improve_chunk

+ in text.c:
int
Open_Text_Third_Pass(const struct text *txt) {
	last_tk_cnt = 0;
	last_nl_cnt = 1;
	lex_nl_cnt = 1;
	lex_tk_cnt = 0;

	return Open_Stream(txt->tx_fname);
}

+ in text.h:
extern int Open_Text_Third_Pass(const struct text *txt);

+ in pass3.c:

#include	"stream.h"
#include	"lang.h"

							/* CHUNK IMPROVEMENT */

static void
improve_chunk(const struct chunk *cnk) {

	/* Open_Text_Second_Pass() initializes lex_nl_cnt and lex_tk_cnt */
	if (!Open_Text_Third_Pass(cnk->ch_text)) {
		fprintf(stderr, ">>>> File %s disappeared <<<<\n",
			cnk->ch_text->tx_fname
		);
		return;
	}

	const struct position *pos_f = &cnk->ch_first;
	const struct position *pos_l = &cnk->ch_last;

	while (Next_Stream_Token_Obtained()) {
		if (Token_EQ(lex_token, End_Of_Line)) continue;
		if (pos_f->ps_tk_cnt == lex_tk_cnt-1
		    && pos_f->ps_nl_cnt != lex_nl_cnt
		) {
			fprintf(stderr, "fname= %s\n", cnk->ch_text->tx_fname);
			fprintf(stderr, "> pos_f->ps_tk_cnt= %d\n",
				pos_f->ps_tk_cnt);
			fprintf(stderr,
				"@pos_f->ps_tk_cnt= %d, lex_tk_cnt-1= %d\n",
				pos_f->ps_tk_cnt, lex_tk_cnt-1
				);
			fprintf(stderr,
				"%c pos_f->ps_nl_cnt= %d, lex_nl_cnt= %d\n",
				(pos_f->ps_nl_cnt == lex_nl_cnt ? '=' : 'X'),
				pos_f->ps_nl_cnt, lex_nl_cnt
				);
		}
		if (pos_l->ps_tk_cnt == lex_tk_cnt-1
		    && pos_l->ps_nl_cnt != lex_nl_cnt
		) {
			fprintf(stderr, "fname= %s\n", cnk->ch_text->tx_fname);
			fprintf(stderr, "> pos_l->ps_tk_cnt= %d\n",
				pos_l->ps_tk_cnt);
			fprintf(stderr,
				"@pos_l->ps_tk_cnt= %d, lex_tk_cnt-1= %d\n",
				pos_l->ps_tk_cnt, lex_tk_cnt-1
				);
			fprintf(stderr,
				"%c pos_l->ps_nl_cnt= %d, lex_nl_cnt= %d\n",
				(pos_l->ps_nl_cnt == lex_nl_cnt ? '=' : 'X'),
				pos_l->ps_nl_cnt, lex_nl_cnt
				);
		}
	}

	Close_Stream();
}

in print_run():

	improve_chunk(cnk0);
	improve_chunk(cnk1);