summaryrefslogtreecommitdiff
path: root/builtin
AgeCommit message (Collapse)AuthorFilesLines
2018-11-02Merge branch 'js/rebase-autostash-fix'Libravatar Junio C Hamano1-3/+5
"git rebase" that has recently been rewritten in C had a few issues in its "--autstash" feature, which have been corrected. * js/rebase-autostash-fix: rebase --autostash: fix issue with dirty submodules rebase --autostash: demonstrate a problem with dirty submodules rebase (autostash): use an explicit OID to apply the stash rebase (autostash): store the full OID in <state-dir>/autostash rebase (autostash): avoid duplicate call to state_dir_path()
2018-11-02Merge branch 'jc/rebase-in-c-5-test-typofix'Libravatar Junio C Hamano1-3/+3
Typofix. * jc/rebase-in-c-5-test-typofix: rebase: fix typoes in error messages
2018-11-02Merge branch 'pk/rebase-in-c-6-final'Libravatar Junio C Hamano1-1/+1
The final step of rewriting "rebase -i" in C. * pk/rebase-in-c-6-final: rebase: default to using the builtin rebase
2018-11-02Merge branch 'js/rebase-in-c-5.5-work-with-rebase-i-in-c'Libravatar Junio C Hamano1-4/+83
"rebase" that has been rewritten learns the new calling convention used by "rebase -i" that was rewritten in C, tying the loose end between two GSoC topics that stomped on each other's toes. * js/rebase-in-c-5.5-work-with-rebase-i-in-c: builtin rebase: prepare for builtin rebase -i
2018-11-02Merge branch 'pk/rebase-in-c-5-test'Libravatar Junio C Hamano1-15/+135
Rewrite "git rebase" in C. * pk/rebase-in-c-5-test: builtin rebase: error out on incompatible option/mode combinations builtin rebase: use no-op editor when interactive is "implied" builtin rebase: show progress when connected to a terminal builtin rebase: fast-forward to onto if it is a proper descendant builtin rebase: optionally pass custom reflogs to reset_head() builtin rebase: optionally auto-detect the upstream
2018-11-02Merge branch 'pk/rebase-in-c-4-opts'Libravatar Junio C Hamano2-85/+446
Rewrite "git rebase" in C. * pk/rebase-in-c-4-opts: builtin rebase: support --root builtin rebase: add support for custom merge strategies builtin rebase: support `fork-point` option merge-base --fork-point: extract libified function builtin rebase: support --rebase-merges[=[no-]rebase-cousins] builtin rebase: support `--allow-empty-message` option builtin rebase: support `--exec` builtin rebase: support `--autostash` option builtin rebase: support `-C` and `--whitespace=<type>` builtin rebase: support `--gpg-sign` option builtin rebase: support `--autosquash` builtin rebase: support `keep-empty` option builtin rebase: support `ignore-date` option builtin rebase: support `ignore-whitespace` option builtin rebase: support --committer-date-is-author-date builtin rebase: support --rerere-autoupdate builtin rebase: support --signoff builtin rebase: allow selecting the rebase "backend"
2018-11-02Merge branch 'pk/rebase-in-c-3-acts'Libravatar Junio C Hamano1-4/+189
Rewrite "git rebase" in C. * pk/rebase-in-c-3-acts: builtin rebase: stop if `git am` is in progress builtin rebase: actions require a rebase in progress builtin rebase: support --edit-todo and --show-current-patch builtin rebase: support --quit builtin rebase: support --abort builtin rebase: support --skip builtin rebase: support --continue
2018-11-02Merge branch 'pk/rebase-in-c-2-basic'Libravatar Junio C Hamano1-13/+321
Rewrite "git rebase" in C. * pk/rebase-in-c-2-basic: builtin rebase: support `git rebase <upstream> <switch-to>` builtin rebase: only store fully-qualified refs in `options.head_name` builtin rebase: start a new rebase only if none is in progress builtin rebase: support --force-rebase builtin rebase: try to fast forward when possible builtin rebase: require a clean worktree builtin rebase: support the `verbose` and `diffstat` options builtin rebase: support --quiet builtin rebase: handle the pre-rebase hook and --no-verify builtin rebase: support `git rebase --onto A...B` builtin rebase: support --onto
2018-11-02Merge branch 'ag/rebase-i-in-c'Libravatar Junio C Hamano2-88/+271
