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changeset 9399:43b8570abbec v7.4.1981

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commit https://github.com/vim/vim/commit/ee2615af64fdcee87d8e4b13b65356e77fbd969b Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jul 2 18:25:34 2016 +0200 patch 7.4.1981 Problem: No testing for Farsi code. Solution: Add a minimal test. Clean up Farsi code.
author Christian Brabandt <cb@256bit.org>
date Sat, 02 Jul 2016 18:30:05 +0200
parents 8a735bf153d0
children 1ba77f62adc7
files src/Makefile src/charset.c src/farsi.c src/normal.c src/proto/main.pro src/testdir/Make_all.mak src/testdir/test_farsi.vim src/version.c
diffstat 8 files changed, 280 insertions(+), 293 deletions(-) [+]
line wrap: on
line diff
--- a/src/Makefile
+++ b/src/Makefile
@@ -2022,6 +2022,7 @@ test_arglist \
 	test_expand_dllpath \
 	test_expr \
 	test_expr_utf8 \
+	test_farsi \
 	test_feedkeys \
 	test_file_perm \
 	test_fnamemodify \
--- a/src/charset.c
+++ b/src/charset.c
@@ -571,7 +571,7 @@ transchar(int c)
 		    (c >= ' ' && c <= '~')
 #endif
 #ifdef FEAT_FKMAP
-			|| F_ischar(c)
+			|| (p_altkeymap && F_ischar(c))
 #endif
 		)) || (c < 256 && vim_isprintc_strict(c)))
     {
--- a/src/farsi.c
+++ b/src/farsi.c
@@ -35,7 +35,7 @@ static int toF_ending(int c);
 static void lrswapbuf(char_u *buf, int len);
 
 /*
-** Convert the given Farsi character into a _X or _X_ type
+ * Convert the given Farsi character into a _X or _X_ type
 */
     static int
 toF_Xor_X_(int c)
@@ -44,61 +44,35 @@ toF_Xor_X_(int c)
 
     switch (c)
     {
-	case BE:
-		return _BE;
-	case PE:
-		return _PE;
-	case TE:
-		return _TE;
-	case SE:
-		return _SE;
-	case JIM:
-		return _JIM;
-	case CHE:
-		return _CHE;
-	case HE_J:
-		return _HE_J;
-	case XE:
-		return _XE;
-	case SIN:
-		return _SIN;
-	case SHIN:
-		return _SHIN;
-	case SAD:
-		return _SAD;
-	case ZAD:
-		return _ZAD;
-	case AYN:
-		return _AYN;
-	case AYN_:
-		return _AYN_;
-	case GHAYN:
-		return _GHAYN;
-	case GHAYN_:
-		return _GHAYN_;
-	case FE:
-		return _FE;
-	case GHAF:
-		return _GHAF;
-	case KAF:
-		return _KAF;
-	case GAF:
-		return _GAF;
-	case LAM:
-		return _LAM;
-	case MIM:
-		return _MIM;
-	case NOON:
-		return _NOON;
+	case BE: return _BE;
+	case PE: return _PE;
+	case TE: return _TE;
+	case SE: return _SE;
+	case JIM: return _JIM;
+	case CHE: return _CHE;
+	case HE_J: return _HE_J;
+	case XE: return _XE;
+	case SIN: return _SIN;
+	case SHIN: return _SHIN;
+	case SAD: return _SAD;
+	case ZAD: return _ZAD;
+	case AYN: return _AYN;
+	case AYN_: return _AYN_;
+	case GHAYN: return _GHAYN;
+	case GHAYN_: return _GHAYN_;
+	case FE: return _FE;
+	case GHAF: return _GHAF;
+	case KAF: return _KAF;
+	case GAF: return _GAF;
+	case LAM: return _LAM;
+	case MIM: return _MIM;
+	case NOON: return _NOON;
 	case YE:
-	case YE_:
-		return _YE;
+	case YE_: return _YE;
 	case YEE:
-	case YEE_:
-		return _YEE;
+	case YEE_: return _YEE;
 	case IE:
-	case IE_:
-		return _IE;
+	case IE_: return _IE;
 	case F_HE:
 		tempc = _HE;
 
