Merge #8701 from janlazo/vim-8.0.1140

12 files changed, 1766 insertions, 76 deletions

diff --git a/src/nvim/testdir/Makefile b/src/nvim/testdir/Makefile
index a161f14bc8..651ab3db2b 100644
--- a/src/nvim/testdir/Makefile
+++ b/src/nvim/testdir/Makefile
@@ -17,7 +17,6 @@ SCRIPTS_DEFAULT = \
            test14.out             \
            test24.out             \
            test37.out             \
-           test40.out             \
            test42.out             \
            test48.out             \
            test52.out             \
@@ -102,6 +101,7 @@ NEW_TESTS ?= \
 	    test_stat.res \
 	    test_startup.res \
 	    test_substitute.res \
+	    test_swap.res \
 	    test_syntax.res \
 	    test_system.res \
 	    test_tab.res \
@@ -114,6 +114,7 @@ NEW_TESTS ?= \
 	    test_visual.res \
 	    test_winbuf_close.res \
 	    test_window_id.res \
+	    test_wordcount.res \
 	    test_writefile.res \
 	    test_alot_latin.res \
 	    test_alot_utf8.res \
diff --git a/src/nvim/testdir/test40.in b/src/nvim/testdir/test40.in
deleted file mode 100644
index b0285709e5..0000000000
--- a/src/nvim/testdir/test40.in
+++ /dev/null
@@ -1,63 +0,0 @@
-Test for "*Cmd" autocommands
-
-STARTTEST
-:set wildchar=^E
-:/^start/,$w! Xxx		" write lines below to Xxx
-:au BufReadCmd XtestA 0r Xxx|$del
-:e XtestA			" will read text of Xxd instead
-:au BufWriteCmd XtestA call append(line("$"), "write")
-:w				" will append a line to the file
-:r XtestA			" should not read anything
-:				" now we have:
-:				" 1	start of Xxx
-:				" 2		test40
-:				" 3	end of Xxx
-:				" 4	write
-:au FileReadCmd XtestB '[r Xxx
-:2r XtestB			" will read Xxx below line 2 instead
-:				" 1	start of Xxx
-:				" 2		test40
-:				" 3	start of Xxx
-:				" 4		test40
-:				" 5	end of Xxx
-:				" 6	end of Xxx
-:				" 7	write
-:au FileWriteCmd XtestC '[,']copy $
-4GA1
-:4,5w XtestC			" will copy lines 4 and 5 to the end
-:r XtestC			" should not read anything
-:				" 1	start of Xxx
-:				" 2		test40
-:				" 3	start of Xxx
-:				" 4		test401
-:				" 5	end of Xxx
-:				" 6	end of Xxx
-:				" 7	write
-:				" 8		test401
-:				" 9	end of Xxx
-:au FILEAppendCmd XtestD '[,']w! test.out
-:w >>XtestD			" will write all lines to test.out
-:$r XtestD			" should not read anything
-:$w >>test.out			" append "end of Xxx" to test.out
-:au BufReadCmd XtestE 0r test.out|$del
-:sp XtestE			" split window with test.out
-5Goasdf:"
-:au BufWriteCmd XtestE w! test.out
-:wall				" will write other window to test.out
-:				" 1	start of Xxx
-:				" 2		test40
-:				" 3	start of Xxx
-:				" 4		test401
-:				" 5	end of Xxx
-:				" 6	asdf
-:				" 7	end of Xxx
-:				" 8	write
-:				" 9		test401
-:				" 10	end of Xxx
-:				" 11	end of Xxx
-:qa!
