Re: [Help-source-highlight] conditional highlight (without losing other definitions)

[Lorenzo Bettini]

On 02/02/2012 06:09 PM, Federico Bruni wrote:
> Hi,
>
> I'm trying to find a smarter way to highlight some strings:
>
> All the "\strings" inside \markup{ ... } should have a different colour
> of \strings occurences in other parts of the input.
> How can I achieve that in a smart way (i.e. without using a list of all
> the \strings which can occur inside a \markup{} block)?
>
> I want to preserve all the other highlighting definitions. Maybe
> state|environment is not the right tool? Because in Doc 7.9 it says:
>
> "When entering a state/environment, however, the definitions given
> outside the state/environment are not matched. "
>
> Let's do an example:
>
> \markup {
> \override #'(box-padding . 1.0) \override #'(baseline-skip . 2.7) \box
> \center-column {
> \small \line { Sheet music from \with-url #"http://www.MutopiaProject.org";
> \line { \teeny www. \hspace #-0.5 MutopiaProject \hspace #-0.5 \teeny
> .org \hspace #0.5 }
> }
> }
> }
>
> I want to match only: \override \box \center-column \small \line
> \with-url \teeny \hspace
>
> The following environment:
>
> environment markup delim '\\markup\s*\{' "}" multiline nested begin
> environment markup delim "{" "}" multiline nested begin
> markup_command = '\\[[:alpha:]-]+'
> end
> end
>
> can see the relevant block and highlight the \strings correctly, but at
> the same time it breaks something, in particular some elements lose
> their highlighting (as documentations says):
>
> 1) \markup
> 2) {}
> 3) #......
>
> So I guess that state|environment is not the solution here. Or I'm
> missing something?

these elements lose highlighting since they are in a new environment as 
you said, but you can put in the environment the definitions that you 
want to be valid; instead of repeating them you might want to use 
variables, for instance the definition for #... can be put in a variable 
and have the definition outside the environment and inside...

for instance

vardef SCHEME_VALUE = '##(t|f)', '#{1,2}\'?[[:alnum:]\.:+-]+'

scheme_value = $SCHEME_VALUE

environment markup delim '\\markup\s*\{' "}" multiline nested begin
  environment markup delim "{" "}" multiline nested begin
    scheme_value = $SCHEME_VALUE
    markup_command = '\\[[:alpha:]-]+'
  end
end

though, from what I understand, what you said, it should be

environment markup delim '\\markup\s*\{' "}" multiline nested begin
  scheme_value = $SCHEME_VALUE
  markup_command = '\\[[:alpha:]-]+'
  environment markup delim "{" "}" multiline nested begin
    scheme_value = $SCHEME_VALUE
    markup_command = '\\[[:alpha:]-]+'
  end
end

cheers
        Lorenzo


--
Lorenzo Bettini, PhD in Computer Science, DI, Univ. Torino
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