Rewrite of the remaining "rebase -i" machinery in C. * ag/rebase-i-in-c: rebase -i: move rebase--helper modes to rebase--interactive rebase -i: remove git-rebase--interactive.sh rebase--interactive2: rewrite the submodes of interactive rebase in C rebase -i: implement the main part of interactive rebase as a builtin rebase -i: rewrite init_basic_state() in C rebase -i: rewrite write_basic_state() in C rebase -i: rewrite the rest of init_revisions_and_shortrevisions() in C rebase -i: implement the logic to initialize $revisions in C rebase -i: remove unused modes and functions rebase -i: rewrite complete_action() in C t3404: todo list with commented-out commands only aborts sequencer: change the way skip_unnecessary_picks() returns its result sequencer: refactor append_todo_help() to write its message to a buffer rebase -i: rewrite checkout_onto() in C rebase -i: rewrite setup_reflog_action() in C sequencer: add a new function to silence a command, except if it fails rebase -i: rewrite the edit-todo functionality in C editor: add a function to launch the sequence editor rebase -i: rewrite append_todo_help() in C sequencer: make three functions and an enum from sequencer.c public
2018-11-02Merge branch 'pk/rebase-in-c'Libravatar Junio C Hamano1-0/+421
Rewrite of the "rebase" machinery in C. * pk/rebase-in-c: builtin/rebase: support running "git rebase <upstream>" rebase: refactor common shell functions into their own file rebase: start implementing it as a builtin
2018-10-30Merge branch 'jc/receive-deny-current-branch-fix'Libravatar Junio C Hamano1-3/+9
The receive.denyCurrentBranch=updateInstead codepath kicked in even when the push should have been rejected due to other reasons, such as it does not fast-forward or the update-hook rejects it, which has been corrected. * jc/receive-deny-current-branch-fix: receive: denyCurrentBranch=updateinstead should not blindly update
2018-10-30Merge branch 'ot/ref-filter-plug-leaks'Libravatar Junio C Hamano1-1/+1
Plugging a handful of memory leaks in the ref-filter codepath. * ot/ref-filter-plug-leaks: ref-filter: free item->value and item->value->s ls-remote: release memory instead of UNLEAK ref-filter: free memory from used_atom
2018-10-30Merge branch 'sb/submodule-helper-remove-cruft'Libravatar Junio C Hamano1-2/+0
Code clean-up. * sb/submodule-helper-remove-cruft: builtin/submodule--helper: remove debugging leftover tracing
2018-10-30Merge branch 'js/pack-objects-mutex-init-fix'Libravatar Junio C Hamano1-1/+0
A mutex used in "git pack-objects" were not correctly initialized and this caused "git repack" to dump core on Windows. * js/pack-objects-mutex-init-fix: pack-objects (mingw): initialize `packing_data` mutex in the correct spot pack-objects (mingw): demonstrate a segmentation fault with large deltas pack-objects: fix typo 'detla' -> 'delta'
2018-10-30Merge branch 'tq/branch-style-fix'Libravatar Junio C Hamano1-2/+1
Code clean-up. * tq/branch-style-fix: branch: trivial style fix
2018-10-30Merge branch 'tq/branch-create-wo-branch-get'Libravatar Junio C Hamano1-5/+0
Code clean-up. * tq/branch-create-wo-branch-get: builtin/branch.c: remove useless branch_get
2018-10-30Merge branch 'bc/hash-transition-part-15'Libravatar Junio C Hamano3-13/+15
More codepaths are moving away from hardcoded hash sizes. * bc/hash-transition-part-15: rerere: convert to use the_hash_algo submodule: make zero-oid comparison hash function agnostic apply: rename new_sha1_prefix and old_sha1_prefix apply: replace hard-coded constants tag: express constant in terms of the_hash_algo transport: use parse_oid_hex instead of a constant upload-pack: express constants in terms of the_hash_algo refs/packed-backend: express constants using the_hash_algo packfile: express constants in terms of the_hash_algo pack-revindex: express constants in terms of the_hash_algo builtin/fetch-pack: remove constants with parse_oid_hex builtin/mktree: remove hard-coded constant builtin/repack: replace hard-coded constants pack-bitmap-write: use GIT_MAX_RAWSZ for allocation object_id.cocci: match only expressions of type 'struct object_id'
2018-10-30Merge branch 'md/filter-trees'Libravatar Junio C Hamano1-4/+7
