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blame: prevent error if range ends past end of file

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If the -L option is used to specify a line range in git blame, and the
end of the range is past the end of the file, git will fail with a fatal
error. This commit prevents such behavior - instead we display the blame
for existing lines within the specified range. Tests are amended
accordingly.

This commit also fixes two corner cases. Blaming -L n,-(n+1) now blames
the first n lines of a file rather than from n to the end of the file.
Blaming -L ,-n will be treated as -L 1,-n and blame the first line of
the file, rather than blaming the whole file.

Signed-off-by: Isabella Stephens <istephens@atlassian.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Isabella Stephens
2018-06-15 16:29:27 +10:00
committed by Junio C Hamano
parent fc54c1af3e
commit 96cfa94e68
4 changed files with 13 additions and 9 deletions
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4
t/annotate-tests.sh
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@ -320,11 +320,11 @@ test_expect_success 'blame -L ,Y (Y == nlines)' '
test_expect_success 'blame -L ,Y (Y == nlines + 1)' '
n=$(expr $(wc -l <file) + 2) &&
test_must_fail $PROG -L,$n file
check_count -L,$n A 1 B 1 B1 1 B2 1 "A U Thor" 1 C 1 D 1 E 1
'
test_expect_success 'blame -L ,Y (Y > nlines)' '
test_must_fail $PROG -L,12345 file
check_count -L,12345 A 1 B 1 B1 1 B2 1 "A U Thor" 1 C 1 D 1 E 1
'
test_expect_success 'blame -L multiple (disjoint)' '