git/diffcore-rename.c, branch v2.18.2

Merge branch 'po/object-id'

2018-02-15T22:55:43Z

Conversion from uchar[20] to struct object_id continues. * po/object-id: sha1_file: rename hash_sha1_file_literally sha1_file: convert write_loose_object to object_id sha1_file: convert force_object_loose to object_id sha1_file: convert write_sha1_file to object_id notes: convert write_notes_tree to object_id notes: convert combine_notes_* to object_id commit: convert commit_tree* to object_id match-trees: convert splice_tree to object_id cache: clear whole hash buffer with oidclr sha1_file: convert hash_sha1_file to object_id dir: convert struct sha1_stat to use object_id sha1_file: convert pretend_sha1_file to object_id

sha1_file: convert hash_sha1_file to object_id

2018-01-30T18:42:36Z

Convert the declaration and definition of hash_sha1_file to use struct object_id and adjust all function calls. Rename this function to hash_object_file. Signed-off-by: Patryk Obara Signed-off-by: Junio C Hamano

Use MOVE_ARRAY

2018-01-22T19:32:51Z

Use the helper macro MOVE_ARRAY to move arrays. This is shorter and safer, as it automatically infers the size of elements. Patch generated by Coccinelle and contrib/coccinelle/array.cocci in Travis CI's static analysis build job. Signed-off-by: SZEDER Gábor Signed-off-by: Junio C Hamano

diffcore-rename: make diff-tree -l0 mean -l

2017-12-03T06:16:57Z

In the documentation of diff-tree, it is stated that the -l option "prevents rename/copy detection from running if the number of rename/copy targets exceeds the specified number". The documentation does not mention any special handling for the number 0, but the implementation before commit 9f7e4bfa3b ("diff: remove silent clamp of renameLimit", 2017-11-13) treated 0 as a special value indicating that the rename limit is to be a very large number instead. The commit 9f7e4bfa3b changed that behavior, treating 0 as 0. Revert this behavior to what it was previously. This allows existing scripts and tools that use "-l0" to continue working. The alternative (to have "-l0" suppress rename detection) is probably much less useful, since users can just refrain from specifying -M and/or -C to have the same effect. Signed-off-by: Jonathan Tan Reviewed-by: Jonathan Nieder Reviewed-by: Elijah Newren Signed-off-by: Junio C Hamano

diff: remove silent clamp of renameLimit

2017-11-15T04:11:25Z

In commit 0024a5492 (Fix the rename detection limit checking; 2007-09-14), the renameLimit was clamped to 32767. This appears to have been to simply avoid integer overflow in the following computation: num_create * num_src <= rename_limit * rename_limit although it also could be viewed as a hardcoded bound on the amount of CPU time we're willing to allow users to tell git to spend on handling renames. An upper bound may make sense, but unfortunately this upper bound was neither communicated to the users, nor documented anywhere. Although large limits can make things slow, we have users who would be ecstatic to have a small five file change be correctly cherry picked even if they have to manually specify a large limit and wait ten minutes for the renames to be detected. Signed-off-by: Elijah Newren Signed-off-by: Junio C Hamano

progress: fix progress meters when dealing with lots of work

2017-11-15T04:11:25Z

The possibility of setting merge.renameLimit beyond 2^16 raises the possibility that the values passed to progress can exceed 2^32. Use uint64_t, because it "ought to be enough for anybody". :-) Signed-off-by: Elijah Newren Signed-off-by: Junio C Hamano

