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We have some commands that can operate inside or outside a repository.
If we're operating outside a repository, we clearly cannot use the
repository's hash algorithm as a default since it doesn't exist, so
instead, let's pick the default instead of specifically SHA-1. Right
now this results in no functional change since the default is SHA-1, but
that may change in the future.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Adapt callers to use generic hash context helpers instead of using the
hash algorithm to update them. This makes the callsites easier to reason
about and removes the possibility that the wrong hash algorithm is used
to update the hash context's state. And as a nice side effect this also
gets rid of a bunch of users of `the_hash_algo`.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We generally avoid using `typedef` in the Git codebase. One exception
though is the `git_hash_ctx`, likely because it used to be a union
rather than a struct until the preceding commit refactored it. But now
that it is a normal `struct` there isn't really a need for a typedef
anymore.
Drop the typedef and adapt all callers accordingly.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In `get_one_patchid()` we assign either the result of `strlen()` or
`remove_space()` to `len`. But while the former correctly returns a
`size_t`, the latter returns an `int` to indicate the length of the
stripped string even though it cannot ever return a negative value. This
causes a warning with "-Wsign-conversion".
In fact, even `get_one_patchid()` itself is also using an integer as
return value even though it always returns the length of the patch, and
this bubbles up to other callers.
Adapt the function and its helpers to use `size_t` for string lengths
consistently.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Mark code units that generate warnings with `-Wsign-compare`. This
allows for a structured approach to get rid of all such warnings over
time in a way that can be easily measured.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The convention to calling into built-in command implementation has
been updated to pass the repository, if known, together with the
prefix value.
* jc/pass-repo-to-builtins:
add: pass in repo variable instead of global the_repository
builtin: remove USE_THE_REPOSITORY for those without the_repository
builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h
builtin: add a repository parameter for builtin functions
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This reverts commit 41c952ebacf7e3369e7bee721f768114d65e50c4,
reversing changes made to 712d970c0145b95ce655773e7cd1676f09dfd215.
Keeping a known breakage for now is better than introducing new
regression(s).
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Instead of including USE_THE_REPOSITORY_VARIABLE by default on every
builtin, remove it from builtin.h and add it to all the builtins that
include builtin.h (by definition, that means all builtins/*.c).
Also, remove the include statement for repository.h since it gets
brought in through builtin.h.
The next step will be to migrate each builtin
from having to use the_repository.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In order to reduce the usage of the global the_repository, add a
parameter to builtin functions that will get passed a repository
variable.
This commit uses UNUSED on most of the builtin functions, as subsequent
commits will modify the actual builtins to pass the repository parameter
down.
Signed-off-by: John Cai <johncai86@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The patch parser in "git patch-id" has been tightened to avoid
getting confused by lines that look like a patch header in the log
message.
cf. <Zqh2T_2RLt0SeKF7@tanuki>
* jc/patch-id:
patch-id: tighten code to detect the patch header
patch-id: rewrite code that detects the beginning of a patch
patch-id: make get_one_patchid() more extensible
patch-id: call flush_current_id() only when needed
t4204: patch-id supports various input format
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The patch parser in "git patch-id" has been tightened to avoid
getting confused by lines that look like a patch header in the log
message.
* jc/patch-id:
patch-id: tighten code to detect the patch header
patch-id: rewrite code that detects the beginning of a patch
patch-id: make get_one_patchid() more extensible
patch-id: call flush_current_id() only when needed
t4204: patch-id supports various input format
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The get_one_patchid() function unconditionally takes a line that
matches the patch header (namely, a line that begins with a full
object name, possibly prefixed by "commit" or "From" plus a space)
as the beginning of a patch. Even when it is *not* looking for one
(namely, when the previous call found the patch header and returned,
and then we are called again to skip the log message and process the
patch whose header was found by the previous invocation).
As a consequence, a line in the commit log message that begins with
one of these patterns can be mistaken to start another patch, with
current message entirely skipped (because we haven't even reached
the patch at all).
Allow the caller to tell us if it called us already and saw the
patch header (in which case we shouldn't be looking for another one,
until we see the "diff" part of the patch; instead we simply should
be skipping these lines as part of the commit log message), and skip
the header processing logic when that is the case. In the helper
function, it also needs to flip this "are we looking for a header?"
bit, once it finished skipping the commit log message and started
processing the patches, as the patch header of the _next_ message is
the only clue in the input that the current patch is done.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The get_one_patchid() function reads input lines until it finds a
patch header (the line that begins a patch), whose beginning is one
of:
(1) an "<object name>", which is what "git diff-tree --stdin" shows;
(2) "commit <object name>", which is what "git log" shows; or
(3) "From <object name>", which is what "git log --format=email" shows.