@@ -128,86 +102,58 @@ toF_Xor_X_(int c)
 }
 
 /*
-** Convert the given Farsi character into Farsi capital character .
+ * Convert the given Farsi character into Farsi capital character.
 */
-    int
-toF_TyA(int c )
+    static int
+toF_TyA(int c)
 {
     switch (c)
     {
-	case ALEF_:
-		return ALEF;
-	case ALEF_U_H_:
-		return ALEF_U_H;
-	case _BE:
-		return BE;
-	case _PE:
-		return PE;
-	case _TE:
-		return TE;
-	case _SE:
-		return SE;
-	case _JIM:
-		return JIM;
-	case _CHE:
-		return CHE;
-	case _HE_J:
-		return HE_J;
-	case _XE:
-		return XE;
-	case _SIN:
-		return SIN;
-	case _SHIN:
-		return SHIN;
-	case _SAD:
-		return SAD;
-	case _ZAD:
-		return ZAD;
+	case ALEF_: return ALEF;
+	case ALEF_U_H_: return ALEF_U_H;
+	case _BE: return BE;
+	case _PE: return PE;
+	case _TE: return TE;
+	case _SE: return SE;
+	case _JIM: return JIM;
+	case _CHE: return CHE;
+	case _HE_J: return HE_J;
+	case _XE: return XE;
+	case _SIN: return SIN;
+	case _SHIN: return SHIN;
+	case _SAD: return SAD;
+	case _ZAD: return ZAD;
 	case _AYN:
 	case AYN_:
-	case _AYN_:
-		return AYN;
+	case _AYN_: return AYN;
 	case _GHAYN:
 	case GHAYN_:
-	case _GHAYN_:
-		return GHAYN;
-	case _FE:
-		return FE;
-	case _GHAF:
-		return GHAF;
-/* I am not sure what it is !!!	    case _KAF_H: */
-	case _KAF:
-		return KAF;
-	case _GAF:
-		return GAF;
-	case _LAM:
-		return LAM;
-	case _MIM:
-		return MIM;
-	case _NOON:
-		return NOON;
+	case _GHAYN_: return GHAYN;
+	case _FE: return FE;
+	case _GHAF: return GHAF;
+	/* I am not sure what it is !!!	    case _KAF_H: */
+	case _KAF: return KAF;
+	case _GAF: return GAF;
+	case _LAM: return LAM;
+	case _MIM: return MIM;
+	case _NOON: return NOON;
 	case _YE:
-	case YE_:
-		return YE;
+	case YE_: return YE;
 	case _YEE:
-	case YEE_:
-		return YEE;
-	case TEE_:
-		return TEE;
+	case YEE_: return YEE;
+	case TEE_: return TEE;
 	case _IE:
-	case IE_:
-		return IE;
+	case IE_: return IE;
 	case _HE:
-	case _HE_:
-		return F_HE;
+	case _HE_: return F_HE;
     }
     return c;
 }
 
 /*
-** Is the character under the cursor+offset in the given buffer a join type.
-** That is a character that is combined with the others.
-** Note: the offset is used only for command line buffer.
+ * Is the character under the cursor+offset in the given buffer a join type.
+ * That is a character that is combined with the others.
+ * Note: the offset is used only for command line buffer.
 */
     static int
 F_is_TyB_TyC_TyD(int src, int offset)
@@ -258,7 +204,7 @@ F_is_TyB_TyC_TyD(int src, int offset)
 }
 
 /*
-** Is the Farsi character one of the terminating only type.
+ * Is the Farsi character one of the terminating only type.
 */
     static int
 F_is_TyE(int c)
@@ -281,7 +227,7 @@ F_is_TyE(int c)
 }
 
