diff --git a/src/getchar.c b/src/getchar.c
index 0f81979..ff1b06b 100644
--- a/src/getchar.c
+++ b/src/getchar.c
@@ -291,14 +291,11 @@
     static void
 add_char_buff(buffheader_T *buf, int c)
 {
-#ifdef FEAT_MBYTE
     char_u	bytes[MB_MAXBYTES + 1];
     int		len;
     int		i;
-#endif
     char_u	temp[4];
 
-#ifdef FEAT_MBYTE
     if (IS_SPECIAL(c))
 	len = 1;
     else
@@ -307,7 +304,6 @@
     {
 	if (!IS_SPECIAL(c))
 	    c = bytes[i];
-#endif
 
 	if (IS_SPECIAL(c) || c == K_SPECIAL || c == NUL)
 	{
@@ -333,9 +329,7 @@
 	    temp[1] = NUL;
 	}
 	add_buff(buf, temp, -1L);
-#ifdef FEAT_MBYTE
     }
-#endif
 }
 
 /* First read ahead buffer. Used for translated commands. */
@@ -596,12 +590,10 @@
 	    break;
 
 	/* Handle a special or multibyte character. */
-#ifdef FEAT_MBYTE
 	if (has_mbyte)
 	    /* Handle composing chars separately. */
 	    c = mb_cptr2char_adv(&s);
 	else
-#endif
 	    c = *s++;
 	if (c < ' ' || c == DEL || (*s == NUL && (c == '0' || c == '^')))
 	    add_char_buff(&redobuff, Ctrl_V);
@@ -686,11 +678,7 @@
 	}
 	else
 	{
-#ifdef FEAT_MBYTE
 	    c = mb_ptr2char_adv(&s);
-#else
-	    c = *s++;
-#endif
 	    if (c == CAR || c == NL || c == ESC)
 		c = ' ';
 	    stuffcharReadbuff(c);
@@ -732,11 +720,9 @@
     static buffblock_T	*bp;
     static char_u	*p;
     int			c;
-#ifdef FEAT_MBYTE
     int			n;
     char_u		buf[MB_MAXBYTES + 1];
     int			i;
-#endif
 
     if (init)
     {
@@ -752,7 +738,6 @@
     if ((c = *p) != NUL)
     {
 	/* Reverse the conversion done by add_char_buff() */
-#ifdef FEAT_MBYTE
 	/* For a multi-byte character get all the bytes and return the
 	 * converted character. */
 	if (has_mbyte && (c != K_SPECIAL || p[1] == KS_SPECIAL))
@@ -760,7 +745,6 @@
 	else
 	    n = 1;
 	for (i = 0; ; ++i)
-#endif
 	{
 	    if (c == K_SPECIAL) /* special key or escaped K_SPECIAL */
 	    {
@@ -776,7 +760,6 @@
 		bp = bp->b_next;
 		p = bp->b_str;
 	    }
-#ifdef FEAT_MBYTE
 	    buf[i] = c;
 	    if (i == n - 1)	/* last byte of a character */
 	    {
@@ -787,7 +770,6 @@
 	    c = *p;
 	    if (c == NUL)	/* cannot happen? */
 		break;
-#endif
 	}
     }
 
@@ -1093,11 +1075,7 @@
     void
 ins_char_typebuf(int c)
 {
-#ifdef FEAT_MBYTE
     char_u	buf[MB_MAXBYTES + 1];
-#else
-    char_u	buf[4];
-#endif
     if (IS_SPECIAL(c))
     {
 	buf[0] = K_SPECIAL;
@@ -1106,14 +1084,7 @@
 	buf[3] = NUL;
     }
     else
-    {
-#ifdef FEAT_MBYTE
 	buf[(*mb_char2bytes)(c, buf)] = NUL;
-#else
-	buf[0] = c;
-	buf[1] = NUL;
-#endif
-    }
     (void)ins_typebuf(buf, KeyNoremap, 0, !KeyTyped, cmd_silent);
 }
 
@@ -1579,11 +1550,9 @@
 vgetc(void)
 {
     int		c, c2;
-#ifdef FEAT_MBYTE
     int		n;
     char_u	buf[MB_MAXBYTES + 1];
     int		i;
-#endif
 
 #ifdef FEAT_EVAL
     /* Do garbage collection when garbagecollect() was called previously and
@@ -1763,7 +1732,6 @@
 	    case K_XRIGHT:	c = K_RIGHT; break;
 	}
 