When it finds such a line, it returns to the caller, reporting the
<object name> it found, and the size of the "patch" it processed.
The caller then calls the function again, which then ignores the
commit log message, and then processes the lines in the patch part
until it hits another "beginning of a patch".
The above logic was fairly easy to see until 2bb73ae8 (patch-id: use
starts_with() and skip_prefix(), 2016-05-28) reorganized the code,
which made another logic that has nothing to do with the "where does
the next patch begin?" logic, which came from 2485eab5
(git-patch-id: do not trip over "no newline" markers, 2011-02-17)
that ignores the "\ No newline at the end", rolled into the same
single if() statement.
Let's split it out. The "\ No newline at the end" marker is part of
the patch, should not appear before we start reading the patch part,
and does not belong to the detection of patch header.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We pass two independent Boolean flags (i.e. do we want the stable
variant of patch-id? do we want to hash the stuff verbatim?) into
the function as two separate parameters. Before adding the third
one and make the interface even wider, let's consolidate them into
a single flag word.
No changes in behaviour. Just a trivial interface change.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The caller passes a flag that is used to become no-op when calling
flush_current_id(). Instead of calling something that becomes a
no-op, teach the caller not to call it in the first place.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Both `oidread()` and `oidclr()` use `the_repository` to derive the hash
function that shall be used. Require callers to pass in the hash
algorithm to get rid of this implicit dependency.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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In c8aed5e8da (repository: stop setting SHA1 as the default object hash,
2024-05-07), we have adapted `initialize_repository()` to no longer set
up a default hash function. As this function is also used to set up
`the_repository`, the consequence is that `the_hash_algo` will now by
default be a `NULL` pointer unless the hash algorithm was configured
properly. This is done as a mechanism to detect cases where we may be
using the wrong hash function by accident.
This change now causes git-patch-id(1) to segfault when it's run outside
of a repository. As this command can read diffs from stdin, it does not
necessarily need a repository, but then relies on `the_hash_algo` to
compute the patch ID itself.
It is somewhat dubious that git-patch-id(1) relies on `the_hash_algo` in
the first place. Quoting its manpage:
A "patch ID" is nothing but a sum of SHA-1 of the file diffs
associated with a patch, with line numbers ignored. As such, it’s
"reasonably stable", but at the same time also reasonably unique,
i.e., two patches that have the same "patch ID" are almost
guaranteed to be the same thing.
We explicitly document patch IDs to be using SHA-1. Furthermore, patch
IDs are supposed to be stable for most of the part. But even with the
same input, the patch IDs will now be different depending on the repo's
configured object hash.
Work around the issue by setting up SHA-1 when there was no startup
repository for now. This is arguably not the correct fix, but for now we
rather want to focus on getting the segfault fixed.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Reduce reliance on a global state in the config reading API.
* gc/config-context:
config: pass source to config_parser_event_fn_t
config: add kvi.path, use it to evaluate includes
config.c: remove config_reader from configsets
config: pass kvi to die_bad_number()
trace2: plumb config kvi
config.c: pass ctx with CLI config
config: pass ctx with config files
config.c: pass ctx in configsets
config: add ctx arg to config_fn_t
urlmatch.h: use config_fn_t type
config: inline git_color_default_config
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Add a new "const struct config_context *ctx" arg to config_fn_t to hold
additional information about the config iteration operation.
config_context has a "struct key_value_info kvi" member that holds
metadata about the config source being read (e.g. what kind of config
source it is, the filename, etc). In this series, we're only interested
in .kvi, so we could have just used "struct key_value_info" as an arg,
but config_context makes it possible to add/adjust members in the future
without changing the config_fn_t signature. We could also consider other
ways of organizing the args (e.g. moving the config name and value into
config_context or key_value_info), but in my experiments, the
incremental benefit doesn't justify the added complexity (e.g. a
config_fn_t will sometimes invoke another config_fn_t but with a
different config value).
In subsequent commits, the .kvi member will replace the global "struct
config_reader" in config.c, making config iteration a global-free
operation. It requires much more work for the machinery to provide
meaningful values of .kvi, so for now, merely change the signature and
call sites, pass NULL as a placeholder value, and don't rely on the arg
in any meaningful way.
