patch 7.4.2236

Problem:    The 'langnoremap' option leads to double negatives.  And it does
            not work for the last character of a mapping.
Solution:   Add 'langremap' with the opposite value.  Keep 'langnoremap' for
            backwards compatibility.  Make it work for the last character of a
            mapping.  Make the test work.

6 files changed, 84 insertions, 21 deletions

diff --git a/runtime/defaults.vim b/runtime/defaults.vim
index 45a5393d3..023d64020 100644
--- a/runtime/defaults.vim
+++ b/runtime/defaults.vim
@@ -1,7 +1,7 @@
 " The default vimrc file.
 "
 " Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last change:	2016 Aug 20
+" Last change:	2016 Aug 21
 "
 " This is loaded if no vimrc file was found.
 " Except when Vim is run with "-u NONE" or "-C".
@@ -107,9 +107,9 @@ if !exists(":DiffOrig")
 		  \ | wincmd p | diffthis
 endif
 
-if has('langmap') && exists('+langnoremap')
+if has('langmap') && exists('+langremap')
   " Prevent that the langmap option applies to characters that result from a
-  " mapping.  If unset (default), this may break plugins (but it's backward
+  " mapping.  If set (default), this may break plugins (but it's backward
   " compatible).
-  set langnoremap
+  set nolangremap
 endif
diff --git a/src/macros.h b/src/macros.h
index 28f43a362..aec142559 100644
--- a/src/macros.h
+++ b/src/macros.h
@@ -135,7 +135,7 @@
     do { \
 	if (*p_langmap \
 		&& (condition) \
-		&& (!p_lnr || (p_lnr && typebuf_maplen() == 0)) \
+		&& (p_lrm || (!p_lrm && KeyTyped)) \
 		&& !KeyStuffed \
 		&& (c) >= 0) \
 	{ \
@@ -150,7 +150,7 @@
     do { \
 	if (*p_langmap \
 		&& (condition) \
-		&& (!p_lnr || (p_lnr && typebuf_maplen() == 0)) \
+		&& (p_lrm || (!p_lrm && KeyTyped)) \
 		&& !KeyStuffed \
 		&& (c) >= 0 && (c) < 256) \
 	    c = langmap_mapchar[c]; \
diff --git a/src/option.c b/src/option.c
index 1a5cd8e4f..9f1aaf1d1 100644
--- a/src/option.c
+++ b/src/option.c
@@ -1705,6 +1705,13 @@ static struct vimoption options[] =
 			    (char_u *)NULL, PV_NONE,
 #endif
 			    {(char_u *)FALSE, (char_u *)0L} SCRIPTID_INIT},
+    {"langremap",  "lrm",   P_BOOL|P_VI_DEF,
+#ifdef FEAT_LANGMAP
+			    (char_u *)&p_lrm, PV_NONE,
+#else
+			    (char_u *)NULL, PV_NONE,
+#endif
+			    {(char_u *)FALSE, (char_u *)0L} SCRIPTID_INIT},
     {"laststatus",  "ls",   P_NUM|P_VI_DEF|P_RALL,
 #ifdef FEAT_WINDOWS
 			    (char_u *)&p_ls, PV_NONE,
@@ -7894,6 +7901,15 @@ set_bool_option(
 	compatible_set();
     }
 
+#ifdef FEAT_LANGMAP
+    if ((int *)varp == &p_lrm)
+	/* 'langremap' -> !'langnoremap' */
+	p_lnr = !p_lrm;
+    else if ((int *)varp == &p_lnr)
+	/* 'langnoremap' -> !'langremap' */
+	p_lrm = !p_lnr;
+#endif
+
 #ifdef FEAT_PERSISTENT_UNDO
     /* 'undofile' */
     else if ((int *)varp == &curbuf->b_p_udf || (int *)varp == &p_udf)
diff --git a/src/option.h b/src/option.h
index c86550fb1..9a5570c2a 100644
--- a/src/option.h
+++ b/src/option.h
@@ -604,6 +604,7 @@ EXTERN char_u	*p_km;		/* 'keymodel' */
 #ifdef FEAT_LANGMAP
 EXTERN char_u	*p_langmap;	/* 'langmap'*/
 EXTERN int	p_lnr;		/* 'langnoremap' */
+EXTERN int	p_lrm;		/* 'langremap' */
 #endif
 #if defined(FEAT_MENU) && defined(FEAT_MULTI_LANG)
 EXTERN char_u	*p_lm;		/* 'langmenu' */
diff --git a/src/testdir/test_mapping.vim b/src/testdir/test_mapping.vim
index a1281eb4d..66b81cecf 100644
--- a/src/testdir/test_mapping.vim
+++ b/src/testdir/test_mapping.vim
@@ -35,29 +35,73 @@ func Test_map_ctrl_c_visual()
 endfunc
 