-ENDTEST
-
-start of Xxx
-	test40
-end of Xxx
diff --git a/src/nvim/testdir/test40.ok b/src/nvim/testdir/test40.ok
deleted file mode 100644
index b6501394f9..0000000000
--- a/src/nvim/testdir/test40.ok
+++ /dev/null
@@ -1,11 +0,0 @@
-start of Xxx
-	test40
-start of Xxx
-	test401
-end of Xxx
-asdf
-end of Xxx
-write
-	test401
-end of Xxx
-end of Xxx
diff --git a/src/nvim/testdir/test_alot.vim b/src/nvim/testdir/test_alot.vim
index 25e4fd5ae8..1a70ac152f 100644
--- a/src/nvim/testdir/test_alot.vim
+++ b/src/nvim/testdir/test_alot.vim
@@ -30,6 +30,7 @@ source test_put.vim
 source test_recover.vim
 source test_regexp_utf8.vim
 source test_scroll_opt.vim
+source test_sort.vim
 source test_source_utf8.vim
 source test_sha256.vim
 source test_statusline.vim
diff --git a/src/nvim/testdir/test_autocmd.vim b/src/nvim/testdir/test_autocmd.vim
index d42373920f..772b3f721c 100644
--- a/src/nvim/testdir/test_autocmd.vim
+++ b/src/nvim/testdir/test_autocmd.vim
@@ -1,6 +1,5 @@
 " Tests for autocommands
 
-
 func! s:cleanup_buffers() abort
   for bnr in range(1, bufnr('$'))
     if bufloaded(bnr) && bufnr('%') != bnr
diff --git a/src/nvim/testdir/test_fold.vim b/src/nvim/testdir/test_fold.vim
index 951df349ce..6917378890 100644
--- a/src/nvim/testdir/test_fold.vim
+++ b/src/nvim/testdir/test_fold.vim
@@ -467,3 +467,170 @@ func Test_fold_error()
   set foldmethod&
   bw!
 endfunc
+
+" Various fold related tests
+
+" Basic test if a fold can be created, opened, moving to the end and closed
+func Test_fold_manual()
+  enew!
+  set fdm=manual
+
+  let content = ['1 aa', '2 bb', '3 cc']
+  call append(0, content)
+  call cursor(1, 1)
+  normal zf2j
+  call assert_equal('1 aa', getline(foldclosed('.')))
+  normal zo
+  call assert_equal(-1, foldclosed('.'))
+  normal ]z
+  call assert_equal('3 cc', getline('.'))
+  normal zc
+  call assert_equal('1 aa', getline(foldclosed('.')))
+
+  set fdm&
+  enew!
+endfunc
+
+" test folding with markers.
+func Test_fold_marker()
+  enew!
+  set fdm=marker fdl=1 fdc=3
+
+  let content = ['4 dd {{{', '5 ee {{{ }}}', '6 ff }}}']
+  call append(0, content)
+  call cursor(2, 1)
+  call assert_equal(2, foldlevel('.'))
+  normal [z
+  call assert_equal(1, foldlevel('.'))
+  exe "normal jo{{ \<Esc>r{jj"
+  call assert_equal(1, foldlevel('.'))
+  normal kYpj
+  call assert_equal(0, foldlevel('.'))
+
+  set fdm& fdl& fdc&
+  enew!
+endfunc
+
+" test folding with indent
+func Test_fold_indent()
+  enew!
+  set fdm=indent sw=2
+
+  let content = ['1 aa', '2 bb', '3 cc']
+  call append(0, content)
+  call cursor(2, 1)
+  exe "normal i  \<Esc>jI    "
+  call assert_equal(2, foldlevel('.'))
+  normal k
+  call assert_equal(1, foldlevel('.'))
+
+  set fdm& sw&
+  enew!
+endfunc
+
+" test syntax folding
+func Test_fold_syntax()
+  if !has('syntax')
+    return
+  endif
+
+  enew!
+  set fdm=syntax fdl=0
+
+  syn region Hup start="dd" end="ii" fold contains=Fd1,Fd2,Fd3
+  syn region Fd1 start="ee" end="ff" fold contained
+  syn region Fd2 start="gg" end="hh" fold contained
+  syn region Fd3 start="commentstart" end="commentend" fold contained
+  let content = ['3 cc', '4 dd {{{', '5 ee {{{ }}}', '{{{{', '6 ff }}}',
+	      \ '6 ff }}}', '7 gg', '8 hh', '9 ii']
+  call append(0, content)
+  normal Gzk
+  call assert_equal('9 ii', getline('.'))
+  normal k
+  call assert_equal('3 cc', getline('.'))
+  exe "normal jAcommentstart   \<Esc>Acommentend"
+  set fdl=1
+  normal 3j
+  call assert_equal('7 gg', getline('.'))
+  set fdl=0
+  exe "normal zO\<C-L>j"
+  call assert_equal('8 hh', getline('.'))
+  syn clear Fd1 Fd2 Fd3 Hup
+
+  set fdm& fdl&
+  enew!
+endfunc
+
+func Flvl()
+  let l = getline(v:lnum)
+  if l =~ "bb$"
+    return 2
+  elseif l =~ "gg$"
+    return "s1"
+  elseif l =~ "ii$"
+    return ">2"
+  elseif l =~ "kk$"
+    return "0"
+  endif
+  return "="
+endfun
+
+" test expression folding
+func Test_fold_expr()
+  enew!
