First cut at turning things into proper modern ANSI C

Hey! Real declarations!

basic.c

@@ -18,7 +18,7 @@
  * beginning of the current line.
  * Trivial.
  */
-gotobol(f, n)
+int gotobol(int f, int n)
 {
 	curwp->w_doto = 0;
 	return (TRUE);
@@ -30,8 +30,7 @@ gotobol(f, n)
  * location. Error if you try and move out of the buffer. Set the flag if the
  * line pointer for dot changes.
  */
-backchar(f, n)
-register int n;
+int backchar(int f, int n)
 {
 	register LINE *lp;
 
@@ -53,7 +52,7 @@ register int n;
 /*
  * Move the cursor to the end of the current line. Trivial. No errors.
  */
-gotoeol(f, n)
+int gotoeol(int f, int n)
 {
 	curwp->w_doto = llength(curwp->w_dotp);
 	return (TRUE);
@@ -65,8 +64,7 @@ gotoeol(f, n)
  * location, and move ".". Error if you try and move off the end of the
  * buffer. Set the flag if the line pointer for dot changes.
  */
-forwchar(f, n)
-register int n;
+int forwchar(int f, int n)
 {
 	if (n < 0)
 		return (backchar(f, -n));
@@ -83,10 +81,14 @@ register int n;
 	return (TRUE);
 }
 
-gotoline(f, n)
-{				/* move to a particular line.
-				   argument (n) must be a positive integer for
-				   this to actually do anything           */
+/*
+ * move to a particular line.
+ *
+ * argument (n) must be a positive integer for
+ * this to actually do anything
+ */
+int gotoline(int f, int n)
+{
 	register int status;	/* status return */
 	char arg[NSTRING];	/* buffer to hold argument */
 
@@ -114,7 +116,7 @@ gotoline(f, n)
  * considered to be hard motion; it really isn't if the original value of dot
  * is the same as the new value of dot. Normally bound to "M-<".
  */
-gotobob(f, n)
+int gotobob(int f, int n)
 {
 	curwp->w_dotp = lforw(curbp->b_linep);
 	curwp->w_doto = 0;
@@ -127,7 +129,7 @@ gotobob(f, n)
  * (ZJ). The standard screen code does most of the hard parts of update.
  * Bound to "M->".
  */
-gotoeob(f, n)
+int gotoeob(int f, int n)
 {
 	curwp->w_dotp = curbp->b_linep;
 	curwp->w_doto = 0;
@@ -141,7 +143,7 @@ gotoeob(f, n)
  * controls how the goal column is set. Bound to "C-N". No errors are
  * possible.
  */
-forwline(f, n)
+int forwline(int f, int n)
 {
 	register LINE *dlp;
 
@@ -178,7 +180,7 @@ forwline(f, n)
  * alternate. Figure out the new line and call "movedot" to perform the
  * motion. No errors are possible. Bound to "C-P".
  */
-backline(f, n)
+int backline(int f, int n)
 {
 	register LINE *dlp;
 
@@ -211,12 +213,14 @@ backline(f, n)
 }
 
 #if	WORDPRO
-gotobop(f, n)
-    /* go back to the beginning of the current paragraph
-       here we look for a <NL><NL> or <NL><TAB> or <NL><SPACE>
-       combination to delimit the beginning of a paragraph      */
-int f, n;			/* default Flag & Numeric argument */
-
+/*
+ * go back to the beginning of the current paragraph
+ * here we look for a <NL><NL> or <NL><TAB> or <NL><SPACE>
+ * combination to delimit the beginning of a paragraph
+ *
+ * int f, n;		default Flag & Numeric argument
+ */
+int gotobop(int f, int n)
 {
 	register int suc;	/* success of last backchar */
 
@@ -256,12 +260,14 @@ int f, n;			/* default Flag & Numeric argument */
 	return (TRUE);
 }
 
-gotoeop(f, n)
-    /* go forword to the end of the current paragraph
-       here we look for a <NL><NL> or <NL><TAB> or <NL><SPACE>
-       combination to delimit the beginning of a paragraph      */
-int f, n;			/* default Flag & Numeric argument */
-
+/*
+ * go forword to the end of the current paragraph
+ * here we look for a <NL><NL> or <NL><TAB> or <NL><SPACE>
+ * combination to delimit the beginning of a paragraph
+ *
+ * int f, n;		default Flag & Numeric argument
+ */
+int gotoeop(int f, int n)
 {
 	register int suc;	/* success of last backchar */
 
@@ -312,8 +318,7 @@ int f, n;			/* default Flag & Numeric argument */
  * column, return the best choice for the offset. The offset is returned.
  * Used by "C-N" and "C-P".
  */
-getgoal(dlp)
-register LINE *dlp;
+int getgoal(LINE *dlp)
 {
 	register int c;
 	register int col;
@@ -344,8 +349,7 @@ register LINE *dlp;
  * the overlap; this value is the default overlap value in ITS EMACS. Because
  * this zaps the top line in the display window, we have to do a hard update.
  */
-forwpage(f, n)
-register int n;
+int forwpage(int f, int n)
 {
 	register LINE *lp;
 
@@ -387,8 +391,7 @@ register int n;
  * EMACS manual. Bound to "M-V". We do a hard update for exactly the same
  * reason.
  */
-backpage(f, n)
-register int n;
+int backpage(int f, int n)
 {
 	register LINE *lp;
 
@@ -428,7 +431,7 @@ register int n;
  * Set the mark in the current window to the value of "." in the window. No
  * errors are possible. Bound to "M-.".
  */
-setmark(f, n)
+int setmark(int f, int n)
 {
 	curwp->w_markp = curwp->w_dotp;
 	curwp->w_marko = curwp->w_doto;
@@ -442,7 +445,7 @@ setmark(f, n)
  * that moves the mark about. The only possible error is "no mark". Bound to
  * "C-X C-X".
  */
-swapmark(f, n)
+int swapmark(int f, int n)
 {
 	register LINE *odotp;
 	register int odoto;