The "rev-list --filter" feature learned to exclude all trees via "tree:0" filter. * md/filter-trees: list-objects: support for skipping tree traversal filter-trees: code clean-up of tests list-objects-filter: implement filter tree:0 list-objects-filter-options: do not over-strbuf_init list-objects-filter: use BUG rather than die revision: mark non-user-given objects instead rev-list: handle missing tree objects properly list-objects: always parse trees gently list-objects: refactor to process_tree_contents list-objects: store common func args in struct
2018-10-26Merge branch 'rv/alias-help'Libravatar Junio C Hamano1-3/+31
"git cmd --help" when "cmd" is aliased used to only say "cmd is aliased to ...". Now it shows that to the standard error stream and runs "git $cmd --help" where $cmd is the first word of the alias expansion. This could be misleading for those who alias a command with options (e.g. with "[alias] cpn = cherry-pick -n", "git cpn --help" would show the manual of "cherry-pick", and the reader would not be told to pay close attention to the part that describes the "--no-commit" option until closing the pager that showed the contents of the manual, if the pager is configured to restore the original screen, or would not be told at all, if the pager simply makes the message on the standard error scroll away. * rv/alias-help: git-help.txt: document "git help cmd" vs "git cmd --help" for aliases git.c: handle_alias: prepend alias info when first argument is -h help: redirect to aliased commands for "git cmd --help"
2018-10-24rebase --autostash: fix issue with dirty submodulesLibravatar Johannes Schindelin1-1/+1
Since we cannot stash dirty submodules, there is no use in requiring them to be clean (or stash them when they are not). This brings the built-in rebase in line with the previous, scripted version, which also did not care about dirty submodules (but it was admittedly not very easy to figure that out). This fixes https://github.com/git-for-windows/git/issues/1820 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-23rebase (autostash): use an explicit OID to apply the stashLibravatar Johannes Schindelin1-0/+2
When `git stash apply <argument>` sees an argument that consists only of digits, it tries to be smart and interpret it as `stash@{<number>}`. Unfortunately, an all-digit hash (which is unlikely but still possible) is therefore misinterpreted as `stash@{<n>}` reflog. To prevent that from happening, let's append `^0` after the stash hash, to make sure that it is interpreted as an OID rather than as a number. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Reviewed-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-23rebase (autostash): store the full OID in <state-dir>/autostashLibravatar Johannes Schindelin1-1/+1
It was reported by Gábor Szeder and analyzed by Alban Gruin that the built-in rebase stores only abbreviated stash hashes in the `autostash` file. This is problematic e.g. in t5520-pull.sh, where the abbreviated hash is so short that it sometimes consists only of digits, which are subsequently mistaken ("DWIMmed") for numbers by `git stash apply`. Let's align the behavior of the built-in rebase with the scripted rebase and store the full stash hash instead. That makes it a lot less likely that it consists only of digits. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Reviewed-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-23rebase (autostash): avoid duplicate call to state_dir_path()Libravatar Johannes Schindelin1-1/+1
We already called that function at this point, and stored the result in the `path` variable. We might just as well use it ;-) Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Reviewed-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-19receive: denyCurrentBranch=updateinstead should not blindly updateLibravatar Junio C Hamano1-3/+9
The handling of receive.denyCurrentBranch=updateInstead was added to a switch statement that handles other values of the variable, but all the other case arms only checked a condition to reject the attempted push, or let later logic in the same function to still intervene, so that a push that does not fast-forward (which is checked after the switch statement in question) is still rejected. But the handling of updateInstead incorrectly took immediate effect, without giving other checks a chance to intervene. Instead of calling update_worktree() that causes the side effect immediately, just note the fact that we will need to call the function later, and first give other checks a chance to reject the request. After the update-hook gets a chance to reject the push (which happens as the last step in a series of checks), call update_worktree() when we earlier detected the need to. Reported-by: Rajesh Madamanchi Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-19pack-objects (mingw): initialize `packing_data` mutex in the correct spotLibravatar Johannes Schindelin1-1/+0
