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Revision 044fb190f75cdec35e56bde30ec214ab144311d9 authored by Johannes Schindelin on 09 July 2016, 07:23:55 UTC, committed by Junio C Hamano on 11 July 2016, 18:55:53 UTC 
diff: fix a double off-by-one with --ignore-space-at-eol
 
When comparing two lines, ignoring any whitespace at the end, we first
try to match as many bytes as possible and break out of the loop only
upon mismatch, to let the remainder be handled by the code shared with
the other whitespace-ignoring code paths.

When comparing the bytes, however, we incremented the counters always,
even if the bytes did not match. And because we fall through to  the
space-at-eol handling at that point, it is as if that mismatch never
happened.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent a5229cc
Raw File
test-sha1-array.c 
#include "cache.h"
#include "sha1-array.h"

static void print_sha1(const unsigned char sha1[20], void *data)
{
	puts(sha1_to_hex(sha1));
}

int main(int argc, char **argv)
{
	struct sha1_array array = SHA1_ARRAY_INIT;
	struct strbuf line = STRBUF_INIT;

	while (strbuf_getline(&line, stdin, '\n') != EOF) {
		const char *arg;
		unsigned char sha1[20];

		if (skip_prefix(line.buf, "append ", &arg)) {
			if (get_sha1_hex(arg, sha1))
				die("not a hexadecimal SHA1: %s", arg);
			sha1_array_append(&array, sha1);
		} else if (skip_prefix(line.buf, "lookup ", &arg)) {
			if (get_sha1_hex(arg, sha1))
				die("not a hexadecimal SHA1: %s", arg);
			printf("%d\n", sha1_array_lookup(&array, sha1));
		} else if (!strcmp(line.buf, "clear"))
			sha1_array_clear(&array);
		else if (!strcmp(line.buf, "for_each_unique"))
			sha1_array_for_each_unique(&array, print_sha1, NULL);
		else
			die("unknown command: %s", line.buf);
	}
	return 0;
}
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