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eval: Add special variables v:false, v:null, v:none

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ZyX
2016-01-31 01:25:00 +03:00
parent 18903bd9b8
commit d70a322c40
11 changed files with 441 additions and 116 deletions
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32
runtime/doc/eval.txt
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@@ -1418,6 +1418,13 @@ v:exception The value of the exception most recently caught and not
:endtry
< Output: "caught oops".
*v:false* *false-variable*
v:false Special value used to put "false" in JSON and msgpack. See
|jsonencode()|. This value is converted to "false" when used
as a String (e.g. in |expr5| with string concatenation
operator) and to zero when used as a Number (e.g. in |expr5|
or |expr7| when used with numeric operators).
*v:fcs_reason* *fcs_reason-variable*
v:fcs_reason The reason why the |FileChangedShell| event was triggered.
Can be used in an autocommand to decide what to do and/or what
@@ -1557,6 +1564,20 @@ v:msgpack_types Dictionary containing msgpack types used by |msgpackparse()|
(not editable) empty lists. To check whether some list is one
of msgpack types, use |is| operator.
*v:null* *null-variable*
v:null Special value used to put "null" in JSON and NIL in msgpack.
See |jsonencode()|. This value is converted to "null" when
used as a String (e.g. in |expr5| with string concatenation
operator) and to zero when used as a Number (e.g. in |expr5|
or |expr7| when used with numeric operators).
*v:none* *none-variable*
v:none Special value used to put an empty item in JSON. See
|jsonencode()|. This value is converted to "none" when used
as a String (e.g. in |expr5| with string concatenation
operator) and to zero when used as a Number (e.g. in |expr5|
or |expr7| when used with numeric operators).
*v:oldfiles* *oldfiles-variable*
v:oldfiles List of file names that is loaded from the |shada| file on
startup. These are the files that Vim remembers marks for.
@@ -1722,6 +1743,13 @@ v:throwpoint The point where the exception most recently caught and not
:endtry
< Output: "Exception from test.vim, line 2"
*v:true* *true-variable*
v:true Special value used to put "true" in JSON and msgpack. See
|jsonencode()|. This value is converted to "true" when used
as a String (e.g. in |expr5| with string concatenation
operator) and to one when used as a Number (e.g. in |expr5| or
|expr7| when used with numeric operators).
*v:val* *val-variable*
v:val Value of the current item of a |List| or |Dictionary|. Only
valid while evaluating the expression used with |map()| and
@@ -4832,8 +4860,8 @@ msgpackdump({list}) {Nvim} *msgpackdump()*
(dictionary with zero items is represented by 0x80 byte in
messagepack).
Limitations: *E951* *E952*
1. |Funcref|s cannot be dumped.
Limitations: *E951* *E952* *E953*
1. |Funcref|s and |v:none| cannot be dumped.
2. Containers that reference themselves cannot be dumped.
3. Dictionary keys are always dumped as STR strings.
4. Other strings are always dumped as BIN strings.