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List:       kwrite-devel
Subject:    matching the newline character...
From:       Franchin Matteo <fnch () libero ! it>
Date:       2005-03-06 15:22:04
Message-ID: 1110122540.28209.6.camel () asus ! home
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Hi all,
I'm developing the syntax highlighting for fortran and I'm trying to solve the \
problem of line continuation. In fortran (90/95) you can continue a line with an \
amperstand '&', as in the following example:

real(1) r   ! r is a real variable of kind 1
r = &       ! <-- this statement doesn't end here!
 real(1)    ! real(1) is a function that returns 1 converted to real

I highlight these lines using this idea: if real(...) is at the beginning of the \
line, it is a declaration, otherwise it is a function. The problem is that a \
statement can be continued, so this idea doesn't work in cases like the previous. The \
simpler thing to do is this:

<context attribute="Normal Text" lineEndContext="#stay" name="first_line" >
  <RegExpr attribute="Data Type" context="#stay" String="^\s*real[(][^)]*[)]" \
insensitive="TRUE"/>  <RegExpr attribute="Function" context="#stay" String="real" \
insensitive="TRUE"/>  <RegExpr attribute="Keyword" context="next_line" \
String="&amp;\s*\n"/> </context>

<context attribute="Normal Text" lineEndContext="#pop" name="next_line" >
  <RegExpr attribute="Function" context="#stay" String="real" insensitive="TRUE"/>
  <RegExpr attribute="Keyword" context="#stay" String="&amp;\s*\n"/>
</context>

But this doesn't work: kate doesn't match the newline character (\n) in the regexp \
"&amp;\s*\n". I tried several other solutions, but none of them works (I also tried \
to use lineBeginContext, but it seems that kate simply ignores it!).

I need help: is there a rule that matches the '\n' and eats it?
It would be very nice something like that:

<RegExpr attribute="..." context="..." String="...$$"/>

where the $$ in the regexp is very similar to the assertion $, but tells kate to eat \
the newline character. With this my problem will be solved!
Thanks


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