This is actually just an underlying code improvement that has no user
visible component yet. UI improvements to actually fetch and merge via
an arbitrary remote with no tracking branches must still follow to make
this change useful for the end-user.
Our tracking branch specifications are a Tcl list of three components:
- local tracking branch name
- remote name/url
- remote branch name/tag name
This change just makes the first element optional. If it is an empty
string we will run the fetch, but have the value be saved only into the
special .git/FETCH_HEAD, where we can pick it up and use it for this one
time operation.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
I totally missed this obvious optimization in the checkout code path.
If our current repository HEAD is actually at the commit we are moving
to, and we agreed to perform this switch earlier, then we have no files
to update in the working directory and any stale mtimes are simply not
of consequence right now. We can pretend like we ran a read-tree and
skip right into the post-read-tree work, such as updating the branch
and setting the symbolic-ref.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
If we are given a merge type we don't understand in checkout_op there
is probably a bug in git-gui somewhere that allowed this unknown merge
strategy to come into this part of the code path. We currently only
recognize three merge types ('none', 'ff' and 'reset') but are going
to be supporting more in the future. Rather than keep editing this
message I'm going with a very generic "Uh, we don't do that!" type of
error.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
In both the ff and reset merge_types supported by checkout_op the
result is the same if the merge base of our target commit and the
existing commit is the existing commit: its a fast-forward as the
existing commit is fully contained in the target commit.
This minor cleanup in logic will make it easier to implement a
new kind of merge_type that actually merges the two trees with a
real merge strategy, such as git-merge-recursive.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
I've decided to teach checkout_op how to perform more than just a
fast-forward and reset type of merge. This way we can also do a full
recursive merge even when we are recreating an existing branch from
a remote. To help with that process I'm saving the merge-base we
computed during the ff/reset/fail decision process, in case we need
it later on when we actually start a true merge operation.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
A few users have been seeing crashes in Tk when using the undo key
binding to undo the last few keystroke events in the commit buffer.
Unfortunately that means the user loses their commit message and
must start over from scratch when the user restarts the process.
git-gui now saves the user's commit message buffer every couple of
seconds to a temporary file under .git (specifically .git/GITGUI_BCK).
At exit time we rename this file to .git/GITGUI_MSG if there is a
message, the file exists, and it is currently synchronized with the
Tk buffer. Otherwise we do our usual routine of saving the Tk buffer
to .git/GITGUI_MSG and delete .git/GITGUI_BCK, if it exists.
During startup we favor .git/GITGUI_BCK over .git/GITGUI_MSG. This
way a crash doesn't take out the user's message buffer but instead
will cause the user to lose only a few keystrokes. Most people do
not type more than 200 WPM, and with 30 possible saves per minute
we are unlikely to lose more than 7 words.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
I'm working on refactoring the UI of the merge dialog, because as it
currently stands the dialog is absolutely horrible, especially when
you have 200+ branches available from a single remote system.
In that refactoring I plan on using the choose_rev widget to allow
the user to select exactly which branch/commit they want to merge.
However since that only selects a single commit I'm first removing
the code that supports octopus merges.
A brief consultation on #git tonight seemed to indicate that the
octopus merge strategy is not as useful as originally thought when
it was invented, and that most people don't commonly use them. So
making users fall back to the command line to create an octopus is
actually maybe a good idea here, as they might think twice before
they use it.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
If we haven't yet loaded any commit information for a given line but
our tooltip timer fired and tried to draw the tooltip we shouldn't;
there is nothing to show.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This is a essentially a copy of Paul Mackerras encoding support from
gitk. I stole the code from gitk commit fd8ccbec4f0161, as Paul has
already done all of the hard work setting up this translation table.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
I've found that the class code makes it a whole lot easier to create
more complex GUI code, especially the dialogs. So before I make any
major improvements to the merge dialog's interface I'm going to first
switch it to use the class system, so the code is slightly cleaner.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Showing only five lines of heads/tags is not very useful to a user
when they have about 10 branches that match the filter expression.
The list is just too short to really be able to read easily, at
least not without scrolling up and down. Expanding the list out
to 10 really makes the revision picker easier to read and access,
as you can read the matching branches much more quickly.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
We now allow users to pick which commit they want to browse through
our revision picking mega-widget. This opens up in a dialog first,
and then opens a tree browser for that selected commit. It is a very
simple approach and requires minimal code changes.
