ch_back_get
(void) ch_back_get();
chget = (forwdir) ? ch_forw_get : ch_back_get;
int ch_back_get(void);
(void) ch_back_get();
(void) ch_back_get();
(void) ch_back_get(); /* Restore our position */
(void) ch_back_get();
while ((c = ch_back_get()) == '\n' || c == '\r')
c = ch_back_get();
(void) ch_back_get();
c = ch_back_get();
while ((c = ch_back_get()) != '\n' && c != EOI)
c = ch_back_get();