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ren: .br should flush the current partial word

This patch handles:
  abc\c
  .br
  def
Reported by Carsten Kunze <carsten.kunze@arcor.de>.

--- a/ren.c

+++ b/ren.c

@@ -376,9 +376,18 @@

 	ren_fmtpop(fmt);

 }

+/* pass the given word buffer to the current line buffer (cfmt) */

+static void ren_fmtword(struct wb *wb)

+{

+	while (fmt_word(cfmt, wb))

+		ren_fmtpop(cfmt);

+	wb_reset(wb);

+}

+

 /* output current line; returns 1 if triggered a trap */

 static int ren_br(void)

 {

+	ren_fmtword(cwb);

 	ren_fmtpopall(cfmt);

 	while (fmt_br(cfmt))

 		ren_fmtpop(cfmt);

@@ -963,9 +972,7 @@

 		/* add cwb (the current word) to cfmt */

 		if (c == ' ' || c == '\n') {

 			if (!wb_part(cwb)) {	/* not after a \c */

-				while (fmt_word(cfmt, cwb))

-					ren_fmtpop(cfmt);

-				wb_reset(cwb);

+				ren_fmtword(cwb);

 				if (c == '\n')

 					while (fmt_newline(cfmt))

 						ren_fmtpop(cfmt);