In 9ac3f0e5b3e4 (pack-objects: fix performance issues on packing large deltas, 2018-07-22), a mutex was introduced that is used to guard the call to set the delta size. This commit even added code to initialize it, but at an incorrect spot: in `init_threaded_search()`, while the call to `oe_set_delta_size()` (and hence to `packing_data_lock()`) can happen in the call chain `check_object()` <- `get_object_details()` <- `prepare_pack()` <- `cmd_pack_objects()`, which is long before the `prepare_pack()` function calls `ll_find_deltas()` (which initializes the threaded search). Another tell-tale that the mutex was initialized in an incorrect spot is that the function to initialize it lives in builtin/, while the code that uses the mutex is defined in a libgit.a header file. Let's use a more appropriate function: `prepare_packing_data()`, which not only lives in libgit.a, but *has* to be called before the `packing_data` struct is used that contains that mutex. This fixes https://github.com/git-for-windows/git/issues/1839. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-19Merge branch 'tb/filter-alternate-refs'Libravatar Junio C Hamano1-2/+1
When pushing into a repository that borrows its objects from an alternate object store, "git receive-pack" that responds to the push request on the other side lists the tips of refs in the alternate to reduce the amount of objects transferred. This sometimes is detrimental when the number of refs in the alternate is absurdly large, in which case the bandwidth saved in potentially fewer objects transferred is wasted in excessively large ref advertisement. The alternate refs that are advertised are now configurable with a pair of configuration variables. * tb/filter-alternate-refs: transport.c: introduce core.alternateRefsPrefixes transport.c: introduce core.alternateRefsCommand transport.c: extract 'fill_alternate_refs_command' transport: drop refnames from for_each_alternate_ref
2018-10-19Merge branch 'jt/avoid-ls-refs'Libravatar Junio C Hamano1-6/+26
Over some transports, fetching objects with an exact commit object name can be done without first seeing the ref advertisements. The code has been optimized to exploit this. * jt/avoid-ls-refs: fetch: do not list refs if fetching only hashes transport: list refs before fetch if necessary transport: do not list refs if possible transport: allow skipping of ref listing
2018-10-19Merge branch 'ds/commit-graph-leakfix'Libravatar Junio C Hamano1-5/+6
Code clean-up. * ds/commit-graph-leakfix: commit-graph: reduce initial oid allocation builtin/commit-graph.c: UNLEAK variables commit-graph: clean up leaked memory during write
2018-10-19Merge branch 'rs/grep-no-recursive'Libravatar Junio C Hamano1-0/+2
Unlike "grep", "git grep" by default recurses to the whole tree. The command learned "git grep --recursive" option, so that "git grep --no-recursive" can serve as a synonym to setting the max-depth to 0. * rs/grep-no-recursive: grep: add -r/--[no-]recursive
2018-10-19Merge branch 'nd/help-commands-verbose-by-default'Libravatar Junio C Hamano1-1/+1
"git help -a" and "git help -av" give different pieces of information, and generally the "verbose" version is more friendly to the new users. "git help -a" by default now uses the more verbose output (with "--no-verbose", you can go back to the original). Also "git help -av" now lists aliases and external commands, which it did not used to. * nd/help-commands-verbose-by-default: help -a: improve and make --verbose default
2018-10-19Merge branch 'jt/fetch-tips-in-partial-clone'Libravatar Junio C Hamano1-2/+13
"git fetch $repo $object" in a partial clone did not correctly fetch the asked-for object that is referenced by an object in promisor packfile, which has been fixed. * jt/fetch-tips-in-partial-clone: fetch: in partial clone, check presence of targets connected: document connectivity in partial clones
