Function is_gitmodules_unmerged

submodule.c:47–61

* Check if the .gitmodules file is unmerged. Parsing of the .gitmodules file * will be disabled because we can't guess what might be configured in * .gitmodules unless the user resolves the conflict. */

 * .gitmodules unless the user resolves the conflict.
 */
int is_gitmodules_unmerged(struct index_state *istate)
{
	int pos = index_name_pos(istate, GITMODULES_FILE, strlen(GITMODULES_FILE));
	if (pos < 0) { /* .gitmodules not found or isn't merged */
		pos = -1 - pos;
		if (istate->cache_nr > pos) {  /* there is a .gitmodules */
			const struct cache_entry *ce = istate->cache[pos];
			if (ce_namelen(ce) == strlen(GITMODULES_FILE) &&
			    !strcmp(ce->name, GITMODULES_FILE))
				return 1;
		}
	}

	return 0;
}

/*
 * Check if the .gitmodules file is safe to write.