 /*
-** Is the Farsi character one of the none leading type.
+ * Is the Farsi character one of the none leading type.
 */
     static int
 F_is_TyC_TyD(int c)
@@ -305,7 +251,7 @@ F_is_TyC_TyD(int c)
 }
 
 /*
-** Convert a none leading Farsi char into a leading type.
+ * Convert a none leading Farsi char into a leading type.
 */
     static int
 toF_TyB(int c)
@@ -313,7 +259,7 @@ toF_TyB(int c)
     switch (c)
     {
 	case ALEF_:	return ALEF;
-	case ALEF_U_H_:	    return ALEF_U_H;
+	case ALEF_U_H_:	return ALEF_U_H;
 	case _AYN_:	return _AYN;
 	case AYN_:	return AYN;	/* exception - there are many of them */
 	case _GHAYN_:	return _GHAYN;
@@ -328,7 +274,7 @@ toF_TyB(int c)
 }
 
 /*
-** Overwrite the current redo and cursor characters + left adjust
+ * Overwrite the current redo and cursor characters + left adjust.
 */
     static void
 put_curr_and_l_to_X(int c)
@@ -373,7 +319,7 @@ put_and_redo(int c)
 }
 
 /*
-** Change the char. under the cursor to a X_ or X type
+ * Change the char. under the cursor to a X_ or X type
 */
     static void
 chg_c_toX_orX(void)
@@ -497,7 +443,7 @@ chg_c_toX_orX(void)
 }
 
 /*
-** Change the char. under the cursor to a _X_ or X_ type
+ * Change the char. under the cursor to a _X_ or X_ type
 */
 
     static void
@@ -549,7 +495,7 @@ chg_c_to_X_orX_(void)
 }
 
 /*
-** Change the char. under the cursor to a _X_ or _X type
+ * Change the char. under the cursor to a _X_ or _X type
 */
     static void
 chg_c_to_X_or_X (void)
@@ -580,10 +526,10 @@ chg_c_to_X_or_X (void)
 }
 
 /*
-** Change the character left to the cursor to a _X_ or X_ type
+ * Change the character left to the cursor to a _X_ or X_ type
 */
     static void
-chg_l_to_X_orX_ (void)
+chg_l_to_X_orX_(void)
 {
     int	tempc;
 
@@ -648,7 +594,7 @@ chg_l_to_X_orX_ (void)
 }
 
 /*
-** Change the character left to the cursor to a X or _X type
+ * Change the character left to the cursor to a X or _X type
 */
 
     static void
@@ -717,7 +663,7 @@ chg_l_toXor_X (void)
 }
 
 /*
-** Change the character right to the cursor to a _X or _X_ type
+ * Change the character right to the cursor to a _X or _X_ type
 */
 
     static void
@@ -742,7 +688,7 @@ chg_r_to_Xor_X_(void)
 }
 
 /*
-** Map Farsi keyboard when in fkmap mode.
+ * Map Farsi keyboard when in fkmap mode.
 */
 
     int
@@ -899,8 +845,8 @@ fkmap(int c)
 	    if (p_ri && c == NL && curwin->w_cursor.col)
 	    {
 		/*
-		** If the char before the cursor is _X_ or X_ do not change
-		** the one under the cursor with X type.
+		 * If the char before the cursor is _X_ or X_ do not change
+		 * the one under the cursor with X type.
 		*/
 
 		dec_cursor();
@@ -914,8 +860,7 @@ fkmap(int c)
 		inc_cursor();
 	    }
 
-	    if (!p_ri)
-	    if (!curwin->w_cursor.col)
+	    if (!p_ri && !curwin->w_cursor.col)
 	    {
 		switch (c)
 		{
@@ -1154,43 +1099,42 @@ fkmap(int c)
 
