Gala <sgala@apache.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Alex Riesen pointed out that displaying a commit in 'tree' mode fails
if some files have names with special characters such as '{' or '}' in
them, due to the fact that we treat the line returned from git ls-tree
as a Tcl list at one point.

This fixes it by doing what I originally intended but didn't quite
get right.  We split the line from git ls-tree at the first tab and
treat the part before the tab as a list (which is OK since it doesn't
have special characters in it) and the part after the tab as the
filename.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This moves the scanning of the argument list for each view into a
new function, parseviewargs, which is called from start_rev_list.
This also makes the date mode and the merge mode be per-view rather
than global.  In merge mode, we work out the list of relevant files
in a new function called from start_rev_list, so it will be updated
on File->Reload.  Plus we now do that after running the argscmd, so
if we have one and it generates a -d or --merge option they will be
correctly handled now.

The other thing this does is to make errors detected in start_rev_list
not be fatal.  Now instead of doing exit 1 we just pop up and error
window and put "No commits selected" in the graph pane.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

With tcl/tk8.5 the lset command seems to behave differently.  When
changing the background color through Edit->Preferences, the changes
are applied, but new dialogs, such as View->New view... barf with

 Error: unknown color name "{#ffffff}"

Additionally when closing gitk, and starting it up again, a bad value
has been saved to ~/.gitk, preventing gitk from running properly; it
fails with

 Error in startup script: unknown color name "{#ffffff}"
 ...

This commit fixes the problem by changing the color dialogs to pass
the empty string {} as the list index to choosecolor.  This causes
the lset and lindex commands used by choosecolor to use and set the
whole variable (bgcolor, fgcolor or selectbgcolor) rather than
treating them as a 1-element list.  Tested with tcl/tk8.4 and 8.5.

Dmitry Potapov reported this problem through
 http://bugs.debian.org/472615Signed-off-by: NGerrit Pape <pape@smarden.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NMichele Ballabio <barra_cuda@katamail.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This is a similar change to that submitted by Junio C Hamano for
git-gui.  It tests whether the msgfmt command can be run successfully
with --tcl, -l and -d, and if not, falls back to using po/po2msg.sh.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Michele Ballabio <barra_cuda@katamail.com> pointed out that gitk
sometimes throws a Tcl error (can't read "yscreen") when switching
views, and proposed a patch.  This is a different way of fixing it
which is a bit neater.  Basically, in showview we only set yscreen if
the selected commit is on screen to start with, and then we only
scroll the canvas to bring it onscreen if yscreen is set and the
same commit exists in the new view.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Launching gitk on a bare repository or a .git directory
would previously show the work tree as having removed all
files.  We now inhibit showing local changes when gitk
is not launched from within a work tree.
Signed-off-by: NDavid Aguilar <davvid@gmail.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Adding horizontal scroll bar makes the scrolling feature more
discoverable to the users.  The horizontal scrollbar is a bit narrower
than vertical ones so we don't make too big impact on available screen
real estate.  The text and scrollbar widget layout is done using grid
geometry manager.

An interesting side effect of Tk scrollbars is that the "elevator"
size changes depending on the visible content. So the horizontal
scrollbar "elevator" changes as the user scrolls the view up and down.
Signed-off-by: NPekka Kaitaniemi <kaitanie@cc.helsinki.fi>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Whenever a commit is selected in the graph pane, its SHA1 is
automatically put into the selection buffer for cut and paste.
However, some users may find this behavior annoying since it can
overwrite something they actually wanted to keep in the buffer.

This makes the behavior optional under the name "Auto-select SHA1",
but continues to default to "on".
Signed-off-by: NJeff King <peff@peff.net>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Signed-off-by: NMichele Ballabio <barra_cuda@katamail.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This allows gitk to be used to display a different set of refs each
the display is refreshed.  This is useful when gitk is called from
other porcelain suites, for doing such things as displaying the set of
patches in a patch stack.

The user specifies a command as the argument to the --argscmd option.
The command is run initially and each time the display is refreshed,
and is expected to generate a list of commit IDs, one per line.  Those
commits are appended to the commits passed on the command-line when
constructing the git log command to be executed.

The command is considered to be an attribute of a view, and has its
own field in the saved view, and an edit field in the view editor.
Signed-off-by: NYann Dirson <ydirson@altern.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This also limits the window size to the screen size.  That is better
than nothing, but it isn't perfect, since ideally we would take into
account window decorations, and things such as gnome panels or the
Mac OS X dock and menu bar, but I don't know how to do that.