2018-10-19Merge branch 'nd/status-refresh-progress'Libravatar Junio C Hamano2-3/+9
"git status" learns to show progress bar when refreshing the index takes a long time. * nd/status-refresh-progress: status: show progress bar if refreshing the index takes too long
2018-10-19Merge branch 'ss/wt-status-committable'Libravatar Junio C Hamano1-9/+12
Code clean-up in the internal machinery used by "git status" and "git commit --dry-run". * ss/wt-status-committable: roll wt_status_state into wt_status and populate in the collect phase wt-status.c: set the committable flag in the collect phase t7501: add test of "commit --dry-run --short" wt-status: rename commitable to committable wt-status.c: move has_unmerged earlier in the file
2018-10-19Merge branch 'nd/the-index'Libravatar Junio C Hamano32-66/+77
Various codepaths in the core-ish part learn to work on an arbitrary in-core index structure, not necessarily the default instance "the_index". * nd/the-index: (23 commits) revision.c: reduce implicit dependency the_repository revision.c: remove implicit dependency on the_index ws.c: remove implicit dependency on the_index tree-diff.c: remove implicit dependency on the_index submodule.c: remove implicit dependency on the_index line-range.c: remove implicit dependency on the_index userdiff.c: remove implicit dependency on the_index rerere.c: remove implicit dependency on the_index sha1-file.c: remove implicit dependency on the_index patch-ids.c: remove implicit dependency on the_index merge.c: remove implicit dependency on the_index merge-blobs.c: remove implicit dependency on the_index ll-merge.c: remove implicit dependency on the_index diff-lib.c: remove implicit dependency on the_index read-cache.c: remove implicit dependency on the_index diff.c: remove implicit dependency on the_index grep.c: remove implicit dependency on the_index diff.c: remove the_index dependency in textconv() functions blame.c: rename "repo" argument to "r" combine-diff.c: remove implicit dependency on the_index ...
2018-10-19ls-remote: release memory instead of UNLEAKLibravatar Olga Telezhnaya1-1/+1
Use ref_array_clear() to release memory instead of UNLEAK macros. Signed-off-by: Olga Telezhnaia <olyatelezhnaya@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-18builtin/submodule--helper: remove debugging leftover tracingLibravatar Stefan Beller1-2/+0
I noticed 74d4731da1 (submodule--helper: replace connect-gitdir-workingtree by ensure-core-worktree, 2018-08-13) had two leftover debugging statements when reading The coverage report [1]. Remove them. https://public-inbox.org/git/e30a9c05-87d8-1f2b-182c-6d6a5fefe43c@gmail.com/ Signed-off-by: Stefan Beller <sbeller@google.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-18branch: trivial style fixLibravatar Tao Qingyun1-2/+1
Signed-off-by: Tao Qingyun <taoqy@ls-a.me> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-18builtin/branch.c: remove useless branch_getLibravatar Tao Qingyun1-5/+0
branch_get sometimes returns current_branch, which can be NULL (e.g., if you're on a detached HEAD). Try: $ git branch HEAD fatal: no such branch 'HEAD' $ git branch '' fatal: no such branch '' However, it seems weird that we'd check those cases here (and provide such lousy messages). And indeed, dropping that and letting us eventually hit create_branch() gives a much better message: $ git branch HEAD fatal: 'HEAD' is not a valid branch name. $ git branch '' fatal: '' is not a valid branch name. Signed-off-by: Tao Qingyun <taoqy@ls-a.me> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-16Merge branch 'jk/oideq-hasheq-cleanup'Libravatar Junio C Hamano1-1/+2
Code clean-up. * jk/oideq-hasheq-cleanup: more oideq/hasheq conversions
2018-10-16Merge branch 'en/status-multiple-renames-to-the-same-target-fix'Libravatar Junio C Hamano1-0/+1
The code in "git status" sometimes hit an assertion failure. This was caused by a structure that was reused without cleaning the data used for the first run, which has been corrected. * en/status-multiple-renames-to-the-same-target-fix: commit: fix erroneous BUG, 'multiple renames on the same target? how?'