 	case 'a':
 		tempc = _SHIN;
-	    break;
+		break;
 	case 'A':
 		tempc = WAW_H;
-	    break;
+		break;
 	case 'b':
 		tempc = ZAL;
-	    break;
+		break;
 	case 'c':
 		tempc = ZE;
-	    break;
+		break;
 	case 'C':
 		tempc = JE;
-	    break;
+		break;
 	case 'd':
 		tempc = _YE;
-	    break;
+		break;
 	case 'D':
 		tempc = _YEE;
-	    break;
+		break;
 	case 'e':
 		tempc = _SE;
-	    break;
+		break;
 	case 'f':
 		tempc = _BE;
-	    break;
+		break;
 	case 'g':
 		tempc = _LAM;
-	    break;
+		break;
 	case 'G':
 	    if (!curwin->w_cursor.col  &&  STRLEN(ml_get_curline()))
-		{
+	    {
 
 		if (gchar_cursor() == _LAM)
 		    chg_c_toX_orX ();
-		else
-		    if (p_ri)
-			chg_c_to_X_or_X ();
+		else if (p_ri)
+		    chg_c_to_X_or_X ();
 	    }
 
 	    if (!p_ri)
@@ -1204,16 +1148,15 @@ fkmap(int c)
 	    {
 		chg_c_toX_orX ();
 		chg_l_toXor_X ();
-		    tempc = ALEF_U_H;
+		tempc = ALEF_U_H;
+	    }
+	    else if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR))
+	    {
+		tempc = ALEF_U_H_;
+		chg_l_toXor_X ();
 	    }
 	    else
-		if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR))
-		{
-			tempc = ALEF_U_H_;
-		    chg_l_toXor_X ();
-		}
-		else
-			tempc = ALEF_U_H;
+		tempc = ALEF_U_H;
 
 	    if (!p_ri)
 		inc_cursor();
@@ -1249,11 +1192,11 @@ fkmap(int c)
 	    {
 		if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR))
 		{
-			tempc = ALEF_;
+		    tempc = ALEF_;
 		    chg_l_toXor_X ();
 		}
 		else
-			tempc = ALEF;
+		    tempc = ALEF;
 	    }
 
 	    if (!p_ri)
@@ -1261,8 +1204,8 @@ fkmap(int c)
 
 	    return tempc;
 	case 'i':
-	    if (!curwin->w_cursor.col  &&  STRLEN(ml_get_curline()))
-		{
+	    if (!curwin->w_cursor.col && STRLEN(ml_get_curline()))
+	    {
 		if (!p_ri && !F_is_TyE(tempc))
 		    chg_c_to_X_orX_ ();
 		if (p_ri)
@@ -1277,9 +1220,9 @@ fkmap(int c)
 		dec_cursor();
 
 	    if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR))
-		    tempc = _HE_;
+		tempc = _HE_;
 	    else
-		    tempc = _HE;
+		tempc = _HE;
 
 	    if (!p_ri)
 		inc_cursor();
@@ -1289,7 +1232,7 @@ fkmap(int c)
 	    break;
 	case 'J':
 	    if (!curwin->w_cursor.col  &&  STRLEN(ml_get_curline()))
-		{
+	    {
 		if (p_ri)
 		    chg_c_to_X_or_X ();
 
@@ -1304,11 +1247,11 @@ fkmap(int c)
 
 	    if (F_is_TyB_TyC_TyD(SRC_EDT, AT_CURSOR))
 	    {
-		    tempc = TEE_;
+		tempc = TEE_;
 		chg_l_toXor_X ();
 	    }
 	    else
-			tempc = TEE;
+		tempc = TEE;
 
 	    if (!p_ri)
 		inc_cursor();
@@ -1385,7 +1328,7 @@ fkmap(int c)
 	    break;
 	case 'y':
 	    if (!curwin->w_cursor.col  &&  STRLEN(ml_get_curline()))
-		{
+	    {
 		if (!p_ri && !F_is_TyE(tempc))
 		    chg_c_to_X_orX_ ();
 		if (p_ri)
@@ -1434,7 +1377,7 @@ fkmap(int c)
     if ((F_isalpha(tempc) || F_isdigit(tempc)))
     {
 	if (!curwin->w_cursor.col  &&  STRLEN(ml_get_curline()))
-	    {
+	{
 	    if (!p_ri && !F_is_TyE(tempc))
 		chg_c_to_X_orX_ ();
 	    if (p_ri)
@@ -1461,7 +1404,7 @@ fkmap(int c)
 }
 
