+static int cmd_log(int argc, const char **argv, char **envp)
+{
+ struct rev_info rev;
+ struct commit *commit;
+ char *buf = xmalloc(LOGSIZE);
+ static enum cmit_fmt commit_format = CMIT_FMT_DEFAULT;
+ int abbrev = DEFAULT_ABBREV;
+ int show_parents = 0;
+ const char *commit_prefix = "commit ";
+
+ argc = setup_revisions(argc, argv, &rev, "HEAD");
+ while (1 < argc) {
+ const char *arg = argv[1];
+ if (!strncmp(arg, "--pretty", 8)) {
+ commit_format = get_commit_format(arg + 8);
+ if (commit_format == CMIT_FMT_ONELINE)
+ commit_prefix = "";
+ }
+ else if (!strcmp(arg, "--parents")) {
+ show_parents = 1;
+ }
+ else if (!strcmp(arg, "--no-abbrev")) {
+ abbrev = 0;
+ }
+ else if (!strncmp(arg, "--abbrev=", 9)) {
+ abbrev = strtoul(arg + 9, NULL, 10);
+ if (abbrev && abbrev < MINIMUM_ABBREV)
+ abbrev = MINIMUM_ABBREV;
+ else if (40 < abbrev)
+ abbrev = 40;
+ }
+ else
+ die("unrecognized argument: %s", arg);
+ argc--; argv++;
+ }