On 18.08.2023 02:01, Benjamin Esham wrote:

Janis Papanagnou wrote:

On 8/7/23 4:34 PM, Janis Papanagnou wrote:

Is there some Vim syntax file existing that handles a contemporary
Kornshell syntax (ksh93u+) correctly, i.e. without displaying valid
ksh93 constructs as errors (as the existing sh.vim does[*])?

Have you tried the zsh syntax highlighting (:set filetype=zsh)? I tried
these two constructs and neither was marked as an error.

I thought that I had tried that with zsh syntax in the past...

Zsh supports a fairly large subset of ksh syntax and semantics,[1][2] so I'd imagine that a lot of your scripts would be highlighted in a reasonable way by the zsh syntax file. (If anything, you might run into problems where ksh syntax errors *aren't* flagged because they're valid in zsh.)

...but upon retrying now the result is indeed very good.

The only thing is that my (k)sh syntax file supports embedded awk
scripts so that both, ksh and awk, are highlighted accordingly.
The zsh syntax does not support that feature, the whole awk program
is marked monochrome as an undifferentiated string. It may be that
this embedded syntax feature had been added later (it was probably
contributed by someone in the shell and/or awk newsgroup). (I'll
have a look into that, but I'm no expert in vim's syntax language,
so I have to see what I can make of it.)

Hope this helps,

Yes, thanks.

Janis

Benjamin

[1] At least that's my impression as a zsh user but ksh non-user.

[2] I don't know whether the ksh emulation ever covered 100% of ksh syntax
and semantics, and even if it did in the past, ksh may have evolved
since then. I am far from an expert here :-)

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On 18/08/2023 00:47, Janis Papanagnou wrote:

On 18.08.2023 02:01, Benjamin Esham wrote:

Janis Papanagnou wrote:

The only thing is that my (k)sh syntax file supports embedded awk
scripts so that both, ksh and awk, are highlighted accordingly.
The zsh syntax does not support that feature, the whole awk program
is marked monochrome as an undifferentiated string. It may be that
this embedded syntax feature had been added later (it was probably contributed by someone in the shell and/or awk newsgroup). (I'll
have a look into that, but I'm no expert in vim's syntax language,
so I have to see what I can make of it.)

Check `:h sh-awk`:


*sh-embed* *sh-awk*
Sh: EMBEDDING LANGUAGES~

You may wish to embed languages into sh. I'll give an example courtesy of
Lorance Stinson on how to do this with awk as an example. Put the following
file into $HOME/.vim/after/syntax/sh/awkembed.vim: >

[code]


This code will then let the awk code in the single quotes: >
awk '...awk code here...'
be highlighted using the awk highlighting syntax. Clearly this may be
extended to other languages.


The awkembed.vim ball may be changed to be read after ksh syntax, I reckon.

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On 20.09.2023 14:50, castAway wrote:

[ awk syntax within ksh syntax highlighting ]

Check `:h sh-awk`:
[...]
file into $HOME/.vim/after/syntax/sh/awkembed.vim: >

[code]

This code will then let the awk code in the single quotes: >
awk '...awk code here...'
be highlighted using the awk highlighting syntax. Clearly this may be
extended to other languages.
[...]

Thanks! :-)

Janis

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On 20.09.2023 20:47, Janis Papanagnou wrote:

On 20.09.2023 14:50, castAway wrote:

[ awk syntax within ksh syntax highlighting ]

Check `:h sh-awk`:
[...]
file into $HOME/.vim/after/syntax/sh/awkembed.vim: >

[code]

This code will then let the awk code in the single quotes: >
awk '...awk code here...'
be highlighted using the awk highlighting syntax. Clearly this may be
extended to other languages.
[...]

Thanks! :-)

Upthread I noted I have problems with new ksh syntax constructs, e.g.
in (( count++ )) the final closing parenthesis is market as error.
This was the primary concern of my (original) post.

The suggestion was - granted, it's a kludge - to set syntax to 'zsh'
(instead of 'sh'). This changed the coloring slightly but it worked
as as far as such constructs were not any more marked as errors. Fine.

The awkembed.vim suggestion now doesn't work correctly with the other
syntax issue; now either awk programs have a correct coloring but I
see those spurious syntax errors (with syntax=sh and awkembed.vim) or
I see no spurious errors but the whole awk program is uncolored (with syntax=zsh).

It would be nice to have a solution that works correctly for both
requirements.

I tried to install a $HOME/.vim/after/syntax/zsh/awkembed.vi for zsh
but obviously this is not how this is supposed to work.

Any idea or how to fix both issues reliably (not just one or the other)?

Janis

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On 20/09/2023 16:20, Janis Papanagnou wrote:

On 20.09.2023 20:47, Janis Papanagnou wrote:

On 20.09.2023 14:50, castAway wrote:

[ awk syntax within ksh syntax highlighting ]

I tried to install a $HOME/.vim/after/syntax/zsh/awkembed.vi for zsh
but obviously this is not how this is supposed to work.

Any idea or how to fix both issues reliably (not just one or the other)?

Janis

I beg your pardon but awk syntax does work for me with zsh (I just set it up today).

Note that the file path you wrote is:

$HOME/.vim/after/syntax/zsh/awkembed.vi

Shouldn't that end with .vim?

Also note that I use DrChip's Vim Colorscheme astronaut.vba.gz.

Maybe try changing your colourscheme?

Best regards,
JSN

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