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Author SHA1 Message Date
James Bowes
e94a45de42 Add a BuildRequires for gettext in the spec file.
Signed-off-by: James Bowes <jbowes@dangerouslyinc.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11 12:51:55 -08:00
Martin Koegler
9c2174350c pack-objects: only throw away data during memory pressure
If pack-objects hit the memory limit, it deletes objects from the delta
window.

This patch make it only delete the data, which is recomputed, if needed again.

Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11 12:24:33 -08:00
Gerrit Pape
5a95b85566 builtin-commit: remove .git/SQUASH_MSG upon successful commit
After doing a merge --squash, and commit afterwards, the commit message
template SQUASH_MSG in the git directory is not removed, which means that
the content of SQUASH_MSG is used as default commit message for all
subsequent commits.  So have git commit remove the file SQUASH_MSG from
the git directory upon a successful commit.

The problem was discovered by Frédéric Brière, reported through
 http://bugs.debian.org/464656

Signed-off-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11 12:24:27 -08:00
David Steven Tweed
8464010f97 Make git prune remove temporary packs that look like write failures
Write errors when repacking (eg, due to out-of-space conditions)
can leave temporary packs (and possibly other files beginning
with "tmp_") lying around which no existing
codepath removes and which aren't obvious to the casual user.
These can also be multi-megabyte files wasting noticeable space.
Unfortunately there's no way to definitely tell in builtin-prune
that a tmp_ file is not being used by a concurrent process,
such as a fetch. However, it is documented that pruning should
only be done on a quiet repository and --expire is honoured
(using code from Johannes Schindelin, along with a test case
he wrote) so that its safety is the same as that of loose
object pruning.

Since they might be signs of a problem (unlike orphaned loose
objects) the names of any removed files are printed.

Signed-off-by: David Tweed (david.tweed@gmail.com)
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11 12:22:58 -08:00
jaysoffian+git@gmail.com
8e08689959 git-web--browse: fix misplaced quote in init_browser_path()
git "config browser.$1.path" should be git config "browser.$1.path"

Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11 12:22:18 -08:00
Uwe Kleine-K,Av(Bnig
65ae89bc31 rebase -i: accept -m as advertised in the man page
Signed-off-by: Uwe Kleine-K,Av(Bnig <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11 12:18:53 -08:00
Johannes Schindelin
0ed50ceb48 Document that the default of branch.autosetupmerge is true
In 34a3e69 (git-branch: default to --track) the default was changed to
true, to help new git users.  But yours truly forgot to update the
documentation.  This fixes it.

Noticed by Kalle Olavi Niemitalo.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11 12:14:03 -08:00
Johannes Schindelin
ce32660edc bisect: allow starting with a detached HEAD
Instead of insisting on a symbolic ref, bisect now accepts detached
HEADs, too.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11 12:04:17 -08:00
Junio C Hamano
473d33168b git-pull documentation: fix markup
A note paragraph was mistakenly made into an indented monospace display.
Noticed by Miklos Vajna.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-11 11:22:01 -08:00
Frank Lichtenheld
7a31cc0f96 config: Fix --unset for continuation lines
find_beginning_of_line didn't take into account that the
previous line might have ended with \ in which case it shouldn't
stop but continue its search.

Signed-off-by: Frank Lichtenheld <frank@lichtenheld.de>
Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-10 18:42:06 -08:00
Junio C Hamano
94bf9f7c37 Merge branch 'maint'
* maint:
  Fix typo in 'blame' documentation.
2008-02-10 00:54:42 -08:00
Marco Costalba
c3a670de50 Avoid a useless prefix lookup in strbuf_expand()
Currently, the --pretty=format prefix is looked up in a
tight loop in strbuf_expand(), if prefix is found it is then
used as argument for format_commit_item() that does another
search by a switch statement to select the proper operation.

Because the switch statement is already able to discard
unknown matches we don't need the prefix lookup before
to call format_commit_item().

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-09 23:57:08 -08:00
Christian Couder
193ad4f63c web--browse: Add a few quotes in 'init_browser_path'.
These changes were made to the 'init_browser_path' function in
'git-instaweb.sh', but was not in 'git-web--browse.sh'.

[jc: the quoting was screwy and did not quote $1 correctly, so
 I fixed it up.]

