Re: [vile] setv for buffer-local variables?

[Thomas Dickey]

On Fri, Nov 24, 2017 at 01:59:56PM -0500, Wayne Cuddy wrote:
> 
> I have a procedure that toggles boolean variables using setv. The
> problem with this is that setv seems to adjust that corresponding
> variable in all buffers.  What is the equivalent setl in vile's macro
> language?
> 
> This is the offending line:
>     setv &indirect $1 &not &indirect %mode
> 
> Note the name of the variable is determined/evaluated at execution
> time using &indirect.  Replacing setv with setl does not work.
> 
> Or is there a way to build up a string and execute it... something
> like sh's eval command?

yes - it's not pretty, but you can use &cat for concatenating strings.
It would look something like this:

     eval &cat "setv &indirect" &cat $1 "&not &indirect %mode"

it-would-be-nice-if-vile-implemented "&sprintf"
 
> I see execute-string exists but it doesn't seem to be callable from
> the macro language?

I use eval (execute-string) in this macro in vileinit.rc:

; generalized from ToggleList, for any boolean mode
store-procedure ToggleMode mode='Mode'
        ~local %value
        setv %value &local $1
        ~if &seq "TRUE" %value
                eval &cat "setl no" $1
        ~elseif &seq "FALSE" %value
                eval &cat "setl " $1
        ~else
                write-message "Not a boolean mode"
        ~endif
~endm

-- 
Thomas E. Dickey <address@hidden>
https://invisible-island.net
ftp://ftp.invisible-island.net

signature.asc
Description: Digital signature