 /*
-** Convert a none leading Farsi char into a leading type.
+ * Convert a none leading Farsi char into a leading type.
 */
     static int
 toF_leading(int c)
@@ -1515,7 +1458,7 @@ toF_leading(int c)
 }
 
 /*
-** Convert a given Farsi char into right joining type.
+ * Convert a given Farsi char into right joining type.
 */
     static int
 toF_Rjoin(int c)
@@ -1571,7 +1514,7 @@ toF_Rjoin(int c)
 }
 
 /*
-** Can a given Farsi character join via its left edj.
+ * Can a given Farsi character join via its left edj.
 */
     static int
 canF_Ljoin(int c)
@@ -1645,7 +1588,7 @@ canF_Ljoin(int c)
 }
 
 /*
-** Can a given Farsi character join via its right edj.
+ * Can a given Farsi character join via its right edj.
 */
     static int
 canF_Rjoin(int c)
@@ -1673,7 +1616,7 @@ canF_Rjoin(int c)
 }
 
 /*
-** is a given Farsi character a terminating type.
+ * is a given Farsi character a terminating type.
 */
     static int
 F_isterm(int c)
@@ -1700,86 +1643,54 @@ F_isterm(int c)
 }
 
 /*
-** Convert the given Farsi character into a ending type .
+ * Convert the given Farsi character into a ending type .
 */
     static int
 toF_ending(int c)
 {
-
     switch (c)
     {
-	case _BE:
-		return BE;
-	case _PE:
-		return PE;
-	case _TE:
-		return TE;
-	case _SE:
-		return SE;
-	case _JIM:
-		return JIM;
-	case _CHE:
-		return CHE;
-	case _HE_J:
-		return HE_J;
-	case _XE:
-		return XE;
-	case _SIN:
-		return SIN;
-	case _SHIN:
-		return SHIN;
-	case _SAD:
-		return SAD;
-	case _ZAD:
-		return ZAD;
-	case _AYN:
-		return AYN;
-	case _AYN_:
-		return AYN_;
-	case _GHAYN:
-		return GHAYN;
-	case _GHAYN_:
-		return GHAYN_;
-	case _FE:
-		return FE;
-	case _GHAF:
-		return GHAF;
+	case _BE: return BE;
+	case _PE: return PE;
+	case _TE: return TE;
+	case _SE: return SE;
+	case _JIM: return JIM;
+	case _CHE: return CHE;
+	case _HE_J: return HE_J;
+	case _XE: return XE;
+	case _SIN: return SIN;
+	case _SHIN: return SHIN;
+	case _SAD: return SAD;
+	case _ZAD: return ZAD;
+	case _AYN: return AYN;
+	case _AYN_: return AYN_;
+	case _GHAYN: return GHAYN;
+	case _GHAYN_: return GHAYN_;
+	case _FE: return FE;
+	case _GHAF: return GHAF;
 	case _KAF_H:
-	case _KAF:
-		return KAF;
-	case _GAF:
-		return GAF;
-	case _LAM:
-		return LAM;
-	case _MIM:
-		return MIM;
-	case _NOON:
-		return NOON;
-	case _YE:
-		return YE_;
-	case YE_:
-		return YE;
-	case _YEE:
-		return YEE_;
-	case YEE_:
-		return YEE;
-	case TEE:
-		return TEE_;
-	case _IE:
-		return IE_;
-	case IE_:
-		return IE;
+	case _KAF: return KAF;
+	case _GAF: return GAF;
+	case _LAM: return LAM;
+	case _MIM: return MIM;
+	case _NOON: return NOON;
+	case _YE: return YE_;
+	case YE_: return YE;
+	case _YEE: return YEE_;
+	case YEE_: return YEE;
+	case TEE: return TEE_;
+	case _IE: return IE_;
+	case IE_: return IE;
 	case _HE:
-	case _HE_:
-		return F_HE;
+	case _HE_: return F_HE;
     }
     return c;
 }
 