I also clarified the language a bit in the Repository menu, to show
that these actions will access files. Just in case a user is not
quite sure what specific action they are looking for, but they know
they want some sort of file thing.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Like our blame subcommand the browser subcommand now accepts both
a revision and a path, just a revision or just a path. This way
the user can start the subcommand on any branch, or on any subtree.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
I'm moving the code related to looking to see if we should GC now
into a procedure closer to where it belongs, the database module.
This reduces our script by a few lines for the single commit case
(aka citool). But really it just is to help organize the code.
We now perform the check after we have been running for at least
1 second. This way the main window has time to open up and our
dialog (if we open it) will attach to the main window, instead of
floating out in no-mans-land like it did before on Mac OS X.
I had to use a wait of a full second here as a wait of 1 millisecond
made our console install itself into the main window. Apparently we
had a race condition with the console code where both the console and
the main window thought they were the main window.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
If we have more than our desired number of objects and we try to
open the "Do you want to repack now?" dialog we cannot include a
-parent . argument if the main window has not been mapped yet.
On Mac OS X it appears this window isn't mapped right away, so we
had better hang avoid including it.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
On Windows (which includes Cygwin) Tcl defaults to leaving the EOF
character of input file streams set to the ASCII EOF character, but
if that character were to appear in the data stream then Tcl will
close the channel early. So we have to disable eofchar on Windows.
Since the default is disabled on all platforms except Windows, we
can just disable it everywhere to prevent any sort of read problem.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This cat-file was done on maint, where we did not have git_read
available to us. But here on master we do, so we should make
use of it.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
From Johannes Sixt <J.Sixt@eudaptics.com>:
> It seems that MSYS's wish does some quoting for Bourne shells,
> in particular, escape the first '{' of the "^{tree}" suffix, but
> then it uses cmd.exe to run "git rev-parse". However, cmd.exe does
> not remove the backslash, so that the resulting rev expression
> ends up in git's guts as unrecognizable garbage: rev-parse fails,
> and git-gui hickups in a way that it must be restarted.
Johannes originally submitted a patch to this section of commit.tcl
to use `git rev-parse $PARENT:`, but not all versions of Git will
accept that format. So I'm just taking the really simple approach
here of scanning the first line of the commit to grab its tree.
About the same cost, but works everywhere.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Because we are trying to execute /bin/sh we know it must be a real
Windows executable and thus ends with the standard .exe suffix.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
We cannot execute the git directory, it is not a valid Tcl command
name. Instead we just want to pass it as an argument to our sq
proc.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
If we get more than 80 characters of text in a single line odds
are it is output from git-fetch or git-push and its showing a
lot of detail off to the right edge that is not so important to
the average user. We still want to make sure we show everything
we need, but we can get away with that information being off to
the side with a horizontal scrollbar.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Our file browser was showing bad output as it did not properly buffer
a partial record when read from `ls-tree -z`. This did not show up on
my Mac OS X system as most trees are small, the pipe buffers generally
big and `ls-tree -z` was generally fast enough that all data was ready
before Tcl started to read. However on my Cygwin system one of my
production repositories had a large enough tree and packfile that it
took a couple of pipe buffers for `ls-tree -z` to complete its dump.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
We now embed any GIT_* and SSH_* environment variables as well as
the path to the git wrapper executable into the Mac OS X .app file.
This should allow us to restore the environment properly when
we restart.
We also try to use proper Bourne shell single quoting when we can,
as this avoids any sort of problems that might occur due to a path
containing shell metacharacters.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Now that we are pretty strict about setting up own absolute paths to
any git helper (saving a marginal runtime cost to resolve the tool)
we can do the same in our console widget by making sure all console
execs go through git_read if they are a git subcommand, and if not
make sure they at least try to use the Tcl 2>@1 IO redirection if
possible, as it should be faster than |& cat.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Rather than making the C library search for git every time we want
to execute it we now search for the main git wrapper at startup, do
symlink resolution, and then always use the absolute path that we
found to execute the binary later on. This should save us some
cycles, especially on stat challenged systems like Cygwin/Win32.
While I was working on this change I also converted all of our
existing pipes ([open "| git ..."]) to use two new pipe wrapper
functions. These functions take additional options like --nice
and --stderr which instructs Tcl to take special action, like
running the underlying git program through `nice` (if available)
or redirect stderr to stdout for capture in Tcl.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Sometimes switching between branches can take more than a second or
two, in which case `git checkout` would normally have shown a small
progress meter to the user on the terminal to let them know that we
are in fact working, and give them a reasonable idea of when we may
finish.