+  set fdm=expr fde=Flvl()
+
+  let content = ['1 aa',
+	      \ '2 bb',
+	      \ '3 cc',
+	      \ '4 dd {{{commentstart  commentend',
+	      \ '5 ee {{{ }}}',
+	      \ '{{{',
+	      \ '6 ff }}}',
+	      \ '6 ff }}}',
+	      \ '  7 gg',
+	      \ '    8 hh',
+	      \ '9 ii',
+	      \ 'a jj',
+	      \ 'b kk']
+  call append(0, content)
+  call cursor(1, 1)
+  exe "normal /bb$\<CR>"
+  call assert_equal(2, foldlevel('.'))
+  exe "normal /hh$\<CR>"
+  call assert_equal(1, foldlevel('.'))
+  exe "normal /ii$\<CR>"
+  call assert_equal(2, foldlevel('.'))
+  exe "normal /kk$\<CR>"
+  call assert_equal(0, foldlevel('.'))
+
+  set fdm& fde&
+  enew!
+endfunc
+
+" Bug with fdm=indent and moving folds
+" Moving a fold a few times, messes up the folds below the moved fold.
+" Fixed by 7.4.700
+func Test_fold_move()
+  enew!
+  set fdm=indent sw=2 fdl=0
+
+  let content = ['', '', 'Line1', '  Line2', '  Line3',
+	      \ 'Line4', '  Line5', '  Line6',
+	      \ 'Line7', '  Line8', '  Line9']
+  call append(0, content)
+  normal zM
+  call cursor(4, 1)
+  move 2
+  move 1
+  call assert_equal(7, foldclosed(7))
+  call assert_equal(8, foldclosedend(7))
+  call assert_equal(0, foldlevel(9))
+  call assert_equal(10, foldclosed(10))
+  call assert_equal(11, foldclosedend(10))
+  call assert_equal('+--  2 lines: Line2', foldtextresult(2))
+  call assert_equal('+--  2 lines: Line8', foldtextresult(10))
+
+  set fdm& sw& fdl&
+  enew!
+endfunc
diff --git a/src/nvim/testdir/test_sort.vim b/src/nvim/testdir/test_sort.vim
new file mode 100644
index 0000000000..4fddb47b58
--- /dev/null
+++ b/src/nvim/testdir/test_sort.vim
@@ -0,0 +1,1184 @@
+" Test sort()
+
+:func Compare1(a, b) abort
+    call sort(range(3), 'Compare2')
+    return a:a - a:b
+:endfunc
+
+:func Compare2(a, b) abort
+    return a:a - a:b
+:endfunc
+
+func Test_sort_strings()
+  " numbers compared as strings
+  call assert_equal([1, 2, 3], sort([3, 2, 1]))
+  call assert_equal([13, 28, 3], sort([3, 28, 13]))
+endfunc
+
+func Test_sort_numeric()
+  call assert_equal([1, 2, 3], sort([3, 2, 1], 'n'))
+  call assert_equal([3, 13, 28], sort([13, 28, 3], 'n'))
+  " strings are not sorted
+  call assert_equal(['13', '28', '3'], sort(['13', '28', '3'], 'n'))
+endfunc
+
+func Test_sort_numbers()
+  call assert_equal([3, 13, 28], sort([13, 28, 3], 'N'))
+  call assert_equal(['3', '13', '28'], sort(['13', '28', '3'], 'N'))
+endfunc
+
+func Test_sort_float()
+  call assert_equal([0.28, 3, 13.5], sort([13.5, 0.28, 3], 'f'))
+endfunc
+
+func Test_sort_nested()
+  " test ability to call sort() from a compare function
+  call assert_equal([1, 3, 5], sort([3, 1, 5], 'Compare1'))
+endfunc
+
+func Test_sort_default()
+  " docs say omitted, empty or zero argument sorts on string representation.
