diff --git a/bin/ed/buf.c b/bin/ed/buf.c
index 1d74cb827f4a..7c92e5586269 100644
--- a/bin/ed/buf.c
+++ b/bin/ed/buf.c
@@ -49,13 +49,13 @@ static char sccsid[] = "@(#)buf.c	5.5 (Berkeley) 3/28/93";
 #include "ed.h"
 
 extern char errmsg[];
-extern line_t line0;
 
 FILE *sfp;				/* scratch file pointer */
 char *sfbuf = NULL;			/* scratch file input buffer */
 int sfbufsz = 0;			/* scratch file input buffer size */
 off_t sfseek;				/* scratch file position */
 int seek_write;				/* seek before writing */
+line_t line0;				/* initial node of line queue */
 
 /* gettxt: get a line of text from the scratch file; return pointer
    to the text */
@@ -248,3 +248,39 @@ quit(n)
 	}
 	exit(n);
 }
+
+
+unsigned char ctab[256];		/* character translation table */
+
+/* init_buf: open scratch buffer; initialize line queue */
+void
+init_buf()
+{
+	int i = 0;
+
+	if (sbopen() < 0)
+		quit(2);
+	requeue(&line0, &line0);
+	for (i = 0; i < 256; i++)
+		ctab[i] = i;
+}
+
+
+/* translit: translate characters in a string */
+char *
+translit(s, len, from, to)
+	char *s;
+	int len;
+	int from;
+	int to;
+{
+	static int i = 0;
+
+	unsigned char *us;
+
+	ctab[i] = i;			/* restore table to initial state */
+	ctab[i = from] = to;
+	for (us = (unsigned char *) s; len-- > 0; us++)
+		*us = ctab[*us];
+	return s;
+}
diff --git a/bin/ed/ed.h b/bin/ed/ed.h
index c854364dfb69..20d5cec9c8de 100644
--- a/bin/ed/ed.h
+++ b/bin/ed/ed.h
@@ -206,6 +206,7 @@ int desputc __P((int, FILE *));
 int docmd __P((int));
 void err __P((char *));
 char *ccl __P((char *));
+void clrmark __P((line_t *));
 void cvtkey __P((char *, char *));
 long doglob __P((int));
 void dohup __P((int));
@@ -223,6 +224,7 @@ int getkey __P((void));
 char *getlhs __P((int));
 int getline __P((void));
 int getlist __P((void));
+long getmark __P((int));
 long getnum __P((int));
 long getone __P((void));
 line_t *getlp __P((long));
@@ -236,12 +238,12 @@ line_t *lpdup __P((line_t *));
 void lpqueue __P((line_t *));
 void makekey __P((char *));
 char *makesub __P((int));
-char *translit __P((char *, int, int, int));
 int move __P((long, int));
 int oddesc __P((char *, char *));
 void onhup __P((int));
 void onintr __P((int));
 pattern_t *optpat __P((void));
+int putmark __P((int, line_t *));
 void putstr __P((char *, int, long, int));
 char *puttxt __P((char *));
 void quit __P((int));
@@ -253,6 +255,7 @@ int catsub __P((char *, regmatch_t *, int));
 int subst __P((pattern_t *, int));
 int tobinhex __P((int, int));
 int transfer __P((long));
+char *translit __P((char *, int, int, int));
 int undo __P((int));
 undo_t *upush __P((int, long, long));
 void ureset __P((void));