contrib/tcsh/sh.lex.c

74  * of ungetC and unreadc.  The key observation is that the state
166 	unreadc(c);
716 	ungetC('s'), unreadc(HISTSUB), c = ':';
725 	unreadc(c);
754     unreadc(c);
818 		unreadc(delim);
828 		    unreadc(c);
851 		    unreadc(c);
868 		unreadc(c);
880     unreadc(c);
1101 	    unreadc(c);
1145 	unreadc(c);
1150 	unreadc(c);
1207 		unreadc(c);
1222 	    unreadc(c);
1254 		    unreadc(c);
1347 unreadc(Char c)