Merge pull request #4879 from justinmk/test55

tests: Migrate legacy test 55
This commit is contained in:
Justin M. Keyes
2016-06-05 04:42:46 -04:00
4 changed files with 949 additions and 800 deletions

View File

@@ -0,0 +1,949 @@
-- Tests for List and Dictionary types.
local helpers = require('test.functional.helpers')
local feed, source = helpers.feed, helpers.source
local clear, execute, expect = helpers.clear, helpers.execute, helpers.expect
describe('list and dictionary types', function()
before_each(clear)
it('creating list directly with different types', function()
source([[
lang C
let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
$put =string(l)
$put =string(l[-1])
$put =string(l[-4])
try
$put =string(l[-5])
catch
$put =v:exception[:14]
endtry]])
expect([[
[1, 'as''d', [1, 2, function('strlen')], {'a': 1}]
{'a': 1}
1
Vim(put):E684: ]])
end)
it('list slices', function()
source([[
lang C
" The list from the first test repeated after splitting the tests.
let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
$put =string(l[:])
$put =string(l[1:])
$put =string(l[:-2])
$put =string(l[0:8])
$put =string(l[8:-1])]])
expect([=[
[1, 'as''d', [1, 2, function('strlen')], {'a': 1}]
['as''d', [1, 2, function('strlen')], {'a': 1}]
[1, 'as''d', [1, 2, function('strlen')]]
[1, 'as''d', [1, 2, function('strlen')], {'a': 1}]
[]]=])
end)
it('list identity', function()
source([[
lang C
" The list from the first test repeated after splitting the tests.
let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
let ll = l
let lx = copy(l)
try
$put =(l == ll) . (l isnot ll) . (l is ll) . (l == lx) .
\ (l is lx) . (l isnot lx)
catch
$put =v:exception
endtry]])
expect('\n101101')
end)
it('creating dictionary directly with different types', function()
source([[
lang C
let d = {001: 'asd', 'b': [1, 2, function('strlen')], -1: {'a': 1},}
$put =string(d) . d.1
$put =string(sort(keys(d)))
$put =string (values(d))
for [key, val] in items(d)
$put =key . ':' . string(val)
unlet key val
endfor
call extend (d, {3:33, 1:99})
call extend(d, {'b':'bbb', 'c':'ccc'}, "keep")
try
call extend(d, {3:333,4:444}, "error")
catch
$put =v:exception[:15] . v:exception[-1:-1]
endtry
$put =string(d)
call filter(d, 'v:key =~ ''[ac391]''')
$put =string(d)]])
expect([[
{'1': 'asd', 'b': [1, 2, function('strlen')], '-1': {'a': 1}}asd
['-1', '1', 'b']
['asd', [1, 2, function('strlen')], {'a': 1}]
1:'asd'
b:[1, 2, function('strlen')]
-1:{'a': 1}
Vim(call):E737: 3
{'c': 'ccc', '1': 99, 'b': [1, 2, function('strlen')], '3': 33, '-1': {'a': 1}}
{'c': 'ccc', '1': 99, '3': 33, '-1': {'a': 1}}]])
end)
it('dictionary identity', function()
source([[
lang C
" The dict from the first test repeated after splitting the tests.
let d = {'c': 'ccc', '1': 99, '3': 33, '-1': {'a': 1}}
let dd = d
let dx = copy(d)
try
$put =(d == dd) . (d isnot dd) . (d is dd) . (d == dx) . (d is dx) .
