shell_esc          80 srclib/apr/build/aplibtool.c char *shell_esc(const char *str);
shell_esc         512 srclib/apr/build/aplibtool.c     command = shell_esc(command);
shell_esc         487 srclib/apr/build/jlibtool.c     command = shell_esc(flatten_count_chars(&tmpcc, 1));