2018-10-16Merge branch 'jk/check-everything-connected-is-long-gone'Libravatar Junio C Hamano1-1/+1
Comment fix. * jk/check-everything-connected-is-long-gone: receive-pack: update comment with check_everything_connected
2018-10-16Merge branch 'jn/gc-auto'Libravatar Junio C Hamano1-6/+27
"gc --auto" ended up calling exit(-1) upon error, which has been corrected to use exit(1). Also the error reporting behaviour when daemonized has been updated to exit with zero status when stopping due to a previously discovered error (which implies there is no point running gc to improve the situation); we used to exit with failure in such a case. * jn/gc-auto: gc: do not return error for prior errors in daemonized mode
2018-10-16Merge branch 'jn/gc-auto-prep'Libravatar Junio C Hamano1-22/+18
Code clean-up. * jn/gc-auto-prep: gc: exit with status 128 on failure gc: improve handling of errors reading gc.log
2018-10-16Merge branch 'jk/delta-islands-with-bitmap-reuse-delta-fix'Libravatar Junio C Hamano1-16/+52
Fix interactions between two recent topics. * jk/delta-islands-with-bitmap-reuse-delta-fix: pack-objects: handle island check for "external" delta base
2018-10-16Merge branch 'ds/commit-graph-with-grafts'Libravatar Junio C Hamano2-4/+8
The recently introduced commit-graph auxiliary data is incompatible with mechanisms such as replace & grafts that "breaks" immutable nature of the object reference relationship. Disable optimizations based on its use (and updating existing commit-graph) when these incompatible features are in use in the repository. * ds/commit-graph-with-grafts: commit-graph: close_commit_graph before shallow walk commit-graph: not compatible with uninitialized repo commit-graph: not compatible with grafts commit-graph: not compatible with replace objects test-repository: properly init repo commit-graph: update design document refs.c: upgrade for_each_replace_ref to be a each_repo_ref_fn callback refs.c: migrate internal ref iteration to pass thru repository argument
2018-10-16Merge branch 'ab/commit-graph-progress'Libravatar Junio C Hamano3-4/+6
Generation of (experimental) commit-graph files have so far been fairly silent, even though it takes noticeable amount of time in a meaningfully large repository. The users will now see progress output. * ab/commit-graph-progress: gc: fix regression in 7b0f229222 impacting --quiet commit-graph verify: add progress output commit-graph write: add progress output
2018-10-15builtin/fetch-pack: remove constants with parse_oid_hexLibravatar brian m. carlson1-6/+7
Instead of using GIT_SHA1_HEXSZ, use parse_oid_hex to compute a pointer and use that in comparisons. This is both simpler to read and works independent of the hash length. Update references to SHA-1 in the same function to refer to object IDs instead. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-15builtin/mktree: remove hard-coded constantLibravatar brian m. carlson1-1/+1
Instead of using a hard-coded constant for the size of a hex object ID, switch to use the computed pointer from parse_oid_hex that points after the parsed object ID. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-15builtin/repack: replace hard-coded constantsLibravatar brian m. carlson1-6/+7
Note that while the error messages here are not translated, the end user should never see them. We invoke git pack-objects shortly before both invocations, so we can be fairly certain that the data we're receiving is in fact valid. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-10-11rebase: fix typoes in error messagesLibravatar Junio C Hamano1-3/+3
The separator between words in a multi-word option name is a dash, not an underscore. Inspired by a matching change by Ralf Thielow for the scripted version of "git rebase". Signed-off-by: Junio C Hamano <gitster@pobox.com>