\ (d isnot dx)
catch
$put =v:exception
endtry]])
expect('\n101101')
end)
it('changing var type should fail', function()
source([[
lang C
" The list from the first test repeated after splitting the tests.
let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
" The dict from the first test repeated after splitting the tests.
let d = {'c': 'ccc', '1': 99, '3': 33, '-1': {'a': 1}}
try
let d = []
catch
$put =v:exception[:14] . v:exception[-1:-1]
endtry
try
let l = {}
catch
$put =v:exception[:14] . v:exception[-1:-1]
endtry]])
expect([[
Vim(let):E706: d
Vim(let):E706: l]])
end)
it('removing items with :unlet', function()
source([[
lang C
" The list from the first test repeated after splitting the tests.
let l = [1, 'as''d', [1, 2, function("strlen")], {'a': 1},]
" The dict from the first test repeated after splitting the tests.
let d = {'c': 'ccc', '1': 99, '3': 33, '-1': {'a': 1}}
unlet l[2]
$put =string(l)
let l = range(8)
try
unlet l[:3]
unlet l[1:]
catch
$put =v:exception
endtry
$put =string(l)
unlet d.c
unlet d[-1]
$put =string(d)]])
expect([[
[1, 'as''d', {'a': 1}]
[4]
{'1': 99, '3': 33}]])
end)
it("removing items out of range: silently skip items that don't exist", function()
-- We can not use source() here as we want to ignore all errors.
execute('lang C')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[2:1]')
execute('$put =string(l)')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[2:2]')
execute('$put =string(l)')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[2:3]')
execute('$put =string(l)')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[2:4]')
execute('$put =string(l)')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[2:5]')
execute('$put =string(l)')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[-1:2]')
execute('$put =string(l)')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[-2:2]')
execute('$put =string(l)')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[-3:2]')
execute('$put =string(l)')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[-4:2]')
execute('$put =string(l)')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[-5:2]')
execute('$put =string(l)')
execute('let l = [0, 1, 2, 3]')
execute('unlet l[-6:2]')
execute('$put =string(l)')
expect([=[
[0, 1, 2, 3]
[0, 1, 3]
[0, 1]
[0, 1]
[0, 1]
[0, 1, 2, 3]
[0, 1, 3]
[0, 3]
[3]
[3]
[3]]=])
end)
it('assignment to a list', function()
source([[
let l = [0, 1, 2, 3]
let [va, vb] = l[2:3]
$put =va
$put =vb
try
let [va, vb] = l
catch
$put =v:exception[:14]
endtry
try
let [va, vb] = l[1:1]
catch
$put =v:exception[:14]
endtry]])
expect([[
2
3
Vim(let):E687:
Vim(let):E688: ]])
end)
it('manipulating a big dictionary', function()
-- Manipulating a big Dictionary (hashtable.c has a border of 1000
-- entries).
source([[
let d = {}
for i in range(1500)
let d[i] = 3000 - i
endfor
$put =d[0] . ' ' . d[100] . ' ' . d[999] . ' ' . d[1400] . ' ' .
\ d[1499]
try
let n = d[1500]
catch
$put =substitute(v:exception, '\v(.{14}).*( \d{4}).*', '\1\2', '')
endtry
" Lookup each items.
for i in range(1500)
if d[i] != 3000 - i
$put =d[i]
endif
endfor
let i += 1
" Delete even items.
while i >= 2
let i -= 2
unlet d[i]
endwhile
$put =get(d, 1500 - 100, 'NONE') . ' ' . d[1]
" Delete odd items, checking value, one intentionally wrong.
let d[33] = 999
let i = 1
while i < 1500
if d[i] != 3000 - i
$put =i . '=' . d[i]
else
unlet d[i]
endif
let i += 2
endwhile
" Must be almost empty now.
$put =string(d)]])
expect([[
3000 2900 2001 1600 1501
Vim(let):E716: 1500
NONE 2999
33=999
{'33': 999}]])
end)
it('dictionary function', function()
source([[
let dict = {}
func dict.func(a) dict
$put =a:a . len(self.data)
endfunc
let dict.data = [1,2,3]
call dict.func("len: ")
let x = dict.func("again: ")
try
let Fn = dict.func
call Fn('xxx')
catch
$put =v:exception[:15]
endtry]])
expect([[
len: 3
again: 3
Vim(call):E725: ]])
end)
it('Function in script-local List or Dict', function()
source([[
let g:dict = {}
function g:dict.func() dict
$put ='g:dict.func'.self.foo[1].self.foo[0]('asdf')
endfunc
let g:dict.foo = ['-', 2, 3]
call insert(g:dict.foo, function('strlen'))
call g:dict.func()]])
expect('\ng:dict.func-4')
end)
it("remove func from dict that's being called (works)", function()
source([[
let d = {1:1}
func d.func(a)
return "a:". a:a
endfunc
$put =d.func(string(remove(d, 'func')))]])
-- The function number changed from 3 to 1 because we split the test.