 func Test_map_langmap()
-  " langmap should not get remapped in insert mode
-  inoremap { FAIL_ilangmap
-  set langmap=+{ langnoremap
+  if !has('langmap')
+    return
+  endif
+
+  " check langmap applies in normal mode
+  set langmap=+- nolangremap
+  new
+  call setline(1, ['a', 'b', 'c'])
+  2
+  call assert_equal('b', getline('.'))
+  call feedkeys("+", "xt")
+  call assert_equal('a', getline('.'))
+
+  " check no remapping
+  map x +
+  2
+  call feedkeys("x", "xt")
+  call assert_equal('c', getline('.'))
+
+  " check with remapping
+  set langremap
+  2
+  call feedkeys("x", "xt")
+  call assert_equal('a', getline('.'))
+
+  unmap x
+  bwipe!
+
+  " 'langnoremap' follows 'langremap' and vise versa
+  set langremap
+  set langnoremap
+  call assert_equal(0, &langremap)
+  set langremap
+  call assert_equal(0, &langnoremap)
+  set nolangremap
+  call assert_equal(1, &langnoremap)
+
+  " langmap should not apply in insert mode, 'langremap' doesn't matter
+  set langmap=+{ nolangremap
   call feedkeys("Go+\<Esc>", "xt")
   call assert_equal('+', getline('$'))
-
-  " Insert-mode expr mapping with langmap
-  inoremap <expr> { "FAIL_iexplangmap"
+  set langmap=+{ langremap
   call feedkeys("Go+\<Esc>", "xt")
   call assert_equal('+', getline('$'))
-  iunmap <expr> {
 
-  " langmap should not get remapped in Command-line mode
-  cnoremap { FAIL_clangmap
+  " langmap used for register name in insert mode.
+  call setreg('a', 'aaaa')
+  call setreg('b', 'bbbb')
+  call setreg('c', 'cccc')
+  set langmap=ab langremap
+  call feedkeys("Go\<C-R>a\<Esc>", "xt")
+  call assert_equal('bbbb', getline('$'))
+  call feedkeys("Go\<C-R>\<C-R>a\<Esc>", "xt")
+  call assert_equal('bbbb', getline('$'))
+  " mapping does not apply
+  imap c a
+  call feedkeys("Go\<C-R>c\<Esc>", "xt")
+  call assert_equal('cccc', getline('$'))
+  imap a c
+  call feedkeys("Go\<C-R>a\<Esc>", "xt")
+  call assert_equal('bbbb', getline('$'))
+ 
+  " langmap should not apply in Command-line mode
+  set langmap=+{ nolangremap
   call feedkeys(":call append(line('$'), '+')\<CR>", "xt")
   call assert_equal('+', getline('$'))
-  cunmap {
 
-  " Command-line mode expr mapping with langmap
-  cnoremap <expr> { "FAIL_cexplangmap"
-  call feedkeys(":call append(line('$'), '+')\<CR>", "xt")
-  call assert_equal('+', getline('$'))
-  cunmap {
   set nomodified
 endfunc
 
diff --git a/src/version.c b/src/version.c
index 65eb6d7c0..8b8653190 100644
--- a/src/version.c
+++ b/src/version.c
@@ -764,6 +764,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2236,
+/**/
     2235,
 /**/
     2234,