We now do obtain that progress meter from read-tree -v and include
it in our main window's status bar. This allows users to see how
many files we have checked out, how many remain, and what percentage
of the operation is completed. It should help to keep users from
getting bored during a large checkout operation.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Now that we have a fancy status bar mega-widget we can reuse that
within our main window. This opens the door for implementating
future improvements like a progress bar.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Our blame viewer has had a very fancy progress bar at the bottom of
the window that shows the current status of the blame engine, which
includes the number of lines completed as both a text and a graphical
meter. I want to reuse this meter system in other places, such as
during a branch switch where read-tree -v can give us a progress
meter for any long-running operation.
This change extracts the code and refactors it as a widget that we
can take advantage of in locations other than in the blame viewer.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
If the user double clicks a branch in the checkout dialog then they
probably want to start the checkout process on that branch. I found
myself doing this without realizing it, and of course it did nothing
as there was no action bound to the listbox's Double-Button-1 event
handler. Since I did it without thinking, others will probably also
try, and expect the same behavior.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
If we have specifications listed in our revision picker mega-widget
then we should default the selection within that widget to the first
ref available. This way the user does not need to use the spacebar
to activate the selection of a ref within the box; instead they can
navigate up/down with the arrow keys and be done with it.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This is a major rewrite of the way we perform switching between
branches and the subsequent update of the working directory. Like
core Git we now use a single code path to perform all changes: our
new checkout_op class. We also use it for branch creation/update
as it integrates the tracking branch fetch process along with a
very basic merge (fast-forward and reset only currently).
Because some users have literally hundreds of local branches we
use the standard revision picker (with its branch filtering tool)
to select the local branch, rather than keeping all of the local
branches in the Branch menu. The branch menu listing out all of
the available branches is simply not sane for those types of huge
repositories.
Users can now checkout a detached head by ticking off the option
in the checkout dialog. This option is off by default for the
obvious reason, but it can be easily enabled for any local branch
by simply checking it. We also detach the head if any non local
branch was selected, or if a revision expression was entered.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
I'm really starting to dislike global variables. The ui_status_value
global varible is just one of those that seems to appear in a lot of
code and in many cases we didn't even declare it "global" within the
proc that updates it so we haven't always been getting all of the
updates we expected to see.
This change introduces two new global procs:
ui_status $msg; # Sets the status bar to show $msg.
ui_ready; # Changes the status bar to show "Ready."
The second (special) form is used because we often update the area
with this message once we are done processing a block of work and
want the user to know we have completed it.
I'm not fixing the cases that appear in lib/branch.tcl right now
as I'm actually in the middle of a huge refactoring of that code
to support making a detached HEAD checkout.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
If the user is creating a new local branch and has selected to use
a tracking branch as the starting revision they probably want to
make sure they are using the absolute latest version available of
that branch.
We now offer a checkbox "Fetch Tracking Branch" (on by default)
that instructs git-gui to run git-fetch on just that one branch
before resolving the branch name into a commit SHA-1 and making
(or updating) the local branch.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
In some workflows users will want to almost always just create a new
local branch that matches a remote branch. In this type of workflow
it is handy to have the new branch dialog default to "Match Tracking
Branch" and "Starting Revision"-Tracking Branch", with the focus in
the branch filter field. This can save users working on this type
of workflow at least two mouse clicks every time they create a new
local branch or switch to one with a fast-forward.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
When trying to create a branch from a tag most people are looking
for a recent tag, not one that is ancient history. Rather than
sorting tags by their string we now sort them by taggerdate, as
this places the recent tags at the top of the list and the very
old ones at the end. Tag date works nicely as an approximation
of the actual history order of commits.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
One of my production repositories has hundreds of remote tracking
branches. Trying to navigate these through a popup menu is just
not possible. The list is far larger than the screen and it does
not scroll fast enough to efficiently select a branch name when
trying to create a branch or delete a branch.
This is major rewrite of the revision chooser mega-widget. We
now use a single listbox for all three major types of named refs
(heads, tracking branches, tags) and a radio button group to pick
which of those namespaces should be shown in the listbox. A filter
field is shown to the right allowing the end-user to key in a glob
specification to filter the list they are viewing. The filter is
always taken as substring, so we assume * both starts and ends the
pattern the user wanted but otherwise treat it as a glob pattern.