-- There were two other functions in the old test before this.
expect("\na:function('1')")
end)
it('deepcopy() dict that refers to itself', function()
-- Nasty: deepcopy() dict that refers to itself (fails when noref used).
source([[
let d = {1:1, 2:2}
let l = [4, d, 6]
let d[3] = l
let dc = deepcopy(d)
try
let dc = deepcopy(d, 1)
catch
$put =v:exception[:14]
endtry
let l2 = [0, l, l, 3]
let l[1] = l2
let l3 = deepcopy(l2)
$put ='same list: ' . (l3[1] is l3[2])]])
expect([[
Vim(let):E698:
same list: 1]])
end)
it('locked variables (part 1)', function()
source([=[
let l = []
for depth in range(5)
$put ='depth is ' . depth
for u in range(3)
unlet l
let l = [0, [1, [2, 3]], {4: 5, 6: {7: 8}}]
exe "lockvar " . depth . " l"
if u == 1
exe "unlockvar l"
elseif u == 2
exe "unlockvar " . depth . " l"
endif
let ps = islocked("l") . islocked("l[1]") . islocked("l[1][1]") .
\ islocked("l[1][1][0]") . '-' . islocked("l[2]") .
\ islocked("l[2]['6']") . islocked("l[2]['6'][7]")
$put =ps
let ps = ''
try
let l[1][1][0] = 99
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
let l[1][1] = [99]
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
let l[1] = [99]
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
let l[2]['6'][7] = 99
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
let l[2][6] = {99: 99}
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
let l[2] = {99: 99}
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
let l = [99]
let ps .= 'p'
catch
let ps .= 'F'
endtry
$put =ps
endfor
endfor]=])
expect([[
depth is 0
0000-000
ppppppp
0000-000
ppppppp
0000-000
ppppppp
depth is 1
1000-000
ppppppF
0000-000
ppppppp
0000-000
ppppppp
depth is 2
1100-100
ppFppFF
0000-000
ppppppp
0000-000
ppppppp
depth is 3
1110-110
pFFpFFF
0010-010
pFppFpp
0000-000
ppppppp
depth is 4
1111-111
FFFFFFF
0011-011
FFpFFpp
0000-000
ppppppp]])
end)
-- TODO In the original test the 5th line of this source() call was used.
-- But now the test only passes if I comment it.
it('unletting locked variables', function()
source([=[
let l = []
for depth in range(5)
$put ='depth is ' . depth
for u in range(3)
"unlet l
let l = [0, [1, [2, 3]], {4: 5, 6: {7: 8}}]
exe "lockvar " . depth . " l"
if u == 1
exe "unlockvar l"
elseif u == 2
exe "unlockvar " . depth . " l"
endif
let ps = islocked("l") . islocked("l[1]") . islocked("l[1][1]") .
\ islocked("l[1][1][0]") . '-' . islocked("l[2]") .