 /*
-** Convert the Farsi 3342 standard into Farsi VIM.
+ * Convert the Farsi 3342 standard into Farsi VIM.
 */
-    void
+    static void
 conv_to_pvim(void)
 {
     char_u	*ptr;
@@ -1791,7 +1702,7 @@ conv_to_pvim(void)
 
 	llen = (int)STRLEN(ptr);
 
-	for ( i = 0; i < llen-1; i++)
+	for (i = 0; i < llen-1; i++)
 	{
 	    if (canF_Ljoin(ptr[i]) && canF_Rjoin(ptr[i+1]))
 	    {
@@ -1817,8 +1728,8 @@ conv_to_pvim(void)
      * Following lines contains Farsi encoded character.
      */
 
-    do_cmdline_cmd((char_u *)"%s/\202\231/\232/g");
-    do_cmdline_cmd((char_u *)"%s/\201\231/\370\334/g");
+    do_cmdline_cmd((char_u *)"%s/\202\231/\232/ge");
+    do_cmdline_cmd((char_u *)"%s/\201\231/\370\334/ge");
 
     /* Assume the screen has been messed up: clear it and redraw. */
     redraw_later(CLEAR);
@@ -1828,7 +1739,7 @@ conv_to_pvim(void)
 /*
  * Convert the Farsi VIM into Farsi 3342 standard.
  */
-    void
+    static void
 conv_to_pstd(void)
 {
     char_u	*ptr;
@@ -1837,20 +1748,15 @@ conv_to_pstd(void)
     /*
      * Following line contains Farsi encoded character.
      */
-
-    do_cmdline_cmd((char_u *)"%s/\232/\202\231/g");
+    do_cmdline_cmd((char_u *)"%s/\232/\202\231/ge");
 
     for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum)
     {
 	ptr = ml_get((linenr_T)lnum);
-
 	llen = (int)STRLEN(ptr);
 
-	for ( i = 0; i < llen; i++)
-	{
+	for (i = 0; i < llen; i++)
 	    ptr[i] = toF_TyA(ptr[i]);
-
-	}
     }
 
     /* Assume the screen has been messed up: clear it and redraw. */
@@ -2148,7 +2054,7 @@ cmdl_fkmap(int c)
 	case 'f':   return _BE;
 	case 'g':   return _LAM;
 	case 'G':
-		    if (cmd_gchar(AT_CURSOR) == _LAM )
+		if (cmd_gchar(AT_CURSOR) == _LAM)
 		{
 		    cmd_pchar(LAM, AT_CURSOR);
 			    return ALEF_U_H;
@@ -2159,7 +2065,7 @@ cmdl_fkmap(int c)
 		else
 			return ALEF_U_H;
 	case 'h':
-		    if (cmd_gchar(AT_CURSOR) == _LAM )
+		if (cmd_gchar(AT_CURSOR) == _LAM)
 		{
 		    cmd_pchar(LA, AT_CURSOR);
 		    redrawcmdline();
@@ -2215,9 +2121,9 @@ cmdl_fkmap(int c)
 	case ',':   return WAW;
 	case '[':   return _JIM;
 	case ']':   return _CHE;
-	}
+    }
 
-	return c;
+    return c;
 }
 
 /*
@@ -2226,7 +2132,7 @@ cmdl_fkmap(int c)
     int
 F_isalpha(int c)
 {
-    return (( c >= TEE_ && c <= _YE)
+    return ((c >= TEE_ && c <= _YE)
 	    || (c >= ALEF_A && c <= YE)
 	    || (c >= _IE && c <= YE_));
 }
@@ -2246,45 +2152,40 @@ F_isdigit(int c)
     int
 F_ischar(int c)
 {
- return (c >= TEE_ && c <= YE_);
+    return (c >= TEE_ && c <= YE_);
 }
 