This new picker works out really nicely. What used to take me at
least a minute to find and select a branch now takes mere seconds.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
If the user elects to create a local branch that has the same name
as an existing branch and we can fast-forward the local branch to
the selected revision we might as well do the fast-forward for the
user, rather than making them first switch to the branch then merge
the selected revision into it. After all, its really just a fast
forward. No history is lost. The resulting branch checkout may
also be faster if the branch we are switching from is closer to
the new revision.
Likewise we also now allow the user to reset the local branch if
it already exists but would not fast-forward. However before we
do the actual reset we tell the user what commits they are going to
lose by showing the oneline subject and abbreviated sha1, and we also
let them inspect the range of commits in gitk.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Some workflows have users create a local branch that matches a remote
branch they have fetched from another repository. If the user wants
to push their changes back to that remote repository then they probably
want to use the same branch name locally so that git-gui's push dialog
can setup the push refspec automatically.
To prevent typos with the local branch name we now offer an option to
use the remote tracking branch name as the new local branch name.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
In the next change I want to let the user create their local branch
name to match the remote branch name, so that the existing push
dialog can push the branch back up to the remote repository without
needing to do any sort of remapping. To do that we need to know
exactly what branch name the remote system is using.
So all_tracking_branches returns a list of specifications, where
each specification is itself a list of:
- local ref name (destination we fetch into)
- remote name (repository we fetch from)
- remote ref name (source ref we fetch from)
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Most people using Git 1.5.x and later are using the newer style
of remotes layout where all of their tracking branches are in
refs/remotes and refs/heads contains only the user's own local
branches.
In such a situation we can avoid calling is_tracking_branch
for each head we are considering because we know that all of
the heads must be local branches if no fetch option or Pull:
line maps a branch into that namespace.
If however any remote maps a remote branch into a local
tracking branch that resides in refs/heads we do exactly
what we did before, which requires scanning through all
fetch lines in case any patterns are matched.
I also switched some regexp/regsub calls to string match
as this can be a faster operation for prefix matching.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
A simple refactoring of the delete branch dialog to allow use of
the class construct to better organize the code and to reuse the
revision selection code of our new choose_rev mega-widget.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This rather large change pulls the "Starting Revision" part of the
new branch dialog into a mega widget that we can use anytime we
need to select a commit SHA-1. To make use of the mega widget I
have also refactored the branch dialog to use the class system,
much like the delete remote branch dialog already does.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Its handy to be able to ask an object to do something for you by
handing it a subcommand. For example if we want to get the value
of an object's private field the object could expose a method that
would return that value. Application level code can then invoke
"$inst get" to perform the method call.
Tk uses this pattern for all of its widgets, so we'd certainly
like to use it for our own mega-widgets that we might develop.
Up until now we haven't needed such functionality, but I'm working
on a new revision picker mega-widget that would benefit from it.
To make this work we have to change the definition of $this to
actually be a procedure within the namespace. By making $this a
procedure any caller that has $this can call subcommands by passing
them as the first argument to $this. That subcommand then needs
to call the proper subroutine.
Placing the dispatch procedure into the object's variable namespace
ensures that it will always be deleted when the object is deleted.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Our blame viewer only grabbed the first initial of the git.git
author string "Simon 'corecode' Schubert". Here the problem was we
looked at Simon, pulled the S into the author initials, then saw
the single quote as the start of the next name and did not like
this character as it was not an uppercase letter.
We now skip over single quoted nicknames placed within the author
name field and grab the initials following it. So the above name
will get the initials SS, rather than just S.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
The blame window shows "who wrote the piece originally" and "who
moved it there" in two columns. In order to identify the former
more correctly, it helps to use the new -w option.
[sp: Minor change to only enable -w if underlying git >= 1.5.3]
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Recently in git.git change b4372ef136 Johannes Schindelin taught
git-commit.sh to invoke (or skip) calling git-rerere based upon
the rerere.enabled configuration setting:
So, check the config variable "rerere.enabled". If it is set
to "false" explicitely, do not activate rerere, even if
.git/rr-cache exists. This should help when you want to disable
rerere temporarily.
If "rerere.enabled" is not set at all, fall back to detection
of the directory .git/rr-cache.
We now do the same logic in git-gui's own commit implementation.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