Most of the changes are performed by
contrib/coccinelle/config_fn_ctx.pending.cocci, which, for every
config_fn_t:
- Modifies the signature to accept "const struct config_context *ctx"
- Passes "ctx" to any inner config_fn_t, if needed
- Adds UNUSED attributes to "ctx", if needed
Most config_fn_t instances are easily identified by seeing if they are
called by the various config functions. Most of the remaining ones are
manually named in the .cocci patch. Manual cleanups are still needed,
but the majority of it is trivial; it's either adjusting config_fn_t
that the .cocci patch didn't catch, or adding forward declarations of
"struct config_context ctx" to make the signatures make sense.
The non-trivial changes are in cases where we are invoking a config_fn_t
outside of config machinery, and we now need to decide what value of
"ctx" to pass. These cases are:
- trace2/tr2_cfg.c:tr2_cfg_set_fl()
This is indirectly called by git_config_set() so that the trace2
machinery can notice the new config values and update its settings
using the tr2 config parsing function, i.e. tr2_cfg_cb().
- builtin/checkout.c:checkout_main()
This calls git_xmerge_config() as a shorthand for parsing a CLI arg.
This might be worth refactoring away in the future, since
git_xmerge_config() can call git_default_config(), which can do much
more than just parsing.
Handle them by creating a KVI_INIT macro that initializes "struct
key_value_info" to a reasonable default, and use that to construct the
"ctx" arg.
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This also made it clear that several .c files depended upon various
things that oidset included, but had omitted the direct #include for
those headers. Add those now.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Since this header showed up in some places besides just #include
statements, update/clean-up/remove those other places as well.
Note that compat/fsmonitor/fsm-path-utils-darwin.c previously got
away with violating the rule that all files must start with an include
of git-compat-util.h (or a short-list of alternate headers that happen
to include it first). This change exposed the violation and caused it
to stop building correctly; fix it by having it include
git-compat-util.h first, as per policy.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Dozens of files made use of gettext functions, without explicitly
including gettext.h. This made it more difficult to find which files
could remove a dependence on cache.h. Make C files explicitly include
gettext.h if they are using it.
However, while compat/fsmonitor/fsm-ipc-darwin.c should also gain an
include of gettext.h, it was left out to avoid conflicting with an
in-flight topic.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The last git version that had "diff-tree" in the header text
of "git diff-tree" output was v1.3.0 from 2006. The header text
was changed from "diff-tree" to "commit" in 91539833
("Log message printout cleanups").
Given how long ago this change was made, it is highly unlikely that
anyone is still feeding in outputs from that git version.
Remove the handling of the "diff-tree" prefix and document the
source of the other prefixes so that the overall functionality
is more clear.
Signed-off-by: Jerry Zhang <Jerry@skydio.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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There are situations where the user might not want the default
setting where patch-id strips all whitespace. They might be working
in a language where white space is syntactically important, or they
might have CI testing that enforces strict whitespace linting. In
these cases, a whitespace change would result in the patch
fundamentally changing, and thus deserving of a different id.
Add a new mode that is exclusive of --stable and --unstable called
--verbatim. It also corresponds to the config
patchid.verbatim = true. In this mode, the stable algorithm is
used and whitespace is not stripped from the patch text.
Users of --unstable mainly care about compatibility with old git
versions, which unstripping the whitespace would break. Thus there
isn't a usecase for the combination of --verbatim and --unstable,
and we don't expose this so as to not add maintainence burden.
Signed-off-by: Jerry Zhang <jerry@skydio.com>
fixes https://github.com/Skydio/revup/issues/2
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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"git patch-id" currently doesn't produce correct output if the
incoming diff has any binary files. Add logic to get_one_patchid
to handle the different possible styles of binary diff. This
attempts to keep resulting patch-ids identical to what would be
produced by the counterpart logic in diff.c, that is it produces
the id by hashing the a and b oids in succession.
In general we handle binary diffs by first caching the object ids from
the "index" line and using those if we then find an indication
that the diff is binary.
The input could contain patches generated with "git diff --binary". This
currently breaks the parse logic and results in multiple patch-ids
output for a single commit. Here we have to skip the contents of the
patch itself since those do not go into the patch id. --binary
implies --full-index so the object ids are always available.
When the diff is generated with --full-index there is no patch content
to skip over.
When a diff is generated without --full-index or --binary, it will
contain abbreviated object ids. This will still result in a sufficiently
unique patch-id when hashed, but does not match internal patch id
output. We'll call this ok for now as we already need specialized
arguments to diff in order to match internal patch id (namely -U3).
Signed-off-by: Jerry Zhang <Jerry@skydio.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Normally diffs will contain a hunk header of the format
"@@ -2,2 +2,15 @@ code". However when there is only 1 line of
change, the unified diff format allows for the second comma
separated value to be omitted in either before or after
line counts.
