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- schhist/gitwhoareyounow: trace a file name in git history across renames - schhist/README: documentation of tools, starting with gitwhoareyounow
47 lines
1.4 KiB
Plaintext
47 lines
1.4 KiB
Plaintext
gitwhoareyounow
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---------------
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gitwhoareyounow is used to find a single identity for files that have been
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renamed in the history of a project.
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E.g., if a file foo.c is created in revision 1 (assuming successive revisions
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numbered 1, 2, etc.) and renamed to bar.c in revision 2, gitwhoareyounow
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would then return the name bar.c for this file in any revision we consider.
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gitwhoareyounow has to be given a repository in which the historical commit
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has been checked out, and the name the file had in that commit.
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Example:
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$ git init
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$ date >foo.c
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# git add foo.c
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# git commit -m "foo.c, rev 1"
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$ git mv foo.c bar.c
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$ git commit -m "foo.c renamed to bar.c, rev 2"
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$ git checkout HEAD~1
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$ ls
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foo.c
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$ gitwhoareyounow . foo.c
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bar.c
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Multiple files may use the same identity
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- - - - - - - - - - - - - - - - - - - -
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E.g., if a file foo.c is created in revision 1, deleted in revision 3, and
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then a new file named foo.c is created in revision 4, gitwhoareyounow would
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call both of them foo.c
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Multiple files sharing the same identity can conflict
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- - - - - - - - - - - - - - - - - - - - - - - - - - -
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E.g., taking the first example with foo.c renamed to bar.c in revision 3, if
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a file bar.c existed in revision 1 but was deleted in revision 2,
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gitwhoareyounow running on revision 1 would identify both the foo.c and the
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bar.c as bar.c
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gitwhoareyounow does not try to resolve such conflicts. This is already
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complex enough as it is :-)
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