+  call assert_equal(['2', 'A', 'AA', 'a', 1, 3.3], sort([3.3, 1, "2", "A", "a", "AA"]))
+  call assert_equal(['2', 'A', 'AA', 'a', 1, 3.3], sort([3.3, 1, "2", "A", "a", "AA"], ''))
+  call assert_equal(['2', 'A', 'AA', 'a', 1, 3.3], sort([3.3, 1, "2", "A", "a", "AA"], 0))
+  call assert_equal(['2', 'A', 'a', 'AA', 1, 3.3], sort([3.3, 1, "2", "A", "a", "AA"], 1))
+  call assert_fails('call sort([3.3, 1, "2"], 3)', "E474")
+endfunc
+
+" Tests for the :sort command
+func Test_sort_cmd()
+  let tests = [
+	\ {
+	\    'name' : 'Alphabetical sort',
+	\    'cmd' : '%sort',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ],
+	\    'expected' : [
+	\	' 123b',
+	\	'a',
+	\	'a122',
+	\	'a123',
+	\	'a321',
+	\	'ab',
+	\	'abc',
+	\	'b123',
+	\	'b321',
+	\	'b321',
+	\	'b321b',
+	\	'b322b',
+	\	'c123d',
+	\	'c321d'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'Numeric sort',
+	\    'cmd' : '%sort n',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'a',
+	\	'x-22',
+	\	'b321',
+	\	'b123',
+	\	'',
+	\	'c123d',
+	\	'-24',
+	\	' 123b',
+	\	'c321d',
+	\	'0',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'-24',
+	\	'x-22',
+	\	'0',
+	\	'a122',
+	\	'a123',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'a321',
+	\	'b321',
+	\	'c321d',
+	\	'b321',
+	\	'b321b',
+	\	'b322b'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'Hexadecimal sort',
+	\    'cmd' : '%sort x',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ],
+	\    'expected' : [
+	\	'a',
+	\	'ab',
+	\	'abc',
+	\	' 123b',
+	\	'a122',
+	\	'a123',
+	\	'a321',
+	\	'b123',
+	\	'b321',
+	\	'b321',
+	\	'b321b',
+	\	'b322b',
+	\	'c123d',
+	\	'c321d'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'Alphabetical unique sort',
+	\    'cmd' : '%sort u',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ],
+	\    'expected' : [
+	\	' 123b',
+	\	'a',
+	\	'a122',
+	\	'a123',
+	\	'a321',
+	\	'ab',
+	\	'abc',
+	\	'b123',
+	\	'b321',
+	\	'b321b',
+	\	'b322b',
+	\	'c123d',
+	\	'c321d'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'Alphabetical reverse sort',
+	\    'cmd' : '%sort!',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ],
+	\    'expected' : [
+	\	'c321d',
+	\	'c123d',
+	\	'b322b',
+	\	'b321b',
+	\	'b321',
+	\	'b321',
+	\	'b123',
+	\	'abc',
+	\	'ab',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'a',
+	\	' 123b',
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'Numeric reverse sort',
+	\    'cmd' : '%sort! n',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ],
+	\    'expected' : [
+	\	'b322b',
+	\	'b321b',
+	\	'b321',
+	\	'c321d',
+	\	'b321',
+	\	'a321',
+	\	' 123b',
+	\	'c123d',
+	\	'b123',
+	\	'a123',
+	\	'a122',
+	\	'a',
+	\	'ab',
+	\	'abc'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'Unique reverse sort',
+	\    'cmd' : 'sort! u',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ],
+	\    'expected' : [
+	\	'c321d',
+	\	'c123d',
+	\	'b322b',
+	\	'b321b',
+	\	'b321',
+	\	'b123',
+	\	'abc',
+	\	'ab',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'a',
+	\	' 123b',
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'Octal sort',
+	\    'cmd' : 'sort o',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a122',
+	\	'a123',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'a321',
+	\	'b321',
+	\	'c321d',
+	\	'b321',
+	\	'b321b',
+	\	'b322b'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'Reverse hexadecimal sort',
+	\    'cmd' : 'sort! x',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'c321d',
+	\	'c123d',
+	\	'b322b',
+	\	'b321b',
+	\	'b321',
+	\	'b321',
+	\	'b123',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	' 123b',
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	''
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'Alpha (skip first character) sort',
+	\    'cmd' : 'sort/./',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'a',
+	\	'',
+	\	'',
+	\	'a122',
+	\	'a123',
+	\	'b123',
+	\	' 123b',
+	\	'c123d',
+	\	'a321',
+	\	'b321',
+	\	'b321',
+	\	'b321b',
+	\	'c321d',
+	\	'b322b',
+	\	'ab',
+	\	'abc'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'Alpha (skip first 2 characters) sort',
+	\    'cmd' : 'sort/../',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a321',
+	\	'b321',
+	\	'b321',
+	\	'b321b',
+	\	'c321d',
+	\	'a122',
+	\	'b322b',
+	\	'a123',
+	\	'b123',