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-09 23:46:07 -08:00
Christian Couder
b261ec463a Documentation: instaweb: add 'git-web--browse' information.
Now that 'git-instaweb' uses 'git-web--browse', update the
documentation accordingly.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-09 23:42:37 -08:00
Mike Hommey
9fd9279bf6 Work around curl-gnutls not liking to be reinitialized
curl versions 7.16.3 to 7.18.0 included had a regression in which https
requests following curl_global_cleanup/init sequence would fail with ASN1
parser errors with curl-gnutls. Such sequences happen in some cases such
as git fetch.

We work around this by removing the http_init and http_cleanup calls from
get_refs_via_curl, replacing them with a transport->data initialization
with the http_walker (which does http_init).

While the http_walker is not currently used in get_refs_via_curl, http
and walker code refactor will make it use it.

Signed-off-by: Mike Hommey <mh@glandium.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-09 23:41:42 -08:00
Johannes Schindelin
2b84b5a874 Introduce the config variable pack.packSizeLimit
"git pack-objects" has the option --max-pack-size to limit the file
size of the packs to a certain amount of bytes.  On platforms where
the pack file size is limited by filesystem constraints, it is easy
to forget this option, and this option does not exist for "git gc"
to begin with.

So introduce a config variable to set the default maximum, but make
this overrideable by the command line.

Suggested by Tor Arvid Lund.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-09 23:41:34 -08:00
Bruno Ribas
b59012ef4e gitweb: Use the config file to set repository owner's name.
Now gitweb checks if gitweb.owner exists before trying to get filesystem's
owner.

Allow to use configuration variable gitweb.owner set the repository owner,
it checks the gitweb.owner, if not set it uses filesystem directory's owner.

Useful when we don't want to maintain project list file, and all
repository directories have to have the same owner (for example when the
same SSH account is shared for all projects, using ssh_acl to control
access instead).

Signed-off-by: Bruno Ribas <ribas@c3sl.ufpr.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-09 23:37:03 -08:00
Johannes Schindelin
897d39ced4 Adjust .gitignore for 5884f1(Rename 'git-help--browse.sh'...)
Since git-help--browse was renamed, we should ignore git-web--browse
instead.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-09 23:27:09 -08:00
Dmitry Potapov
a0685a4f45 git-web--browse: do not start the browser with nohup
There is no good reason to run GUI browsers using "nohup". It does not
solve any real problem but creates annoying "nohup.out" files in every
directory where git help -w is run.

Signed-off-by: Dmitry Potapov <dpotapov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-09 23:22:28 -08:00
Daniel Barkalow
c369e7b805 Move code to clean up after a branch change to branch.c
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09 23:16:51 -08:00
Daniel Barkalow
94a5728cfb Library function to check for unmerged index entries
It's small, but it was in three places already, so it should be in the
library.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09 23:16:51 -08:00
Daniel Barkalow
922d87f92f Use diff -u instead of diff in t7201
If the test failed, it was giving really unclear ed script
output. Instead, give a diff that sort of suggests the problem. Also
replaces the use of "git diff" for this purpose with "diff -u".

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09 23:16:51 -08:00
Daniel Barkalow
e496c00348 Move create_branch into a library file
You can also create branches, in exactly the same way, with checkout -b.

This introduces branch.{c,h} library files for doing porcelain-level
operations on branches (such as creating them with their appropriate
default configuration).

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09 23:16:51 -08:00
Daniel Barkalow
e1b3a2cad7 Build-in merge-recursive
This makes write_tree_from_memory(), which writes the active cache as
a tree and returns the struct tree for it, available to other code. It
also makes available merge_trees(), which does the internal merge of
two trees with a known base, and merge_recursive(), which does the
recursive internal merge of two commits with a list of common
ancestors.

The first two of these will be used by checkout -m, and the third is
presumably useful in general, although the implementation of checkout
-m which entirely matches the behavior of the shell version does not
use it (since it ignores the difference of ancestry between the old
branch and the new branch).

