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Diffstat (limited to 'RelNotes')
| l---------[-rw-r--r--] | RelNotes | 113 |
1 files changed, 1 insertions, 112 deletions
diff --git a/RelNotes b/RelNotes index 46e159c68d..8d0b1654d2 100644..120000 --- a/RelNotes +++ b/RelNotes @@ -1,112 +1 @@ -Git Release Notes -================= - -Backward Compatibility Notes ----------------------------- - - * "git branch -l <foo>" used to be a way to ask a reflog to be - created while creating a new branch, but that is no longer the - case. It is a short-hand for "git branch --list <foo>" now. - - * "git push" into refs/tags/* hierarchy is rejected without getting - forced, but "git fetch" (misguidedly) used the "fast forwarding" - rule used for the refs/heads/* hierarchy; this has been corrected, - which means some fetches of tags that did not fail with older - version of Git will fail without "--force" with this version. - - -Updates since v2.19 -------------------- - -UI, Workflows & Features - - * Running "git clone" against a project that contain two files with - pathnames that differ only in cases on a case insensitive - filesystem would result in one of the files lost because the - underlying filesystem is incapable of holding both at the same - time. An attempt is made to detect such a case and warn. - - * "git checkout -b newbranch [HEAD]" should not have to do as much as - checking out a commit different from HEAD. An attempt is made to - optimize this special case. - - * "git rev-list --stdin </dev/null" used to be an error; it now shows - no output without an error. "git rev-list --stdin --default HEAD" - still falls back to the given default when nothing is given on the - standard input. - - * Lift code from GitHub to restrict delta computation so that an - object that exists in one fork is not made into a delta against - another object that does not appear in the same forked repository. - - * "git format-patch" learned new "--interdiff" and "--range-diff" - options to explain the difference between this version and the - previous attempt in the cover letter (or after the tree-dashes as - a comment). - - * "git mailinfo" used in "git am" learned to make a best-effort - recovery of a patch corrupted by MUA that sends text/plain with - format=flawed option. - (merge 3aa4d81f88 rs/mailinfo-format-flowed later to maint). - - * The rules used by "git push" and "git fetch" to determine if a ref - can or cannot be updated were inconsistent; specifically, fetching - to update existing tags were allowed even though tags are supposed - to be unmoving anchoring points. "git fetch" was taught to forbid - updates to existing tags without the "--force" option. - - -Performance, Internal Implementation, Development Support etc. - - * When there are too many packfiles in a repository (which is not - recommended), looking up an object in these would require - consulting many pack .idx files; a new mechanism to have a single - file that consolidates all of these .idx files is introduced. - - * "git submodule update" is getting rewritten piece-by-piece into C. - - * The code for computing history reachability has been shuffled, - obtained a bunch of new tests to cover them, and then being - improved. - - * The unpack_trees() API used in checking out a branch and merging - walks one or more trees along with the index. When the cache-tree - in the index tells us that we are walking a tree whose flattened - contents is known (i.e. matches a span in the index), as linearly - scanning a span in the index is much more efficient than having to - open tree objects recursively and listing their entries, the walk - can be optimized, which has been done. - - * When creating a thin pack, which allows objects to be made into a - delta against another object that is not in the resulting pack but - is known to be present on the receiving end, the code learned to - take advantage of the reachability bitmap; this allows the server - to send a delta against a base beyond the "boundary" commit. - - * spatch transformation to replace boolean uses of !hashcmp() to - newly introduced oideq() is added, and applied, to regain - performance lost due to support of multiple hash algorithms. - - * Fix a bug in which the same path could be registered under multiple - worktree entries if the path was missing (for instance, was removed - manually). Also, as a convenience, expand the number of cases in - which --force is applicable. - - -Fixes since v2.19 ------------------ - - * "git interpret-trailers" and its underlying machinery had a buggy - code that attempted to ignore patch text after commit log message, - which triggered in various codepaths that will always get the log - message alone and never get such an input. - (merge 66e83d9b41 jk/trailer-fixes later to maint). - - * Malformed or crafted data in packstream can make our code attempt - to read or write past the allocated buffer and abort, instead of - reporting an error, which has been fixed. - - * Code cleanup, docfix, build fix, etc. - (merge 96a7501aad ts/doc-build-manpage-xsl-quietly later to maint). - (merge b9b07efdb2 tg/conflict-marker-size later to maint). - (merge fa0aeea770 sg/doc-trace-appends later to maint). +Documentation/RelNotes/2.20.0.txt
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