This can produce hunk headers that look like
"@@ -2 +2,18 @@ code" or "@@ -2,2 +2 @@ code".
As a result, scan_hunk_header mistakenly returns the line
number as line count, which then results in unpredictable
parsing errors with the rest of the patch, including giving
multiple lines of output for a single commit.
Fix by explicitly setting line count to 1 when there is
no comma, and add a test.
apply.c contains this same logic except it is correct. A
worthwhile future project might be to unify these two diff
parsers so they both benefit from fixes.
Signed-off-by: Jerry Zhang <jerry@skydio.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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flush_current_id() prints the hexadecimal representation of two object
IDs. When the code was added in f97672225b (Add "git-patch-id" program
to generate patch ID's., 2005-06-23), sha1_to_hex() had only a single
internal static buffer, so the result of one invocation had to be stored
in a local buffer.
Since dcb3450fd8 (sha1_to_hex() usage cleanup, 2006-05-03) it rotates
through four buffers, which allows to print up to four object IDs at the
same time. 1a876a69af6 (patch-id: convert to use struct object_id,
2015-03-13) replaced sha1_to_hex() with oid_to_hex(), which has the same
feature. Use it to simplify the code.
Signed-off-by: René Scharfe <l.s.r@web.de>
Acked-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Convert the two separate patch-id implementations to use the_hash_algo
in their implementation.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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We weren't flushing the context each time we processed a hunk in the
patch-id generation code in diff.c, but we were doing that when we
generated "stable" patch-ids with the 'patch-id' tool. Let's port that
similar logic over from patch-id.c into diff.c so we can get the same
hash when we're generating patch-ids for 'format-patch --base=' types of
command invocations.
Cc: Xiaolong Ye <xiaolong.ye@intel.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Stop including config.h by default in cache.h. Instead only include
config.h in those files which require use of the config system.
Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Since we will likely be introducing a new hash function at some point,
and that hash function might be longer than 20 bytes, use the constant
GIT_MAX_RAWSZ, which is designed to be suitable for allocations, instead
of GIT_SHA1_RAWSZ. This will ease the transition down the line by
distinguishing between places where we need to allocate memory suitable
for the largest hash from those where we need to handle the current
hash.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Code clean-up.
* rs/patch-id-use-skip-prefix:
patch-id: use starts_with() and skip_prefix()
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Get rid of magic numbers and avoid running over the end of a NUL
terminated string by using starts_with() and skip_prefix() instead
of memcmp().
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The synopsys text and the usage string of subcommands that read list
of things from the standard input are often shown like this:
git gostak [--distim] < <list-of-doshes>
This is problematic in a number of ways:
* The way to use these commands is more often to feed them the
output from another command, not feed them from a file.
* Manual pages outside Git, commands that operate on the data read
from the standard input, e.g "sort", "grep", "sed", etc., are not
described with such a "< redirection-from-file" in their synopsys
text. Our doing so introduces inconsistency.
* We do not insist on where the output should go, by saying
git gostak [--distim] < <list-of-doshes> > <output>
* As it is our convention to enclose placeholders inside <braket>,
the redirection operator followed by a placeholder filename
becomes very hard to read, both in the documentation and in the
help text.
Let's clean them all up, after making sure that the documentation
clearly describes the modes that take information from the standard
input and what kind of things are expected on the input.
[jc: stole example for fmt-merge-msg from Jonathan]
Helped-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Convert some magic numbers to the new GIT_SHA1 constants.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Patch id changes if users reorder file diffs that make up a patch.
As the result is functionally equivalent, a different patch id is
surprising to many users.
In particular, reordering files using diff -O is helpful to make patches
more readable (e.g. API header diff before implementation diff).
Add an option to change patch-id behaviour making it stable against
these kinds of patch change:
calculate SHA1 hash for each hunk separately and sum all hashes
(using a symmetrical sum) to get patch id
We use a 20byte sum and not xor - since xor would give 0 output
for patches that have two identical diffs, which isn't all that
unlikely (e.g. append the same line in two places).
The new behaviour is enabled
- when patchid.stable is true
- when --stable flag is present
Using a new flag --unstable or setting patchid.stable to false force
the historical behaviour.
In the documentation, clarify that patch ID can now be a sum of hashes,
not a hash.
Document how command line and config options affect the
behaviour.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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get_one_patchid() uses a rather dumb heuristic to determine if the
passed buffer is part of the next commit. Whenever the first 40 bytes
are a valid hexadecimal sha1 representation, get_one_patchid() returns
next_sha1.
