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Diffstat (limited to 'Documentation/git-rev-list.txt')
| -rw-r--r-- | Documentation/git-rev-list.txt | 72 |
1 files changed, 38 insertions, 34 deletions
diff --git a/Documentation/git-rev-list.txt b/Documentation/git-rev-list.txt index 02ee93e..f386a3a 100644 --- a/Documentation/git-rev-list.txt +++ b/Documentation/git-rev-list.txt @@ -22,65 +22,69 @@ that point. Their parents are implied. "git-rev-list foo bar ^baz" thus means "list all the commits which are included in 'foo' and 'bar', but not in 'baz'". -If *--pretty* is specified, print the contents of the commit changesets -in human-readable form. - -The *--objects* flag causes 'git-rev-list' to print the object IDs of -any object referenced by the listed commits. 'git-rev-list --objects foo -^bar' thus means "send me all object IDs which I need to download if -I have the commit object 'bar', but not 'foo'". - -The *--bisect* flag limits output to the one commit object which is -roughly halfway between the included and excluded commits. Thus, -if 'git-rev-list --bisect foo ^bar -^baz' outputs 'midpoint', the output -of 'git-rev-list foo ^midpoint' and 'git-rev-list midpoint -^bar -^baz' -would be of roughly the same length. Finding the change which introduces -a regression is thus reduced to a binary search: repeatedly generate and -test new 'midpoint's until the commit chain is of length one. - -If *--merge-order* is specified, the commit history is decomposed into a -unique sequence of minimal, non-linear epochs and maximal, linear epochs. -Non-linear epochs are then linearised by sorting them into merge order, which -is described below. - +OPTIONS +------- +--pretty:: + Print the contents of the commit changesets in human-readable form. + +--objects:: + Print the object IDs of any object referenced by the listed commits. + 'git-rev-list --objects foo ^bar' thus means "send me all object IDs + which I need to download if I have the commit object 'bar', but + not 'foo'". + +--bisect:: + Limit output to the one commit object which is roughly halfway + between the included and excluded commits. Thus, if 'git-rev-list + --bisect foo ^bar ^baz' outputs 'midpoint', the output + of 'git-rev-list foo ^midpoint' and 'git-rev-list midpoint + ^bar ^baz' would be of roughly the same length. Finding the change + which introduces a regression is thus reduced to a binary search: + repeatedly generate and test new 'midpoint's until the commit chain + is of length one. + +--merge-order:: + When specified the commit history is decomposed into a unique + sequence of minimal, non-linear epochs and maximal, linear epochs. + Non-linear epochs are then linearised by sorting them into merge + order, which is described below. ++ Maximal, linear epochs correspond to periods of sequential development. Minimal, non-linear epochs correspond to periods of divergent development followed by a converging merge. The theory of epochs is described in more detail at link:http://blackcubes.dyndns.org/epoch/[http://blackcubes.dyndns.org/epoch/]. - ++ The merge order for a non-linear epoch is defined as a linearisation for which the following invariants are true: - ++ 1. if a commit P is reachable from commit N, commit P sorts after commit N in the linearised list. 2. if Pi and Pj are any two parents of a merge M (with i < j), then any commit N, such that N is reachable from Pj but not reachable from Pi, sorts before all commits reachable from Pi. - ++ Invariant 1 states that later commits appear before earlier commits they are derived from. - ++ Invariant 2 states that commits unique to "later" parents in a merge, appear before all commits from "earlier" parents of a merge. -If *--show-breaks* is specified, each item of the list is output with a -2-character prefix consisting of one of: (|), (^), (=) followed by a space. - +--show-breaks:: + Each item of the list is output with a 2-character prefix consisting + of one of: (|), (^), (=) followed by a space. ++ Commits marked with (=) represent the boundaries of minimal, non-linear epochs and correspond either to the start of a period of divergent development or to the end of such a period. - ++ Commits marked with (|) are direct parents of commits immediately preceding the marked commit in the list. - ++ Commits marked with (^) are not parents of the immediately preceding commit. These "breaks" represent necessary discontinuities implied by trying to represent an arbtirary DAG in a linear form. - ++ *--show-breaks* is only valid if *--merge-order* is also specified. Author |