-#ifdef FEAT_MBYTE
 	/* For a multi-byte character get all the bytes and return the
 	 * converted character.
 	 * Note: This will loop until enough bytes are received!
@@ -1794,7 +1762,6 @@
 	    --no_mapping;
 	    c = (*mb_ptr2char)(buf);
 	}
-#endif
 
 	break;
       }
@@ -2212,7 +2179,6 @@
 					break;
 				}
 
-#ifdef FEAT_MBYTE
 				/* Don't allow mapping the first byte(s) of a
 				 * multi-byte char.  Happens when mapping
 				 * <M-a> and then changing 'encoding'. Beware
@@ -2225,7 +2191,6 @@
 					  && MB_BYTE2LEN(c1) > MB_PTR2LEN(p2))
 					mlen = 0;
 				}
-#endif
 				/*
 				 * Check an entry whether it matches.
 				 * - Full match: mlen == keylen
@@ -2685,38 +2650,29 @@
 					curwin->w_wcol = vcol;
 				    vcol += lbr_chartabsize(ptr, ptr + col,
 							       (colnr_T)vcol);
-#ifdef FEAT_MBYTE
 				    if (has_mbyte)
 					col += (*mb_ptr2len)(ptr + col);
 				    else
-#endif
 					++col;
 				}
 				curwin->w_wrow = curwin->w_cline_row
 					   + curwin->w_wcol / curwin->w_width;
 				curwin->w_wcol %= curwin->w_width;
 				curwin->w_wcol += curwin_col_off();
-#ifdef FEAT_MBYTE
 				col = 0;	/* no correction needed */
-#endif
 			    }
 			    else
 			    {
 				--curwin->w_wcol;
-#ifdef FEAT_MBYTE
 				col = curwin->w_cursor.col - 1;
-#endif
 			    }
 			}
 			else if (curwin->w_p_wrap && curwin->w_wrow)
 			{
 			    --curwin->w_wrow;
 			    curwin->w_wcol = curwin->w_width - 1;
-#ifdef FEAT_MBYTE
 			    col = curwin->w_cursor.col - 1;
-#endif
 			}
-#ifdef FEAT_MBYTE
 			if (has_mbyte && col > 0 && curwin->w_wcol > 0)
 			{
 			    /* Correct when the cursor is on the right halve
@@ -2726,7 +2682,6 @@
 			    if ((*mb_ptr2cells)(ptr + col) > 1)
 				--curwin->w_wcol;
 			}
-#endif
 		    }
 		    setcursor();
 		    out_flush();
@@ -3434,7 +3389,6 @@
 	     * Otherwise we won't be able to find the start of it in a
 	     * vi-compatible way.
 	     */
-#ifdef FEAT_MBYTE
 	    if (has_mbyte)
 	    {
 		int	first, last;
@@ -3458,9 +3412,7 @@
 		    goto theend;
 		}
 	    }
-	    else
-#endif
-		if (vim_iswordc(keys[len - 1]))	/* ends in keyword char */
+	    else if (vim_iswordc(keys[len - 1]))  // ends in keyword char
 		    for (n = 0; n < len - 2; ++n)
 			if (vim_iswordc(keys[n]) != vim_iswordc(keys[len - 2]))
 			{
@@ -4458,9 +4410,7 @@
 #ifdef FEAT_LOCALMAP
     mapblock_T	*mp2;
 #endif
-#ifdef FEAT_MBYTE
     int		clen = 0;	/* length in characters */
-#endif
     int		is_id = TRUE;
     int		vim_abbr;
 
@@ -4480,7 +4430,6 @@
     if (col == 0)				/* cannot be an abbr. */
 	return FALSE;
 
-#ifdef FEAT_MBYTE
     if (has_mbyte)
     {
 	char_u *p;
@@ -4508,7 +4457,6 @@
 	scol = (int)(p - ptr);
     }
     else
-#endif
     {
 	if (!vim_iswordc(ptr[col - 1]))
 	    vim_abbr = TRUE;			/* Vim added abbr. */
@@ -4601,7 +4549,6 @@
 		{
 		    if (c < ABBR_OFF && (c < ' ' || c > '~'))
 			tb[j++] = Ctrl_V;	/* special char needs CTRL-V */
-#ifdef FEAT_MBYTE
 		    if (has_mbyte)
 		    {
 			/* if ABBR_OFF has been added, remove it here */
@@ -4610,7 +4557,6 @@
 			j += (*mb_char2bytes)(c, tb + j);
 		    }
 		    else
-#endif
 			tb[j++] = c;
 		}
 		tb[j] = NUL;
@@ -4637,10 +4583,8 @@
 
 	    tb[0] = Ctrl_H;
 	    tb[1] = NUL;
-#ifdef FEAT_MBYTE
 	    if (has_mbyte)
 		len = clen;	/* Delete characters instead of bytes */
-#endif
 	    while (len-- > 0)		/* delete the from string */
 		(void)ins_typebuf(tb, 1, 0, TRUE, mp->m_silent);
 	    return TRUE;
@@ -4715,13 +4659,7 @@
     /* Need a buffer to hold up to three times as much.  Four in case of an
      * illegal utf-8 byte:
      * 0xc0 -> 0xc3 0x80 -> 0xc3 K_SPECIAL KS_SPECIAL KE_FILLER */
-    res = alloc((unsigned)(STRLEN(p) *
-#ifdef FEAT_MBYTE
-			4
-#else
-			3
-#endif
-			    ) + 1);
+    res = alloc((unsigned)(STRLEN(p) * 4) + 1);
     if (res != NULL)
     {
 	d = res;
@@ -5012,7 +4950,6 @@
 
     for ( ; *str != NUL; ++str)
     {
-#ifdef FEAT_MBYTE
 	char_u	*p;
 
 	/* Check for a multi-byte character, which may contain escaped
@@ -5026,7 +4963,6 @@
 	    --str;
 	    continue;
 	}
-#endif
 
 	c = *str;
 	/*