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patch 8.2.3913: help for expressions does not mention Vim9 syntax

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Problem:    Help for expressions does not mention Vim9 syntax.
Solution:   Add the rules for Vim9 to the expression help.  Rename functions
            to match the help.
This commit is contained in:
Bram Moolenaar
2021-12-27 15:39:57 +00:00
parent bf7ff61af4
commit 5da36052a4
4 changed files with 203 additions and 124 deletions
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20
runtime/doc/vim9.txt
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@ -1,4 +1,4 @@
*vim9.txt* For Vim version 8.2. Last change: 2021 Dec 26
*vim9.txt* For Vim version 8.2. Last change: 2021 Dec 27
VIM REFERENCE MANUAL by Bram Moolenaar
@ -81,7 +81,7 @@ script and `:def` functions; details are below:
echo "hello "
.. yourName
.. ", how are you?"
- White space is required in many places.
- White space is required in many places to improve readability.
- Assign values without `:let`, declare variables with `:var`: >
var count = 0
count += 3
@ -94,8 +94,8 @@ script and `:def` functions; details are below:
def CallMe(count: number, message: string): bool
- Call functions without `:call`: >
writefile(['done'], 'file.txt')
- You cannot use `:xit`, `:t`, `:k`, `:append`, `:change`, `:insert`, `:open`,
and `:s` or `:d` with only flags.
- You cannot use old Ex commands `:xit`, `:t`, `:k`, `:append`, `:change`,
`:insert`, `:open`, and `:s` or `:d` with only flags.
- You cannot use curly-braces names.
- A range before a command must be prefixed with a colon: >
:%s/this/that
@ -353,7 +353,7 @@ default to the number zero.
In Vim9 script `:let` cannot be used. An existing variable is assigned to
without any command. The same for global, window, tab, buffer and Vim
variables, because they are not really declared. They can also be deleted
variables, because they are not really declared. Those can also be deleted
with `:unlet`.
`:lockvar` does not work on local variables. Use `:const` and `:final`
@ -597,7 +597,7 @@ Also when confused with the start of a command block: >
Automatic line continuation ~
*vim9-line-continuation*
In many cases it is obvious that an expression continues on the next line. In
those cases there is no need to prefix the line with a backslash (see
|line-continuation|). For example, when a list spans multiple lines: >
@ -775,7 +775,7 @@ No curly braces expansion ~
Dictionary literals ~
*vim9-literal-dict*
Traditionally Vim has supported dictionary literals with a {} syntax: >
let dict = {'key': value}
@ -865,7 +865,7 @@ first if needed.
Conditions and expressions ~
*vim9-boolean*
Conditions and expressions are mostly working like they do in other languages.
Some values are different from legacy Vim script:
value legacy Vim script Vim9 script ~
@ -917,8 +917,8 @@ always converted to string: >
'hello ' .. 123 == 'hello 123'
'hello ' .. v:true == 'hello true'
Simple types are string, float, special and bool. For other types |string()|
can be used.
Simple types are Number, Float, Special and Bool. For other types |string()|
should be used.
*false* *true* *null*
In Vim9 script one can use "true" for v:true, "false" for v:false and "null"
for v:null. When converting a boolean to a string "false" and "true" are