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builtin/merge-file.c: use error_errno()
All these error() calls do not print error message previously, but because when they are called, errno should be set. Use error_errno() instead to give more information. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -62,8 +62,7 @@ int cmd_merge_file(int argc, const char **argv, const char *prefix)
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usage_with_options(merge_file_usage, options);
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if (quiet) {
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if (!freopen("/dev/null", "w", stderr))
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return error("failed to redirect stderr to /dev/null: "
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"%s", strerror(errno));
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return error_errno("failed to redirect stderr to /dev/null");
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}
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if (prefix)
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@ -95,12 +94,13 @@ int cmd_merge_file(int argc, const char **argv, const char *prefix)
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FILE *f = to_stdout ? stdout : fopen(fpath, "wb");
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if (!f)
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ret = error("Could not open %s for writing", filename);
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ret = error_errno("Could not open %s for writing",
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filename);
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else if (result.size &&
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fwrite(result.ptr, result.size, 1, f) != 1)
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ret = error("Could not write to %s", filename);
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ret = error_errno("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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ret = error_errno("Could not close %s", filename);
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free(result.ptr);
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}
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