\ islocked("l[2]['6']") . islocked("l[2]['6'][7]")
$put =ps
let ps = ''
try
unlet l[2]['6'][7]
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
unlet l[2][6]
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
unlet l[2]
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
unlet l[1][1][0]
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
unlet l[1][1]
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
unlet l[1]
let ps .= 'p'
catch
let ps .= 'F'
endtry
try
unlet l
let ps .= 'p'
catch
let ps .= 'F'
endtry
$put =ps
endfor
endfor]=])
expect([[
depth is 0
0000-000
ppppppp
0000-000
ppppppp
0000-000
ppppppp
depth is 1
1000-000
ppFppFp
0000-000
ppppppp
0000-000
ppppppp
depth is 2
1100-100
pFFpFFp
0000-000
ppppppp
0000-000
ppppppp
depth is 3
1110-110
FFFFFFp
0010-010
FppFppp
0000-000
ppppppp
depth is 4
1111-111
FFFFFFp
0011-011
FppFppp
0000-000
ppppppp]])
end)
it('locked variables and :unlet or list / dict functions', function()
source([[
$put ='Locks and commands or functions:'
$put ='No :unlet after lock on dict:'
unlet! d
let d = {'a': 99, 'b': 100}
lockvar 1 d
try
unlet d.a
$put ='did :unlet'
catch
$put =v:exception[:16]
endtry
$put =string(d)
$put =':unlet after lock on dict item:'
unlet! d
let d = {'a': 99, 'b': 100}
lockvar d.a
try
unlet d.a
$put ='did :unlet'
catch
$put =v:exception[:16]
endtry
$put =string(d)
$put ='filter() after lock on dict item:'
unlet! d
let d = {'a': 99, 'b': 100}
lockvar d.a
try
call filter(d, 'v:key != "a"')
$put ='did filter()'
catch
$put =v:exception[:16]
endtry
$put =string(d)
$put ='map() after lock on dict:'
unlet! d
let d = {'a': 99, 'b': 100}
lockvar 1 d
try
call map(d, 'v:val + 200')
$put ='did map()'
catch
$put =v:exception[:16]
endtry
$put =string(d)
$put ='No extend() after lock on dict item:'
unlet! d
let d = {'a': 99, 'b': 100}
lockvar d.a
try
$put =string(extend(d, {'a': 123}))
$put ='did extend()'
catch
$put =v:exception[:14]
endtry
$put =string(d)
$put ='No remove() of write-protected scope-level variable:'
fun! Tfunc(this_is_a_loooooooooong_parameter_name)
try
$put =string(remove(a:, 'this_is_a_loooooooooong_parameter_name'))
$put ='did remove()'
catch
$put =v:exception[:14]
endtry
endfun
call Tfunc('testval')
$put ='No extend() of write-protected scope-level variable:'
fun! Tfunc(this_is_a_loooooooooong_parameter_name)
try
$put =string(extend(a:, {'this_is_a_loooooooooong_parameter_name': 1234}))
$put ='did extend()'
catch
$put =v:exception[:14]
endtry
endfun
call Tfunc('testval')
$put ='No :unlet of variable in locked scope:'
let b:testvar = 123
lockvar 1 b:
try
unlet b:testvar
$put ='b:testvar was :unlet: '. (!exists('b:testvar'))
catch
$put =v:exception[:16]
endtry
unlockvar 1 b:
unlet! b:testvar
$put ='No :let += of locked list variable:'
let l = ['a', 'b', 3]
lockvar 1 l
try
let l += ['x']
$put ='did :let +='
catch
$put =v:exception[:14]
endtry
$put =string(l)]])
expect([=[
Locks and commands or functions:
No :unlet after lock on dict:
Vim(unlet):E741:
{'a': 99, 'b': 100}
:unlet after lock on dict item:
did :unlet
{'b': 100}
filter() after lock on dict item:
did filter()
{'b': 100}
map() after lock on dict:
did map()
{'a': 299, 'b': 300}
No extend() after lock on dict item:
Vim(put):E741:
{'a': 99, 'b': 100}
No remove() of write-protected scope-level variable:
Vim(put):E795:
No extend() of write-protected scope-level variable:
Vim(put):E742:
No :unlet of variable in locked scope:
Vim(unlet):E741:
No :let += of locked list variable:
Vim(let):E741:
['a', 'b', 3]]=])
end)
it('locked variables (part 2)', function()
execute(
'let l = [1, 2, 3, 4]',
'lockvar! l',
'$put =string(l)',
'unlockvar l[1]',
'unlet l[0:1]',
'$put =string(l)',
'unlet l[1:2]',
'$put =string(l)',
'unlockvar l[1]',
'let l[0:1] = [0, 1]',
'$put =string(l)',
'let l[1:2] = [0, 1]',
'$put =string(l)')
expect([=[
[1, 2, 3, 4]
[1, 2, 3, 4]
[1, 2, 3, 4]
[1, 2, 3, 4]
[1, 2, 3, 4]]=])
end)
it(':lockvar/islocked() triggering script autoloading.', function()
source([[
set rtp+=test/functional/fixtures
lockvar g:footest#x
unlockvar g:footest#x
$put ='locked g:footest#x:'.islocked('g:footest#x')
$put ='exists g:footest#x:'.exists('g:footest#x')
$put ='g:footest#x: '.g:footest#x]])
expect([[
locked g:footest#x:-1
exists g:footest#x:0
g:footest#x: 1]])
end)
it('a:000 function argument', function()
source([[
function Test(...)