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09 23:16:51 -08:00
Daniel Barkalow
4e7c4571b8 Add "skip_unmerged" option to unpack_trees.
This option allows the caller to reset everything that isn't unmerged,
leaving the unmerged things to be resolved. If, after a merge of
"working" and "HEAD", this is used with "HEAD" (reset, !update), the
result will be that all of the changes from "local" are in the working
tree but not added to the index (either with the index clean but
unchanged, or with the index unmerged, depending on whether there are
conflicts).

This will be used in checkout -m.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09 23:16:51 -08:00
Daniel Barkalow
33ecf7eb61 Discard "deleted" cache entries after using them to update the working tree
Way back in read-tree.c, we used a mode 0 cache entry to indicate that
an entry had been deleted, so that the update code would remove the
working tree file, and we would just skip it when writing out the
index file afterward.

These days, unpack_trees is a library function, and it is still
leaving these entries in the active cache. Furthermore, unpack_trees
doesn't correctly ignore those entries, and who knows what other code
wouldn't expect them to be there, but just isn't yet called after a
call to unpack_trees. To avoid having other code trip over these
entries, have check_updates() remove them after it removes the working
tree files.

While we're at it, simplify the loop in check_updates(), and avoid
passing global variables as parameters to check_updates(): there is
only one call site anyway.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09 23:16:51 -08:00
Daniel Barkalow
b05c6dff8a Send unpack-trees debugging output to stderr
This is to keep git-stash from getting confused if you're debugging
unpack-trees.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09 23:16:51 -08:00
Daniel Barkalow
17e4642667 Add flag to make unpack_trees() not print errors.
(This applies only to errors where a plausible operation is impossible due
to the particular data, not to errors resulting from misuse of the merge
functions.)

This will allow builtin-checkout to suppress merge errors if it's
going to try more merging methods.

Additionally, if unpack_trees() returns with an error, but without
printing anything, it will roll back any changes to the index (by
rereading the index, currently). This obviously could be done by the
caller, but chances are that the caller would forget and debugging
this is difficult. Also, future implementations may give unpack_trees() a
more efficient way of undoing its changes than the caller could.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09 23:16:51 -08:00
Daniel Barkalow
203a2fe117 Allow callers of unpack_trees() to handle failure
Return an error from unpack_trees() instead of calling die(), and exit
with an error in read-tree, builtin-commit, and diff-lib. merge-recursive
already expected an error return from unpack_trees, so it doesn't need to
be changed. The merge function can return negative to abort.

This will be used in builtin-checkout -m.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
2008-02-09 23:16:51 -08:00
Tim Stoakes
527270689c Fix typo in 'blame' documentation.
Signed-off-by: Tim Stoakes <tim@stoakes.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-09 20:22:23 -08:00
Johannes Schindelin
fb32c9172a Fix "git clone" for git:// protocol
In ba227857(Reduce the number of connects when fetching), we checked
the return value of git_connect() to see if the connection was
successful.

However, for the git:// protocol, there is no need to have another
process, so the return value was NULL.

Now, it makes sense to assume the rule that git_connect() will return
NULL if it fails (at the moment, it die()s if it fails), so return
a dummy child process.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Acked-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-09 20:12:54 -08:00
Bruno Ribas
201945eeb3 gitweb: Make use of the $git_dir variable at sub git_get_project_url_list
Signed-off-by: Bruno Ribas <ribas@c3sl.ufpr.br>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-08 01:26:27 -08:00
Alexandre Julliard
0520e2154f git.el: Better handling of subprocess errors.
Where possible, capture the output of the git command and display it
if the command fails.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-08 00:13:18 -08:00
Alexandre Julliard
928323af6b git.el: Check for existing buffers on revert.
Refuse to revert a file if it is modified in an existing buffer but
not saved. On success, revert the buffers that contains the files that
have been reverted.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-08 00:13:18 -08:00
Alexandre Julliard
76127b3a0d git.el: Added a command to amend a commit.
It reverts the commit and sets up the status and edit log buffer to
allow making changes and recommitting it. Bound to C-c C-a.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-08 00:13:18 -08:00
Alexandre Julliard
3f3d564aa7 git.el: Support for showing unknown/ignored directories.
Instead of recursing into directories that only contain unknown files,
display only the directory itself. Its contents can be expanded with
git-find-file (bound to C-m).

