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range-diff: don't remove funcname from inner diff 

When postprocessing the inner diff in range-diff, we currently replace
the whole hunk header line with just "@@".  This matches how 'git
tbdiff' used to handle hunk headers as well.

Most likely this is being done because line numbers in the hunk header
are not relevant without other changes.  They can for example easily
change if a range is rebased, and lines are added/removed before a
change that we actually care about in our ranges.

However it can still be useful to have the function name that 'git
diff' extracts as additional context for the change.

Note that it is not guaranteed that the hunk header actually shows up
in the range-diff, and this change only aims to improve the case where
a hunk header would already be included in the final output.

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Thomas Gummerer 2019-07-11 17:08:47 +01:00 committed by Junio C Hamano
parent 44b67cb62b
commit e1db263084
2 changed files with 7 additions and 6 deletions
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7
range-diff.c
View File

@ -119,9 +119,10 @@ static int read_patches(const char *range, struct string_list *list)
strbuf_addch(&buf, '\n');
}
continue;
} else if (starts_with(line, "@@ "))
strbuf_addstr(&buf, "@@");
else if (!line[0] || starts_with(line, "index "))
} else if (skip_prefix(line, "@@ ", &p)) {
p = strstr(p, "@@");
strbuf_addstr(&buf, p ? p : "@@");
} else if (!line[0] || starts_with(line, "index "))
/*
* A completely blank (not ' \n', which is context)
* line is not valid in a diff. We skip it

6
t/t3206-range-diff.sh
View File

@ -110,7 +110,7 @@ test_expect_success 'changed commit' '
14
4: a63e992 ! 4: d966c5c s/12/B/
@@ -8,7 +8,7 @@
@@
@@ A
9
10
- B
@ -169,7 +169,7 @@ test_expect_success 'changed commit with sm config' '
14
4: a63e992 ! 4: d966c5c s/12/B/
@@ -8,7 +8,7 @@
@@
@@ A
9
10
- B
@ -231,7 +231,7 @@ test_expect_success 'dual-coloring' '
: 14<RESET>
:<RED>4: d966c5c <RESET><YELLOW>!<RESET><GREEN> 4: 8add5f1<RESET><YELLOW> s/12/B/<RESET>
: <REVERSE><CYAN>@@ -8,7 +8,7 @@<RESET>
: <CYAN> @@<RESET>
: <CYAN> @@ A<RESET>
: 9<RESET>
: 10<RESET>
: <REVERSE><RED>-<RESET><FAINT> BB<RESET>