On Cygwin this is as good as restoring the whole geometry (size and
position) at working around the Cygwin Tk bugs, according to Mark
Levedahl.
Tested-by: NMark Levedahl <mlevedahl@gmail.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Since we limit the rate at which we do updates to the canvas scrolling
regions, it's possible to get into selectline for a row that is
outside the currently-set scrolling region.  When this happens,
selectline can't scroll to show the selected line, and as a
consequence, drawvisible chooses some other bogus row to be the
target row.

This fixes it by calling setcanvscroll from selectline in this case.
We also set selectedline (and currentid) before calling drawvisible
so that drawvisible makes the right choice of target row.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Occasionally I see a crash in selectline with commitinfo($id) not
set.  This makes sure it is set by calling getcommit $id if it isn't.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

First, insertfakerow and removefakerow weren't updating vrowmod,
and hence displayorder was not getting updated when it needed to,
in the case where the fake row was being inserted into or removed
from the last arc.  The comparison of varctok vs vtokmod was moved
into modify_arc for these cases (and for the call in rewrite_commit)
to avoid duplicating the extra code needed.  Second, the logic in
update_arcrows didn't end up truncating displayorder and unsetting
cached_commitrow if the first modified row was in the last arc.
This fixes these problems.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

... instead of "git rev-list", since we now use git log for
generating the list of commits.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Previously we passed the arguments indicating what commits the user
wants to view through git rev-parse to get a list of IDs (positive and
negative), then gave that to git log.  This had a couple of problems,
notably that --merge and --left-right didn't get handled properly.

Instead we now just pass the original arguments to git log.  When doing
an update, we append --not followed by the list of commits we have seen
that have no children, since we have got (or will get) their ancestors
from the first git log.  If the first git log isn't finished yet, we
might get some duplicates from the second git log, but that doesn't
cause any problem.

Also get rid of the unused vnextroot variable.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Occasionally the target row stuff would scroll the display to some
uninteresting commit while reading.  There were two problems: one
was that drawvisible would set targetrow even if there was no target
previously and no row selected, and the other was that it was possible
for the target row to get pushed down past numcommits, if drawvisible
was called after rows were added but before layoutmore got run.

The first problem is fixed by just not setting targetrow/id unless
there is a selected row or they were set previously.

The second problem is fixed by updating numcommits immediately new
rows are added.  This leads to a simplification of layoutmore and
chewcommits but also means that some of the things that were done in
layoutmore now need to be done elsewhere, since layoutmore can no
longer use numcommits to know how much it has seen previously.
Hence the changes to getcommits, initlayout and setcanvscroll.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

When updating the graph, gitk uses a git log command with commit
limiting in order to get just the new commits.  When path limiting
is also in effect, git log rewrites the parents of the commits it
outputs in order to represent just the subgraph that modifies the
listed paths, but it doesn't rewrite the parents on the boundary
of the graph.  The result is that when updating, git log does not
give gitk the information about where the new commits join in to
the existing graph.

This solves the problem by explicitly rewriting boundary parents
when updating.  If we are updating and are doing path limiting,
then when gitk finds an unlisted commit (one where git log puts a
"-" in front of the commit ID to indicate that it isn't actually
part of the graph), then gitk will execute:

    git rev-list --first-parent --max-count=1 $id -- paths...

which returns the first ancestor that affects the listed paths.
(Currently gitk executes this synchronously; it could do it
asynchronously, which would be more complex but would avoid the
possibility of the UI freezing up if git rev-list takes a long time.)

Then, if the result is a commit that we know about, we rewrite the
parents of the children of the original commit to point to the new
commit.  That is mostly a matter of adjusting the parents and children
arrays and calling fix_reversal to fix up the graph.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Because we weren't fixing up vlastins when moving an arc from one
place to another, it was possible for us later to decide to move
an arc to the wrong place, and end up with an arc disconnected from
the rest of the graph.  This fixes it by updating vlastins when
necessary.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

This fixes a bug in updating the graph after we have cherry-picked
a commit in gitk and then added some new stuff externally.  First,
we weren't updating viewincl with the new head added by the cherry-
pick.  Secondly, getcommitlines was doing bad things if it saw a
commit that was already in the graph (was already in an arc).  This
fixes both things.  If getcommitlines sees a commit that is already
in the graph, it ignores it unless it was not listed before and is
listed now.  In that case it doesn't assign it a new arc now, and
doesn't re-add the commit to its arc.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

There is an edit box where the number of context lines can be chosen.
But it was only used when regular diffs were displayed, not for
merge commits.   This fixes it.
Signed-off-by: NJohannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

It's really not very easy to visualize the commit walker,
because - on purpose - it obvously doesn't show the
uninteresting commits!

We will soon add a "--show-all" flag to the revision walker,
which will make it show uninteresting commits too, and they'll
have a '^' in front of them.

This is to update 'gitk' to show those negative commits in gray
to futureproof it.
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>