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-08 00:13:18 -08:00
Toby Allsopp
053d9e432b git-p4: Fix indentation from tab to spaces
Signed-off-by: Toby Allsopp <toby.allsopp@navman.co.nz>
2008-02-07 00:39:08 -08:00
Junio C Hamano
a4cfcb023d Merge branch 'maint'
* maint:
  gitattributes: fix relative path matching
2008-02-07 00:22:29 -08:00
Junio C Hamano
cf94ccda35 gitattributes: fix relative path matching
There was an embarrassing pair of off-by-one miscounting that
failed to match path "a/b/c" when "a/.gitattributes" tried to
name it with relative path "b/c".

This fixes it.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-07 00:04:50 -08:00
Christian Couder
09bc098c2d config: add test cases for empty value and no value config variables.
The tests in 't1300-repo-config.sh' did not check what happens when
an empty value like the following is used in the config file:

[emptyvalue]
	variable =

Also it was not checked that a variable with no value like the
following:

[novalue]
	variable

gives a boolean "true" value, while an ampty value gives a boolean
"false" value.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-06 22:48:07 -08:00
Robin Rosenberg
e75201963f Improve bash prompt to detect various states like an unfinished merge
This patch makes the git prompt (when enabled) show if a merge or a
rebase is unfinished. It also detects if a bisect is being done as
well as detached checkouts.

An uncompleted git-am cannot be distinguised from a rebase (the
non-interactive version). Instead of having an even longer prompt
we simply ignore that and hope the power users that use git-am knows
the difference.

Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
2008-02-06 22:47:36 -08:00
Brian Downing
43fe901b71 compat: Add simplified merge sort implementation from glibc
qsort in Windows 2000 (and various other C libraries) is a Quicksort
with the usual O(n^2) worst case.  Unfortunately, sorting Git trees
seems to get very close to that worst case quite often:

    $ /git/gitbad runstatus
    # On branch master
    qsort, nmemb = 30842
    done, 237838087 comparisons.

This patch adds a simplified version of the merge sort that is glibc's
qsort(3).  As a merge sort, this needs a temporary array equal in size
to the array that is to be sorted, but has a worst-case performance of
O(n log n).

The complexity that was removed is:

* Doing direct stores for word-size and -aligned data.
* Falling back to quicksort if the allocation required to perform the
  merge sort would likely push the machine into swap.

Even with these simplifications, this seems to outperform the Windows
qsort(3) implementation, even in Windows XP (where it is "fixed" and
doesn't trigger O(n^2) complexity on trees).

[jes: moved into compat/qsort.c, as per Johannes Sixt's suggestion]
[bcd: removed gcc-ism, thanks to Edgar Toernig.  renamed make variable
      per Junio's comment.]

Signed-off-by: Brian Downing <bdowning@lavos.net>
Signed-off-by: Steffen Prohaska <prohaska@zib.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-06 22:35:28 -08:00
Jeff King
8bfa6bd647 fix config reading in tests
Previously, we set the GIT_CONFIG environment variable in
our tests so that only that file was read. However, setting
it to a static value is not correct, since we are not
necessarily always in the same directory; instead, we want
the usual git config file lookup to happen.

To do this, we stop setting GIT_CONFIG, which means that we
must now suppress the reading of the system-wide and user
configs.

This exposes an incorrect test in t1500, which is also
fixed (the incorrect test worked because we were failing to
read the core.bare value from the config file, since the
GIT_CONFIG variable was pointing us to the wrong file).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-06 14:52:28 -08:00
Jeff King
ab88c36321 allow suppressing of global and system config
The GIT_CONFIG_NOGLOBAL and GIT_CONFIG_NOSYSTEM environment
variables are magic undocumented switches that can be used
to ensure a totally clean environment. This is necessary for
running reliable tests, since those config files may contain
settings that change the outcome of tests.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-06 14:52:23 -08:00
Junio C Hamano
b828fef678 Merge branch 'maint'
* maint:
  Fix parsing numeric color values
  INSTALL: git-merge no longer uses cpio
2008-02-06 14:20:15 -08:00
Timo Hirvonen
a0cf49c16a Fix parsing numeric color values
Numeric color only worked if it was at end of line.
Noticed by Chris Larson <clarson@kergoth.com>.