Once the current line is longer than the fixed buffer, this will break
(provided the additional bytes make a valid hexadecimal sha1). As a result
patch-id returns incorrect results. Instead, use strbuf and read one line
at a time.
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Michael Schubert <mschub@elegosoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Fix warnings from 'make check'.
- These files don't include 'builtin.h' causing sparse to complain that
cmd_* isn't declared:
builtin/clone.c:364, builtin/fetch-pack.c:797,
builtin/fmt-merge-msg.c:34, builtin/hash-object.c:78,
builtin/merge-index.c:69, builtin/merge-recursive.c:22
builtin/merge-tree.c:341, builtin/mktag.c:156, builtin/notes.c:426
builtin/notes.c:822, builtin/pack-redundant.c:596,
builtin/pack-refs.c:10, builtin/patch-id.c:60, builtin/patch-id.c:149,
builtin/remote.c:1512, builtin/remote-ext.c:240,
builtin/remote-fd.c:53, builtin/reset.c:236, builtin/send-pack.c:384,
builtin/unpack-file.c:25, builtin/var.c:75
- These files have symbols which should be marked static since they're
only file scope:
submodule.c:12, diff.c:631, replace_object.c:92, submodule.c:13,
submodule.c:14, trace.c:78, transport.c:195, transport-helper.c:79,
unpack-trees.c:19, url.c:3, url.c:18, url.c:104, url.c:117, url.c:123,
url.c:129, url.c:136, thread-utils.c:21, thread-utils.c:48
- These files redeclare symbols to be different types:
builtin/index-pack.c:210, parse-options.c:564, parse-options.c:571,
usage.c:49, usage.c:58, usage.c:63, usage.c:72
- These files use a literal integer 0 when they really should use a NULL
pointer:
daemon.c:663, fast-import.c:2942, imap-send.c:1072, notes-merge.c:362
While we're in the area, clean up some unused #includes in builtin files
(mostly exec_cmd.h).
Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Currently, patch-id trips over our very own diff extension for marking
the absence of newline at EOF.
Fix it. (Ignore it, it's whitespace.)
Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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I have an alias that takes two arguments and compares their patch IDs.
I would like to use to make sure I've tested exactly what I submit
(patch by patch), like
git patch-cmp origin/master.. file-being-sent
However, I cannot do that because git patch-id is fooled by the "-- "
trailer that git format-patch puts, or likely by the MIME boundary.
This patch adds hunk parsing logic to git patch-id in order to detect an
out of place "-" line and split the patch when it comes. In addition,
commit ids in the "From " lines are considered and printed in the output.
Signed-off-by: Paolo Bonzini <bonzini@gnu.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This simplifies a bit the next patch, since it will have more than one
condition to exit the loop.
Signed-off-by: Paolo Bonzini <bonzini@gnu.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This shrinks the top-level directory a bit, and makes it much more
pleasant to use auto-completion on the thing. Instead of
[torvalds@nehalem git]$ em buil<tab>
Display all 180 possibilities? (y or n)
[torvalds@nehalem git]$ em builtin-sh
builtin-shortlog.c builtin-show-branch.c builtin-show-ref.c
builtin-shortlog.o builtin-show-branch.o builtin-show-ref.o
[torvalds@nehalem git]$ em builtin-shor<tab>
builtin-shortlog.c builtin-shortlog.o
[torvalds@nehalem git]$ em builtin-shortlog.c
you get
[torvalds@nehalem git]$ em buil<tab> [type]
builtin/ builtin.h
[torvalds@nehalem git]$ em builtin [auto-completes to]
[torvalds@nehalem git]$ em builtin/sh<tab> [type]
shortlog.c shortlog.o show-branch.c show-branch.o show-ref.c show-ref.o
[torvalds@nehalem git]$ em builtin/sho [auto-completes to]
[torvalds@nehalem git]$ em builtin/shor<tab> [type]
shortlog.c shortlog.o
[torvalds@nehalem git]$ em builtin/shortlog.c
which doesn't seem all that different, but not having that annoying
break in "Display all 180 possibilities?" is quite a relief.
NOTE! If you do this in a clean tree (no object files etc), or using an
editor that has auto-completion rules that ignores '*.o' files, you
won't see that annoying 'Display all 180 possibilities?' message - it
will just show the choices instead. I think bash has some cut-off
around 100 choices or something.
So the reason I see this is that I'm using an odd editory, and thus
don't have the rules to cut down on auto-completion. But you can
simulate that by using 'ls' instead, or something similar.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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