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Junio C Hamano 8e2dc6ac06 commit: give final warning when reattaching HEAD to leave commits behind 
You can detach the HEAD at an arbitrary commit in order to browse the
files in various points in the history or build older versions of the
software, without recording any new commit, and come back to an existing
branch.  When used in this "sightseer" mode, detached HEAD is a perfectly
safe mechanism.  It also is a useful state to experiment with throw-away
commits.

When coming back to an existing branch with "git checkout master",
however, the commits that were created on the detached HEAD will become
unreachable from anywhere but the reflog of the HEAD.  Check if the commit
we are about to leave is connected to some ref, and give a final warning
otherwise to remind the user for safety.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-02-23 17:24:59 -08:00
..
add.c Merge branch 'nd/maint-fix-add-typo-detection' (early part) 2010-12-08 11:25:52 -08:00
annotate.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
apply.c Merge branch 'fc/apply-p2-get-header-name' into maint 2010-12-09 10:36:36 -08:00
archive.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
bisect--helper.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
blame.c Merge branch 'jn/parse-options-extra' 2010-12-12 21:49:53 -08:00
branch.c builtin/branch.c: Use ALLOC_GROW instead of alloc_nr and xrealloc. 2010-12-19 10:43:53 -08:00
bundle.c Use angles for placeholders consistently 2010-10-08 12:29:52 -07:00
cat-file.c blame,cat-file --textconv: Don't assume mode is ``S_IFREF | 0664'' 2010-09-29 16:53:25 -07:00
check-attr.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
check-ref-format.c Allow "check-ref-format --branch" from subdirectory 2010-08-06 10:01:45 -07:00
checkout-index.c Merge branch 'jn/git-cmd-h-bypass-setup' 2010-12-12 21:49:50 -08:00
checkout.c commit: give final warning when reattaching HEAD to leave commits behind 2011-02-23 17:24:59 -08:00
clean.c Merge branch 'rs/opt-help-text' 2010-11-24 15:55:19 -08:00
clone.c clone: Add the --recurse-submodules option as alias for --recursive 2010-11-05 10:28:01 -07:00
commit-tree.c Sync with 1.7.3.2 2010-10-21 17:16:10 -07:00
commit.c Merge branch 'maint' 2011-01-12 21:26:51 -08:00
config.c Merge branch 'jn/paginate-fix' 2010-08-31 16:23:31 -07:00
count-objects.c add description parameter to OPT__VERBOSE 2010-11-15 09:56:51 -08:00
describe.c Merge branch 'tf/commit-list-prefix' 2010-12-22 14:40:17 -08:00
diff-files.c Submodules: Use "ignore" settings from .gitmodules too for diff and status 2010-08-09 09:11:44 -07:00
diff-index.c Submodules: Use "ignore" settings from .gitmodules too for diff and status 2010-08-09 09:11:44 -07:00
diff-tree.c Submodules: Use "ignore" settings from .gitmodules too for diff and status 2010-08-09 09:11:44 -07:00
diff.c diff,difftool: Don't use the {0,2} notation in usage strings 2010-11-05 10:05:31 -07:00
fast-export.c Merge branch 'en/d-f-conflict-fix' 2010-09-08 08:54:01 -07:00
fetch-pack.c commit: Add commit_list prefix in two function names. 2010-11-29 14:01:52 -08:00
fetch.c Merge branch 'jl/fetch-submodule-recursive' 2010-12-16 12:57:15 -08:00
fmt-merge-msg.c Change incorrect "remote branch" to "remote tracking branch" in C code 2010-11-03 09:20:47 -07:00
for-each-ref.c for-each-ref: fix objectname:short bug 2010-08-26 16:42:25 -07:00
fsck.c add description parameter to OPT__VERBOSE 2010-11-15 09:56:51 -08:00
gc.c Merge branch 'jn/git-cmd-h-bypass-setup' 2010-12-12 21:49:50 -08:00
grep.c thread-utils.h: simplify the inclusion 2010-12-10 12:58:06 -08:00
hash-object.c Merge branch 'lt/deepen-builtin-source' 2010-03-10 15:25:18 -08:00
help.c Cast execl*() NULL sentinels to (char *) 2010-07-25 23:14:18 -07:00
index-pack.c Use parentheses and `...' where appropriate 2010-10-08 12:31:07 -07:00
init-db.c Remove all logic from get_git_work_tree() 2010-12-22 14:34:24 -08:00
log.c Merge branch 'tc/format-patch-p' 2010-12-12 21:49:52 -08:00
ls-files.c Merge branch 'jn/git-cmd-h-bypass-setup' 2010-12-12 21:49:50 -08:00
