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line-range: teach -L^:RE to search from start of file

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The -L:RE option of blame/log searches from the end of the previous -L
range, if any. Add new notation -L^:RE to override this behavior and
search from start of file.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Eric Sunshine 2013-08-06 09:59:47 -04:00 committed by Junio C Hamano
parent 1ce761a524
commit 215e76c7ff
4 changed files with 26 additions and 2 deletions
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1
Documentation/line-range-format.txt
View File

@ -26,3 +26,4 @@ If ``:<regex>'' is given in place of <start> and <end>, it denotes the range
from the first funcname line that matches <regex>, up to the next
funcname line. ``:<regex>'' searches from the end of the previous `-L` range,
if any, otherwise from the start of file.
``^:<regex>'' searches from the start of file.

9
line-range.c
View File

@ -173,6 +173,11 @@ static const char *parse_range_funcname(const char *arg, nth_line_fn_t nth_line_
int reg_error;
regex_t regexp;
if (*arg == '^') {
anchor = 1;
arg++;
}
assert(*arg == ':');
term = arg+1;
while (*term && *term != ':') {
@ -245,7 +250,7 @@ int parse_range_arg(const char *arg, nth_line_fn_t nth_line_cb,
if (anchor > lines)
anchor = lines + 1;
if (*arg == ':') {
if (*arg == ':' || (*arg == '^' && *(arg + 1) == ':')) {
arg = parse_range_funcname(arg, nth_line_cb, cb_data, lines, anchor, begin, end, path);
if (!arg || *arg)
return -1;
@ -270,7 +275,7 @@ int parse_range_arg(const char *arg, nth_line_fn_t nth_line_cb,
const char *skip_range_arg(const char *arg)
{
if (*arg == ':')
if (*arg == ':' || (*arg == '^' && *(arg + 1) == ':'))
return parse_range_funcname(arg, NULL, NULL, 0, 0, NULL, NULL, NULL);
arg = parse_loc(arg, NULL, NULL, 0, -1, NULL);

17
t/annotate-tests.sh
View File

@ -398,6 +398,23 @@ test_expect_success 'blame -L :RE (relative: end-of-file)' '
test_must_fail $PROG -L, -L:main hello.c
'
test_expect_success 'blame -L ^:RE (absolute)' '
check_count -f hello.c -L3,3 -L^:ma.. F 4 G 1
'
test_expect_success 'blame -L ^:RE (absolute: no preceding range)' '
check_count -f hello.c -L^:ma.. F 4 G 1
'
test_expect_success 'blame -L ^:RE (absolute: not found)' '
test_must_fail $PROG -L4,4 -L^:tambourine hello.c
'
test_expect_success 'blame -L ^:RE (absolute: end-of-file)' '
n=$(printf "%d" $(wc -l <hello.c)) &&
check_count -f hello.c -L$n -L^:ma.. F 4 G 1 H 1
'
test_expect_success 'setup incremental' '
(
GIT_AUTHOR_NAME=I &&

1
t/t4211-line-log.sh
View File

@ -48,6 +48,7 @@ canned_test "-M -L '/long f/,/^}/:b.c' move-support" move-support-f
canned_test "-M -L ':f:b.c' parallel-change" parallel-change-f-to-main
canned_test "-L 4,12:a.c -L :main:a.c simple" multiple
canned_test "-L 4,18:a.c -L ^:main:a.c simple" multiple-overlapping
canned_test "-L :main:a.c -L 4,18:a.c simple" multiple-overlapping
canned_test "-L 4:a.c -L 8,12:a.c simple" multiple-superset
canned_test "-L 8,12:a.c -L 4:a.c simple" multiple-superset