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ee95ec5d58
When a merge conflicts, there are often common lines that are not really common, such as empty lines or lines containing a single curly bracket. With XDL_MERGE_ZEALOUS_ALNUM, we use the following heuristics: when a hunk does not contain any letters or digits, it is treated as conflicting. In other words, a conflict which used to look like this: <<<<<<< a = 1; ======= output(); >>>>>>> } } } <<<<<<< output(); ======= b = 1; >>>>>>> will look like this with ZEALOUS_ALNUM: <<<<<<< a = 1; } } } output(); ======= output(); } } } b = 1; >>>>>>> To demonstrate this, git-merge-file has been switched from XDL_MERGE_ZEALOUS to XDL_MERGE_ZEALOUS_ALNUM. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
#include "builtin.h"
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#include "cache.h"
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#include "xdiff/xdiff.h"
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#include "xdiff-interface.h"
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static const char merge_file_usage[] =
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"git merge-file [-p | --stdout] [-q | --quiet] [-L name1 [-L orig [-L name2]]] file1 orig_file file2";
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int cmd_merge_file(int argc, const char **argv, const char *prefix)
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{
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const char *names[3];
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mmfile_t mmfs[3];
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mmbuffer_t result = {NULL, 0};
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xpparam_t xpp = {XDF_NEED_MINIMAL};
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int ret = 0, i = 0, to_stdout = 0;
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while (argc > 4) {
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if (!strcmp(argv[1], "-L") && i < 3) {
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names[i++] = argv[2];
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argc--;
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argv++;
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} else if (!strcmp(argv[1], "-p") ||
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!strcmp(argv[1], "--stdout"))
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to_stdout = 1;
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else if (!strcmp(argv[1], "-q") ||
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!strcmp(argv[1], "--quiet"))
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freopen("/dev/null", "w", stderr);
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else
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usage(merge_file_usage);
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argc--;
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argv++;
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}
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if (argc != 4)
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usage(merge_file_usage);
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for (; i < 3; i++)
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names[i] = argv[i + 1];
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for (i = 0; i < 3; i++) {
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if (read_mmfile(mmfs + i, argv[i + 1]))
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return -1;
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if (buffer_is_binary(mmfs[i].ptr, mmfs[i].size))
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return error("Cannot merge binary files: %s\n",
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argv[i + 1]);
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}
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ret = xdl_merge(mmfs + 1, mmfs + 0, names[0], mmfs + 2, names[2],
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&xpp, XDL_MERGE_ZEALOUS_ALNUM, &result);
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for (i = 0; i < 3; i++)
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free(mmfs[i].ptr);
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if (ret >= 0) {
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const char *filename = argv[1];
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FILE *f = to_stdout ? stdout : fopen(filename, "wb");
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if (!f)
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ret = error("Could not open %s for writing", filename);
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else if (fwrite(result.ptr, result.size, 1, f) != 1)
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ret = error("Could not write to %s", filename);
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else if (fclose(f))
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ret = error("Could not close %s", filename);
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free(result.ptr);
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}
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return ret;
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}
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