" First the tests that should fail.
try
let a:000 = [1, 2]
catch
$put ='caught a:000'
endtry
try
let a:000[0] = 9
catch
$put ='caught a:000[0]'
endtry
try
let a:000[2] = [9, 10]
catch
$put ='caught a:000[2]'
endtry
try
let a:000[3] = {9: 10}
catch
$put ='caught a:000[3]'
endtry
" Now the tests that should pass.
try
let a:000[2][1] = 9
call extend(a:000[2], [5, 6])
let a:000[3][5] = 8
let a:000[3]['a'] = 12
$put =string(a:000)
catch
$put ='caught ' . v:exception
endtry
endfunction]])
execute('call Test(1, 2, [3, 4], {5: 6})')
expect([=[
caught a:000
caught a:000[0]
caught a:000[2]
caught a:000[3]
[1, 2, [3, 9, 5, 6], {'a': 12, '5': 8}]]=])
end)
it('reverse(), sort(), uniq()', function()
source([=[
let l = ['-0', 'A11', 2, 2, 'xaaa', 4, 'foo', 'foo6', 'foo',
\ [0, 1, 2], 'x8', [0, 1, 2], 1.5]
$put =string(uniq(copy(l)))
$put =string(reverse(l))
$put =string(reverse(reverse(l)))
$put =string(sort(l))
$put =string(reverse(sort(l)))
$put =string(sort(reverse(sort(l))))
$put =string(uniq(sort(l)))
let l=[7, 9, 'one', 18, 12, 22, 'two', 10.0e-16, -1, 'three', 0xff,
\ 0.22, 'four']
$put =string(sort(copy(l), 'n'))
let l=[7, 9, 18, 12, 22, 10.0e-16, -1, 0xff, 0, -0, 0.22, 'bar',
\ 'BAR', 'Bar', 'Foo', 'FOO', 'foo', 'FOOBAR', {}, []]
$put =string(sort(copy(l), 1))
$put =string(sort(copy(l), 'i'))
$put =string(sort(copy(l)))]=])
expect([=[
['-0', 'A11', 2, 'xaaa', 4, 'foo', 'foo6', 'foo', [0, 1, 2], 'x8', [0, 1, 2], 1.5]
[1.5, [0, 1, 2], 'x8', [0, 1, 2], 'foo', 'foo6', 'foo', 4, 'xaaa', 2, 2, 'A11', '-0']
[1.5, [0, 1, 2], 'x8', [0, 1, 2], 'foo', 'foo6', 'foo', 4, 'xaaa', 2, 2, 'A11', '-0']
['-0', 'A11', 'foo', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 2, 4, [0, 1, 2], [0, 1, 2]]
[[0, 1, 2], [0, 1, 2], 4, 2, 2, 1.5, 'xaaa', 'x8', 'foo6', 'foo', 'foo', 'A11', '-0']
['-0', 'A11', 'foo', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 2, 4, [0, 1, 2], [0, 1, 2]]
['-0', 'A11', 'foo', 'foo6', 'x8', 'xaaa', 1.5, 2, 4, [0, 1, 2]]
[-1, 'one', 'two', 'three', 'four', 1.0e-15, 0.22, 7, 9, 12, 18, 22, 255]
['bar', 'BAR', 'Bar', 'Foo', 'FOO', 'foo', 'FOOBAR', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}]
['bar', 'BAR', 'Bar', 'Foo', 'FOO', 'foo', 'FOOBAR', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}]
['BAR', 'Bar', 'FOO', 'FOOBAR', 'Foo', 'bar', 'foo', -1, 0, 0, 0.22, 1.0e-15, 12, 18, 22, 255, 7, 9, [], {}]]=])
end)
it('splitting a string to a list', function()
source([[