Signed-off-by: Timo Hirvonen <tihirvon@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-06 14:02:41 -08:00
Florian La Roche
e62a641de1 gitweb: Make feed entries point to commitdiff view
Change feeds entries (feeds items) from pointing (linking) to 'commit'
view to pointing to 'commitdiff' view.

First, feed entries have whatchanged-like list of files which were
modified in a commit, so 'commitdiff' view more naturally reflects
feed entry (is more naturally alternate / extended version of a feed
item). Second, this way the patches are shown directly and code review
is done more easily via watching feeds.

[jn: Rewritten commit message]

Signed-off-by: Florian La Roche <laroche@redhat.com>
Signed-off-by: Jakub Narebski <jnareb@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-06 13:50:25 -08:00
Eric Wong
c586879cdf git-svn: improve repository URL matching when following parents
This way we can avoid the spawning of a new SVN::Ra session by
reusing the existing one.

The most problematic issue is that some svn servers disallow
too many connections from a single IP, so this will allow
git-svn to fetch from those repositories with a higher success
rate by using fewer connections.

This sometimes showed up as a new (and redundant)
[svn-remote "$parent_refname"] entry in $GIT_DIR/svn/.metadata.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-06 13:50:21 -08:00
Rafael Garcia-Suarez
7deaec9ac7 Make git-remote.perl "use strict" compliant
I was looking at some of the perl commands, and noticed that
git-remote was the only one to lack a 'use strict' pragma at the top,
which could be a good thing for its maintainability. Hopefully, the
required changes are minimal.

Signed-off-by: Rafael Garcia-Suarez <rgarciasuarez@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-06 13:50:21 -08:00
Steffen Prohaska
21e5ad50fc safecrlf: Add mechanism to warn about irreversible crlf conversions
CRLF conversion bears a slight chance of corrupting data.
autocrlf=true will convert CRLF to LF during commit and LF to
CRLF during checkout.  A file that contains a mixture of LF and
CRLF before the commit cannot be recreated by git.  For text
files this is the right thing to do: it corrects line endings
such that we have only LF line endings in the repository.
But for binary files that are accidentally classified as text the
conversion can corrupt data.

If you recognize such corruption early you can easily fix it by
setting the conversion type explicitly in .gitattributes.  Right
after committing you still have the original file in your work
tree and this file is not yet corrupted.  You can explicitly tell
git that this file is binary and git will handle the file
appropriately.

Unfortunately, the desired effect of cleaning up text files with
mixed line endings and the undesired effect of corrupting binary
files cannot be distinguished.  In both cases CRLFs are removed
in an irreversible way.  For text files this is the right thing
to do because CRLFs are line endings, while for binary files
converting CRLFs corrupts data.

This patch adds a mechanism that can either warn the user about
an irreversible conversion or can even refuse to convert.  The
mechanism is controlled by the variable core.safecrlf, with the
following values:

 - false: disable safecrlf mechanism
 - warn: warn about irreversible conversions
 - true: refuse irreversible conversions

The default is to warn.  Users are only affected by this default
if core.autocrlf is set.  But the current default of git is to
leave core.autocrlf unset, so users will not see warnings unless
they deliberately chose to activate the autocrlf mechanism.

The safecrlf mechanism's details depend on the git command.  The
general principles when safecrlf is active (not false) are:

 - we warn/error out if files in the work tree can modified in an
   irreversible way without giving the user a chance to backup the
   original file.

 - for read-only operations that do not modify files in the work tree
   we do not not print annoying warnings.

There are exceptions.  Even though...

 - "git add" itself does not touch the files in the work tree, the
   next checkout would, so the safety triggers;

 - "git apply" to update a text file with a patch does touch the files
   in the work tree, but the operation is about text files and CRLF
   conversion is about fixing the line ending inconsistencies, so the
   safety does not trigger;

 - "git diff" itself does not touch the files in the work tree, it is
   often run to inspect the changes you intend to next "git add".  To
   catch potential problems early, safety triggers.

The concept of a safety check was originally proposed in a similar
way by Linus Torvalds.  Thanks to Dimitry Potapov for insisting
on getting the naked LF/autocrlf=true case right.

Signed-off-by: Steffen Prohaska <prohaska@zib.de>
2008-02-06 13:07:28 -08:00