On Wed, 2 Sep 2020 10:47:05 +0000, Robert Prins wrote:
>More than 20 years ago I wrote an edit macro "EDOEND", that lets me exclude, in
>PL/I source, all statements other than
>
>'PACKAGE',
>'PROC',
>'PROCEDURE',
>'DO',
>'BEGIN',
>'SELECT', and
>'END'
>
This seems to go hand-in-hand with HILITE. Does it understand that
PL/I has no reserved words and that any of the above might be merely
identifiers?
"Language and logic hiliting is not supported for ASCII or UTF-8 editing
sessions and the HILITE command is not available during these edit sessions."
>and a few days ago, using it again, I realised that it could benefit from
>adding
>a bit of Doug Nadel magic to it, as the '_' character is not part of the word
>character set, and as such the macro will happily un-exclude identifiers like
>"list_end" etc.
>
Might this be extended to other languages such as Rexx, C, bash, ...
which have different lexical syntax? '{', '(', ')', and '}' might take the
function of DO and END. And FORTRAN, where blanks are ignored?
>However, before his MVS goodies page was removed, Doug had put a little routine
>on it to include characters into the word character set:
> ...
>tldp = ptr(ptr(24 + ptr(112 + ptr(132 + ptr(540)))))
>tablep = ptr(24 + ptr(20 + ptr(96 + ptr(56 + tldp))))
>
>do while wordchars <> ""
> parse var wordchars char 2 wordchars
> call storage d2x(tablep + c2d(char)),1,"00"x
> ...
Ouch! Is this zapping vendor code? How robust is it with respect to
vendor updates? I see 8 undocumented hard-coded constants.
>/* Add the characters you want to be part of a word below. This */
>/* macro only needs to be run once per ISPF session but works fine */
>/* as an initial macro or session macro (see manual for ZUSERMAC) */
>
Unfortunate choice of scope (but I suppose there was no choice.)
The user can't support different languages in different splits.
I'd rather see an RFE allowing the user to specify the definition of
WORD, perhaps as a regular expression. But I wouldn't hold my
breath.
-- gil
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