$put =string(split(' aa bb '))
$put =string(split(' aa bb ', '\W\+', 0))
$put =string(split(' aa bb ', '\W\+', 1))
$put =string(split(' aa bb ', '\W', 1))
$put =string(split(':aa::bb:', ':', 0))
$put =string(split(':aa::bb:', ':', 1))
$put =string(split('aa,,bb, cc,', ',\s*', 1))
$put =string(split('abc', '\zs'))
$put =string(split('abc', '\zs', 1))]])
expect([=[
['aa', 'bb']
['aa', 'bb']
['', 'aa', 'bb', '']
['', '', 'aa', '', 'bb', '', '']
['aa', '', 'bb']
['', 'aa', '', 'bb', '']
['aa', '', 'bb', 'cc', '']
['a', 'b', 'c']
['', 'a', '', 'b', '', 'c', '']]=])
end)
it('compare recursively linked list and dict', function()
source([[
let l = [1, 2, 3, 4]
let d = {'1': 1, '2': l, '3': 3}
let l[1] = d
$put =(l == l)
$put =(d == d)
$put =(l != deepcopy(l))
$put =(d != deepcopy(d))]])
expect([[
1
1
0
0]])
end)
it('compare complex recursively linked list and dict', function()
source([[
let l = []
call add(l, l)
let dict4 = {"l": l}
call add(dict4.l, dict4)
let lcopy = deepcopy(l)
let dict4copy = deepcopy(dict4)
$put =(l == lcopy)
$put =(dict4 == dict4copy)]])
expect([[
1
1]])
end)
it('pass the same list to extend()', function()
source([[
let l = [1, 2, 3, 4, 5]
call extend(l, l)
$put =string(l)]])
expect([=[
[1, 2, 3, 4, 5, 1, 2, 3, 4, 5]]=])
end)
it('pass the same dict to extend()', function()
source([[
let d = { 'a': {'b': 'B'}}
call extend(d, d)
$put =string(d)]])
expect([[
{'a': {'b': 'B'}}]])
end)
it('pass the same dict to extend() with "error"', function()
source([[
" Copy dict from previous test.
let d = { 'a': {'b': 'B'}}
try
call extend(d, d, "error")
catch
$put =v:exception[:15] . v:exception[-1:-1]
endtry
$put =string(d)]])
expect([[
Vim(call):E737: a
{'a': {'b': 'B'}}]])
end)
it('test for range assign', function()
source([[
let l = [0]
let l[:] = [1, 2]
$put =string(l)]])
expect([=[
[1, 2]]=])
end)
it('vim patch 7.3.637', function()
execute('let a = "No error caught"')
execute('try')
execute(' foldopen')
execute('catch')
execute(" let a = matchstr(v:exception,'^[^ ]*')")
execute('endtry')
feed('o<C-R>=a<CR><esc>')
execute('lang C')
execute('redir => a')
-- The test failes if this is not in one line.
execute("try|foobar|catch|let a = matchstr(v:exception,'^[^ ]*')|endtry")
execute('redir END')
feed('o<C-R>=a<CR><esc>')
expect([[
Vim(foldopen):E490:
Error detected while processing :
E492: Not an editor command: foobar|catch|let a = matchstr(v:exception,'^[^ ]*')|endtry
]])
end)
end)