+	\	' 123b',
+	\	'c123d',
+	\	'abc'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'alpha, unique, skip first 2 characters',
+	\    'cmd' : 'sort/../u',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'a321',
+	\	'b321',
+	\	'b321b',
+	\	'c321d',
+	\	'a122',
+	\	'b322b',
+	\	'a123',
+	\	'b123',
+	\	' 123b',
+	\	'c123d',
+	\	'abc'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'numeric, skip first character',
+	\    'cmd' : 'sort/./n',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a122',
+	\	'a123',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'a321',
+	\	'b321',
+	\	'c321d',
+	\	'b321',
+	\	'b321b',
+	\	'b322b'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'alpha, sort on first character',
+	\    'cmd' : 'sort/./r',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'',
+	\	'',
+	\	' 123b',
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'c123d',
+	\	'c321d'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'alpha, sort on first 2 characters',
+	\    'cmd' : 'sort/../r',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'a',
+	\	'',
+	\	'',
+	\	' 123b',
+	\	'a123',
+	\	'a122',
+	\	'a321',
+	\	'abc',
+	\	'ab',
+	\	'b123',
+	\	'b321',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'c123d',
+	\	'c321d'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'numeric, sort on first character',
+	\    'cmd' : 'sort/./rn',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'alpha, skip past first digit',
+	\    'cmd' : 'sort/\d/',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a321',
+	\	'b321',
+	\	'b321',
+	\	'b321b',
+	\	'c321d',
+	\	'a122',
+	\	'b322b',
+	\	'a123',
+	\	'b123',
+	\	' 123b',
+	\	'c123d'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'alpha, sort on first digit',
+	\    'cmd' : 'sort/\d/r',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a123',
+	\	'a122',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'a321',
+	\	'b321',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'numeric, skip past first digit',
+	\    'cmd' : 'sort/\d/n',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a321',
+	\	'b321',
+	\	'c321d',
+	\	'b321',
+	\	'b321b',
+	\	'a122',
+	\	'b322b',
+	\	'a123',
+	\	'b123',
+	\	'c123d',
+	\	' 123b'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'numeric, sort on first digit',
+	\    'cmd' : 'sort/\d/rn',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a123',
+	\	'a122',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'a321',
+	\	'b321',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'alpha, skip past first 2 digits',
+	\    'cmd' : 'sort/\d\d/',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a321',
+	\	'b321',
+	\	'b321',
+	\	'b321b',
+	\	'c321d',
+	\	'a122',
+	\	'b322b',
+	\	'a123',
+	\	'b123',
+	\	' 123b',
+	\	'c123d'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'numeric, skip past first 2 digits',
+	\    'cmd' : 'sort/\d\d/n',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a321',
+	\	'b321',
+	\	'c321d',
+	\	'b321',
+	\	'b321b',
+	\	'a122',
+	\	'b322b',
+	\	'a123',
+	\	'b123',
+	\	'c123d',
+	\	' 123b'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'hexadecimal, skip past first 2 digits',
+	\    'cmd' : 'sort/\d\d/x',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a321',
+	\	'b321',
+	\	'b321',
+	\	'a122',
+	\	'a123',
+	\	'b123',
+	\	'b321b',
+	\	'c321d',
+	\	'b322b',
+	\	' 123b',
+	\	'c123d'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'alpha, sort on first 2 digits',
+	\    'cmd' : 'sort/\d\d/r',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a123',
+	\	'a122',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'a321',
+	\	'b321',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'numeric, sort on first 2 digits',
+	\    'cmd' : 'sort/\d\d/rn',
+	\    'input' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'a321',
+	\	'a123',
+	\	'a122',
+	\	'b321',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b',
+	\	'',
+	\	''
+	\    ],
+	\    'expected' : [
+	\	'abc',
+	\	'ab',
+	\	'a',
+	\	'',
+	\	'',
+	\	'a123',
+	\	'a122',
+	\	'b123',
+	\	'c123d',
+	\	' 123b',
+	\	'a321',
+	\	'b321',
+	\	'c321d',
+	\	'b322b',
+	\	'b321',
+	\	'b321b'
+	\    ]
+	\ },
+	\ {
+	\    'name' : 'hexadecimal, sort on first 2 digits',
+	\    'cmd' : 'sort/\d\d/rx',
+	\    'input' : [