ls-remote.c ls-remote: run setup_git_directory_gently() sooner 2010-08-15 20:00:02 -07:00
ls-tree.c Use angles for placeholders consistently 2010-10-08 12:29:52 -07:00
mailinfo.c commit: helper methods to reduce redundant blocks of code 2010-11-04 13:53:34 -07:00
mailsplit.c Use parentheses and `...' where appropriate 2010-10-08 12:31:07 -07:00
merge-base.c merge-base --independent to print reduced parent list in a merge 2010-08-18 14:02:03 -07:00
merge-file.c Merge branch 'rs/opt-help-text' 2010-11-24 15:55:19 -08:00
merge-index.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
merge-ours.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
merge-recursive.c Merge branch 'jf/merge-ignore-ws' 2010-10-26 21:40:54 -07:00
merge-tree.c merge-tree: fix where two branches share no changes 2010-07-14 12:56:49 -07:00
merge.c Merge branch 'jn/git-cmd-h-bypass-setup' 2010-12-12 21:49:50 -08:00
mktag.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
mktree.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
mv.c add OPT__FORCE 2010-11-15 10:04:43 -08:00
name-rev.c object.h: Add OBJECT_ARRAY_INIT macro and make use of it. 2010-08-29 22:42:49 -07:00
notes.c Merge branch 'jh/notes-merge' 2010-12-08 11:24:12 -08:00
pack-objects.c thread-utils.h: simplify the inclusion 2010-12-10 12:58:06 -08:00
pack-redundant.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
pack-refs.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
patch-id.c patch-id: Add support for mbox format 2010-04-19 13:01:49 -07:00
prune-packed.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
prune.c add description parameter to OPT__DRY_RUN 2010-11-15 09:57:37 -08:00
push.c Merge branch 'maint' 2010-08-12 18:07:09 -07:00
read-tree.c add description parameter to OPT__VERBOSE 2010-11-15 09:56:51 -08:00
receive-pack.c Merge branch 'tr/receive-pack-aliased-update-fix' into maint 2010-07-07 10:25:15 -07:00
reflog.c Merge branch 'jc/maint-no-reflog-expire-unreach-for-head' 2010-05-21 04:02:18 -07:00
remote-ext.c remote-ext: do not segfault for blank lines 2011-01-18 10:18:25 -08:00
remote-fd.c remote-fd/ext: finishing touches after code review 2010-11-19 11:04:20 -08:00
remote.c Merge branch 'rs/opt-help-text' 2010-11-24 15:55:19 -08:00
replace.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
rerere.c Merge branch 'jn/merge-renormalize' 2010-09-03 09:43:41 -07:00
reset.c Describe various forms of "be quiet" using OPT__QUIET 2010-11-15 10:04:56 -08:00
rev-list.c Merge branch 'jk/maint-rev-list-nul' into maint 2010-11-24 12:46:32 -08:00
rev-parse.c Merge branch 'maint' 2010-07-07 11:18:26 -07:00
revert.c Merge branch 'jn/cherry-pick-refresh-index' into maint 2010-12-09 10:36:51 -08:00
rm.c builtin/rm.c: Use ALLOC_GROW instead of alloc_nr and xrealloc. 2010-12-19 10:44:06 -08:00
send-pack.c Merge branch 'jk/push-progress' 2010-11-17 15:01:00 -08:00
shortlog.c parse-options: Don't call parse_options_check() so much 2010-12-06 16:51:36 -08:00
show-branch.c commit: Add commit_list prefix in two function names. 2010-11-29 14:01:52 -08:00
show-ref.c Describe various forms of "be quiet" using OPT__QUIET 2010-11-15 10:04:56 -08:00
stripspace.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
symbolic-ref.c Describe various forms of "be quiet" using OPT__QUIET 2010-11-15 10:04:56 -08:00
tag.c Merge branch 'mg/maint-tag-rfc1991' 2010-12-08 11:24:13 -08:00
tar-tree.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
unpack-file.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
unpack-objects.c do not depend on signed integer overflow 2010-10-06 11:10:07 -07:00
update-index.c Merge branch 'jn/parse-options-extra' 2010-12-12 21:49:53 -08:00
update-ref.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
update-server-info.c add OPT__FORCE 2010-11-15 10:04:43 -08:00
upload-archive.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
var.c var: run setup_git_directory_gently() sooner 2010-08-15 20:00:02 -07:00
verify-pack.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00
verify-tag.c Merge branch 'mg/maint-tag-rfc1991' 2010-12-08 11:24:13 -08:00
write-tree.c Move 'builtin-*' into a 'builtin/' subdirectory 2010-02-22 14:29:41 -08:00