patch 8.1.1911: more functions can be used as methods

Problem:    More functions can be used as methods.
Solution:   Make a few more functions usable as a method.

runtime/doc/eval.txt

@@ -3299,7 +3299,11 @@ byte2line({byte})					*byte2line()*
 		for the current buffer.  The first character has byte count
 		one.
 		Also see |line2byte()|, |go| and |:goto|.
-		{not available when compiled without the |+byte_offset|
+
+		Can also be used as a |method|: >
+			GetOffset()->byte2line()
+
+<		{not available when compiled without the |+byte_offset|
 		feature}
 
 byteidx({expr}, {nr})					*byteidx()*
@@ -3323,6 +3327,9 @@ byteidx({expr}, {nr})					*byteidx()*
 		If there are exactly {nr} characters the length of the string
 		in bytes is returned.
 
+		Can also be used as a |method|: >
+			GetName()->byteidx(idx)
+
 byteidxcomp({expr}, {nr})					*byteidxcomp()*
 		Like byteidx(), except that a composing character is counted
 		as a separate character.  Example: >
@@ -3336,6 +3343,9 @@ byteidxcomp({expr}, {nr})					*byteidxcomp()*
 		Only works different from byteidx() when 'encoding' is set to
 		a Unicode encoding.
 
+		Can also be used as a |method|: >
+			GetName()->byteidxcomp(idx)
+
 call({func}, {arglist} [, {dict}])			*call()* *E699*
 		Call function {func} with the items in |List| {arglist} as
 		arguments.
@@ -3345,6 +3355,9 @@ call({func}, {arglist} [, {dict}])			*call()* *E699*
 		{dict} is for functions with the "dict" attribute.  It will be
 		used to set the local variable "self". |Dictionary-function|
 
+		Can also be used as a |method|: >
+			GetFunc()->call([arg, arg], dict)
+
 ceil({expr})							*ceil()*
 		Return the smallest integral value greater than or equal to
 		{expr} as a |Float| (round up).

src/evalfunc.c

@@ -466,10 +466,10 @@ static funcentry_T global_functions[] =
     {"bufnr",		1, 2, FEARG_1,	  f_bufnr},
     {"bufwinid",	1, 1, FEARG_1,	  f_bufwinid},
     {"bufwinnr",	1, 1, FEARG_1,	  f_bufwinnr},
-    {"byte2line",	1, 1, 0,	  f_byte2line},
+    {"byte2line",	1, 1, FEARG_1,	  f_byte2line},
-    {"byteidx",		2, 2, 0,	  f_byteidx},
+    {"byteidx",		2, 2, FEARG_1,	  f_byteidx},
-    {"byteidxcomp",	2, 2, 0,	  f_byteidxcomp},
+    {"byteidxcomp",	2, 2, FEARG_1,	  f_byteidxcomp},
-    {"call",		2, 3, 0,	  f_call},
+    {"call",		2, 3, FEARG_1,	  f_call},
 #ifdef FEAT_FLOAT
     {"ceil",		1, 1, FEARG_1,	  f_ceil},
 #endif

src/testdir/test69.in

@@ -164,21 +164,6 @@ ENDTEST
 á
 x
 
-STARTTEST
-:let a = '.é.' " one char of two bytes
-:let b = '.é.' " normal e with composing char
-/^byteidx
-:put =string([byteidx(a, 0), byteidx(a, 1), byteidx(a, 2), byteidx(a, 3), byteidx(a, 4)])
-:put =string([byteidx(b, 0), byteidx(b, 1), byteidx(b, 2), byteidx(b, 3), byteidx(b, 4)])
-/^byteidxcomp
-:put =string([byteidxcomp(a, 0), byteidxcomp(a, 1), byteidxcomp(a, 2), byteidxcomp(a, 3), byteidxcomp(a, 4)])
-:let b = '.é.'
-:put =string([byteidxcomp(b, 0), byteidxcomp(b, 1), byteidxcomp(b, 2), byteidxcomp(b, 3), byteidxcomp(b, 4), byteidxcomp(b, 5)])
-ENDTEST
-
-byteidx
-byteidxcomp
-
 STARTTEST
 /^substitute
 :let y = substitute('１２３', '\zs', 'a', 'g')    | put =y

src/testdir/test69.ok

@@ -153,14 +153,6 @@ aaa
 áx
 
 
-byteidx
-[0, 1, 3, 4, -1]
-[0, 1, 4, 5, -1]
-byteidxcomp
-[0, 1, 3, 4, -1]
-[0, 1, 2, 4, 5, -1]
-
-
 substitute
 a１a２a３a
 

src/testdir/test_functions.vim

@@ -872,7 +872,7 @@ func Test_byte2line_line2byte()
 
   set fileformat=mac
   call assert_equal([-1, -1, 1, 1, 2, 2, 2, 3, 3, -1],
-  \                 map(range(-1, 8), 'byte2line(v:val)'))
+  \                 map(range(-1, 8), 'v:val->byte2line()'))
   call assert_equal([-1, -1, 1, 3, 6, 8, -1],
   \                 map(range(-1, 5), 'line2byte(v:val)'))
 
@@ -895,6 +895,34 @@ func Test_byte2line_line2byte()
   bw!
 endfunc
 
+func Test_byteidx()
+  let a = '.é.' " one char of two bytes
+  call assert_equal(0, byteidx(a, 0))
+  call assert_equal(0, byteidxcomp(a, 0))
+  call assert_equal(1, byteidx(a, 1))
+  call assert_equal(1, byteidxcomp(a, 1))
+  call assert_equal(3, byteidx(a, 2))
+  call assert_equal(3, byteidxcomp(a, 2))
+  call assert_equal(4, byteidx(a, 3))
+  call assert_equal(4, byteidxcomp(a, 3))
+  call assert_equal(-1, byteidx(a, 4))
+  call assert_equal(-1, byteidxcomp(a, 4))
+
+  let b = '.é.' " normal e with composing char
+  call assert_equal(0, b->byteidx(0))
+  call assert_equal(1, b->byteidx(1))
+  call assert_equal(4, b->byteidx(2))
+  call assert_equal(5, b->byteidx(3))
+  call assert_equal(-1, b->byteidx(4))
+
+  call assert_equal(0, b->byteidxcomp(0))
+  call assert_equal(1, b->byteidxcomp(1))
+  call assert_equal(2, b->byteidxcomp(2))
+  call assert_equal(4, b->byteidxcomp(3))
+  call assert_equal(5, b->byteidxcomp(4))
+  call assert_equal(-1, b->byteidxcomp(5))
+endfunc
+
 func Test_count()
   let l = ['a', 'a', 'A', 'b']
   call assert_equal(2, count(l, 'a'))
@@ -1506,6 +1534,7 @@ endfunc
 
 func Test_call()
   call assert_equal(3, call('len', [123]))
+  call assert_equal(3, 'len'->call([123]))
   call assert_fails("call call('len', 123)", 'E714:')
   call assert_equal(0, call('', []))
 
@@ -1513,6 +1542,7 @@ func Test_call()
      return len(self.data)
   endfunction
   let mydict = {'data': [0, 1, 2, 3], 'len': function("Mylen")}
+  eval mydict.len->call([], mydict)->assert_equal(4)
   call assert_fails("call call('Mylen', [], 0)", 'E715:')
 endfunc
 

src/version.c

@@ -761,6 +761,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1911,
 /**/
     1910,
 /**/