     void
-farsi_fkey(
-    cmdarg_T	*cap)
+farsi_f8(cmdarg_T *cap UNUSED)
 {
-    int		c = cap->cmdchar;
-
-    if (c == K_F8)
+    if (p_altkeymap)
     {
-	if (p_altkeymap)
+	if (curwin->w_farsi & W_R_L)
 	{
-	    if (curwin->w_farsi & W_R_L)
-	    {
-		p_fkmap = 0;
-		do_cmdline_cmd((char_u *)"set norl");
-		MSG("");
-	    }
-	    else
-	    {
-		p_fkmap = 1;
-		do_cmdline_cmd((char_u *)"set rl");
-		MSG("");
-	    }
+	    p_fkmap = 0;
+	    do_cmdline_cmd((char_u *)"set norl");
+	    MSG("");
+	}
+	else
+	{
+	    p_fkmap = 1;
+	    do_cmdline_cmd((char_u *)"set rl");
+	    MSG("");
+	}
 
-	    curwin->w_farsi = curwin->w_farsi ^ W_R_L;
-	}
-    }
-
-    if (c == K_F9)
-    {
-	if (p_altkeymap && curwin->w_p_rl)
-	{
-	    curwin->w_farsi = curwin->w_farsi ^ W_CONV;
-	    if (curwin->w_farsi & W_CONV)
-		conv_to_pvim();
-	    else
-		conv_to_pstd();
-	}
+	curwin->w_farsi = curwin->w_farsi ^ W_R_L;
     }
 }
+
+    void
+farsi_f9(cmdarg_T *cap UNUSED)
+{
+    if (p_altkeymap && curwin->w_p_rl)
+    {
+	curwin->w_farsi = curwin->w_farsi ^ W_CONV;
+	if (curwin->w_farsi & W_CONV)
+	    conv_to_pvim();
+	else
+	    conv_to_pstd();
+    }
+}
--- a/src/normal.c
+++ b/src/normal.c
@@ -414,8 +414,8 @@ static const struct nv_cmd
     {K_TABMENU, nv_tabmenu,	0,			0},
 #endif
 #ifdef FEAT_FKMAP
-    {K_F8,	farsi_fkey,	0,			0},
-    {K_F9,	farsi_fkey,	0,			0},
+    {K_F8,	farsi_f8,	0,			0},
+    {K_F9,	farsi_f9,	0,			0},
 #endif
 #ifdef FEAT_NETBEANS_INTG
     {K_F21,	nv_nbcmd,	NV_NCH_ALW,		0},
--- a/src/proto/main.pro
+++ b/src/proto/main.pro
@@ -10,10 +10,7 @@ void time_msg(char *mesg, void *tv_start
 void server_to_input_buf(char_u *str);
 char_u *eval_client_expr_to_string(char_u *expr);
 char_u *serverConvert(char_u *client_enc, char_u *data, char_u **tofree);
-int toF_TyA(int c);
 int fkmap(int c);
-void conv_to_pvim(void);
-void conv_to_pstd(void);
 char_u *lrswap(char_u *ibuf);
 char_u *lrFswap(char_u *cmdbuf, int len);
 char_u *lrF_sub(char_u *ibuf);
@@ -21,6 +18,7 @@ int cmdl_fkmap(int c);
 int F_isalpha(int c);
 int F_isdigit(int c);
 int F_ischar(int c);
-void farsi_fkey(cmdarg_T *cap);
+void farsi_f8(cmdarg_T *cap);
+void farsi_f9(cmdarg_T *cap);
 int arabic_shape(int c, int *ccp, int *c1p, int prev_c, int prev_c1, int next_c);
 /* vim: set ft=c : */
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -168,6 +168,7 @@ NEW_TESTS = test_arglist.res \
 	    test_cdo.res \
 	    test_channel.res \
 	    test_cmdline.res \
+	    test_farsi.res \
 	    test_hardcopy.res \
 	    test_history.res \
 	    test_increment.res \
new file mode 100644
--- /dev/null
+++ b/src/testdir/test_farsi.vim
@@ -0,0 +1,84 @@
+" Simplistic testing of Farsi mode.
+
+if !has('farsi')
+  finish
+endif
+" Farsi uses a single byte encoding.
+set enc=latin1
+
+func Test_farsi_toggle()
+  new
+
+  set altkeymap
+  call assert_equal(0, &fkmap)
+  call assert_equal(0, &rl)
+  call feedkeys("\<F8>", 'x')
+  call assert_equal(1, &fkmap)
+  call assert_equal(1, &rl)
+  call feedkeys("\<F8>", 'x')
