Make a printable key sequence
char *SLang_make_keystring (unsigned char *ks);
The SLang_make_keystring function takes a raw key sequence
ks and converts it to a printable form by converting
characters such as ASCII 1 (ctrl-A) to ^A. That is, it
performs the opposite function of SLang_process_keystring.
This function returns a pointer to a static area that will be
overwritten on the next call to SLang_make_keystring.
SLang_process_keystring