diff: make struct diff_flags members lowercase

2017-11-01T02:51:40Z

Now that the flags stored in struct diff_flags are being accessed directly and not through macros, change all struct members from being uppercase to lowercase. This conversion is done using the following semantic patch: @@ expression E; @@ - E.RECURSIVE + E.recursive @@ expression E; @@ - E.TREE_IN_RECURSIVE + E.tree_in_recursive @@ expression E; @@ - E.BINARY + E.binary @@ expression E; @@ - E.TEXT + E.text @@ expression E; @@ - E.FULL_INDEX + E.full_index @@ expression E; @@ - E.SILENT_ON_REMOVE + E.silent_on_remove @@ expression E; @@ - E.FIND_COPIES_HARDER + E.find_copies_harder @@ expression E; @@ - E.FOLLOW_RENAMES + E.follow_renames @@ expression E; @@ - E.RENAME_EMPTY + E.rename_empty @@ expression E; @@ - E.HAS_CHANGES + E.has_changes @@ expression E; @@ - E.QUICK + E.quick @@ expression E; @@ - E.NO_INDEX + E.no_index @@ expression E; @@ - E.ALLOW_EXTERNAL + E.allow_external @@ expression E; @@ - E.EXIT_WITH_STATUS + E.exit_with_status @@ expression E; @@ - E.REVERSE_DIFF + E.reverse_diff @@ expression E; @@ - E.CHECK_FAILED + E.check_failed @@ expression E; @@ - E.RELATIVE_NAME + E.relative_name @@ expression E; @@ - E.IGNORE_SUBMODULES + E.ignore_submodules @@ expression E; @@ - E.DIRSTAT_CUMULATIVE + E.dirstat_cumulative @@ expression E; @@ - E.DIRSTAT_BY_FILE + E.dirstat_by_file @@ expression E; @@ - E.ALLOW_TEXTCONV + E.allow_textconv @@ expression E; @@ - E.TEXTCONV_SET_VIA_CMDLINE + E.textconv_set_via_cmdline @@ expression E; @@ - E.DIFF_FROM_CONTENTS + E.diff_from_contents @@ expression E; @@ - E.DIRTY_SUBMODULES + E.dirty_submodules @@ expression E; @@ - E.IGNORE_UNTRACKED_IN_SUBMODULES + E.ignore_untracked_in_submodules @@ expression E; @@ - E.IGNORE_DIRTY_SUBMODULES + E.ignore_dirty_submodules @@ expression E; @@ - E.OVERRIDE_SUBMODULE_CONFIG + E.override_submodule_config @@ expression E; @@ - E.DIRSTAT_BY_LINE + E.dirstat_by_line @@ expression E; @@ - E.FUNCCONTEXT + E.funccontext @@ expression E; @@ - E.PICKAXE_IGNORE_CASE + E.pickaxe_ignore_case @@ expression E; @@ - E.DEFAULT_FOLLOW_RENAMES + E.default_follow_renames Signed-off-by: Brandon Williams Signed-off-by: Junio C Hamano

diff: remove DIFF_OPT_TST macro

2017-11-01T02:50:03Z

Remove the `DIFF_OPT_TST` macro and instead access the flags directly. This conversion is done using the following semantic patch: @@ expression E; identifier fld; @@ - DIFF_OPT_TST(&E, fld) + E.flags.fld @@ type T; T *ptr; identifier fld; @@ - DIFF_OPT_TST(ptr, fld) + ptr->flags.fld Signed-off-by: Brandon Williams Signed-off-by: Junio C Hamano

progress: simplify "delayed" progress API

2017-08-19T21:01:34Z

We used to expose the full power of the delayed progress API to the callers, so that they can specify, not just the message to show and expected total amount of work that is used to compute the percentage of work performed so far, the percent-threshold parameter P and the delay-seconds parameter N. The progress meter starts to show at N seconds into the operation only if we have not yet completed P per-cent of the total work. Most callers used either (0%, 2s) or (50%, 1s) as (P, N), but there are oddballs that chose more random-looking values like 95%. For a smoother workload, (50%, 1s) would allow us to start showing the progress meter earlier than (0%, 2s), while keeping the chance of not showing progress meter for long running operation the same as the latter. For a task that would take 2s or more to complete, it is likely that less than half of it would complete within the first second, if the workload is smooth. But for a spiky workload whose earlier part is easier, such a setting is likely to fail to show the progress meter entirely and (0%, 2s) is more appropriate. But that is merely a theory. Realistically, it is of dubious value to ask each codepath to carefully consider smoothness of their workload and specify their own setting by passing two extra parameters. Let's simplify the API by dropping both parameters and have everybody use (0%, 2s). Oh, by the way, the percent-threshold parameter and the structure member were consistently misspelled, which also is now fixed ;-) Helped-by: Jeff King Signed-off-by: Junio C Hamano

hashmap.h: compare function has access to a data field

2017-06-30T19:49:28Z

When using the hashmap a common need is to have access to caller provided data in the compare function. A couple of times we abuse the keydata field to pass in the data needed. This happens for example in patch-ids.c. This patch changes the function signature of the compare function to have one more void pointer available. The pointer given for each invocation of the compare function must be defined in the init function of the hashmap and is just passed through. Documentation of this new feature is deferred to a later patch. This is a rather mechanical conversion, just adding the new pass-through parameter. However while at it improve the naming of the fields of all compare functions used by hashmaps by ensuring unused parameters are prefixed with 'unused_' and naming the parameters what they are (instead of 'unused' make it 'unused_keydata'). Signed-off-by: Stefan Beller Signed-off-by: Junio C Hamano