+  call assert_equal(0, &fkmap)
+  call assert_equal(0, &rl)
+
+  set rl
+  " conversion from Farsi 3342 to Farsi VIM.
+  call setline(1, join(map(range(0x80, 0xff), 'nr2char(v:val)'), ''))
+  call feedkeys("\<F9>", 'x')
+  let exp = [0xfc, 0xf8, 0xc1, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
+	   \ 0xc8, 0xc9, 0xca, 0xd0, 0xd1, 0xd2, 0xd3, 0xd6,
+	   \ 0xd6, 0xd6, 0xd7, 0xd7, 0xd7, 0xd8, 0xd9, 0xda,
+	   \ 0xdb, 0xdc, 0xdc, 0xc1, 0xdd, 0xde, 0xe0, 0xe0,
+	   \ 0xe1, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6,
+	   \ 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae,
+	   \ 0xaf, 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
+	   \ 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe,
+	   \ 0xbf, 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6,
+	   \ 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce,
+	   \ 0xcf, 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6,
+	   \ 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde,
+	   \ 0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6,
+	   \ 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xfb, 0xfb, 0xfe,
+	   \ 0xfe, 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6,
+	   \ 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xe1,
+           \ ]
+  call assert_equal(join(map(exp, 'nr2char(v:val)'), ''), getline(1))
+
+  " conversion from Farsi VIM to Farsi 3342.
+  call setline(1, join(map(range(0x80, 0xff), 'nr2char(v:val)'), ''))
+  call feedkeys("\<F9>", 'x')
+  let exp = [0xfc, 0xf8, 0xc1, 0x83, 0x84, 0x85, 0x86, 0x87,
+	   \ 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x90,
+	   \ 0x90, 0x90, 0x92, 0x93, 0x93, 0x95, 0x96, 0x97,
+	   \ 0x98, 0xdc, 0x9a, 0x9b, 0x9c, 0x9e, 0x9e, 0xff,
+	   \ 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+	   \ 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
+	   \ 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
+	   \ 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
+	   \ 0xc0, 0xc1, 0xc2, 0x83, 0x84, 0x85, 0x86, 0x87,
+	   \ 0x88, 0x89, 0x8a, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
+	   \ 0x8b, 0x8c, 0x8d, 0x8e, 0xd4, 0xd5, 0x90, 0x93,
+	   \ 0x95, 0x96, 0x97, 0x98, 0x99, 0x9b, 0x9c, 0xdf,
+	   \ 0x9d, 0xff, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+	   \ 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xec, 0xee, 0xef,
+	   \ 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+	   \ 0xf8, 0xf9, 0xfa, 0xec, 0x80, 0xfd, 0xee, 0xff,
+           \ ]
+  call assert_equal(join(map(exp, 'nr2char(v:val)'), ''), getline(1))
+
+  bwipe!
+endfunc
+
+func Test_farsi_map()
+  new
+
+  set altkeymap
+  set rl
+  " RHS of mapping is reversed.
+  imap xyz abc
+  call feedkeys("axyz\<Esc>", 'tx')
+  call assert_equal('cba', getline(1))
+
+  set norl
+  iunmap xyz
+  set noaltkeymap
+  bwipe!
+endfunc
--- a/src/version.c
+++ b/src/version.c
@@ -759,6 +759,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1981,
+/**/
     1980,
 /**/
     1979,