Perl language syntax highlighting troubles (bug or limitation ?)

Ekopalypse

No double Windows at a time like in “compare” or so.

Ok, then it seems we have learned that the id is not always the same.
Gimme a second to see what needs to be changed to use editor.getLexerLanguage() instead.

Gilles Maisonneuve

all right, take your time.
i’ll be there late tonight.

about DWservice, it’s GNU, hosted in DE I guess, not smthg like Teamviewer. But perhaps you are right, one should always be paranoiac.

Ekopalypse

@Gilles-Maisonneuve

I’m living in DE but have to admit, that I haven’t heard of DWservice before, shame on me :-)

Changes
line 9 to BUILTIN_LEXER = 'perl'
line 111 self.lexer_name = BUILTIN_LEXER.lower()
line 219 to self.doc_is_of_interest = True if editor.getLexerLanguage().lower() == self.lexer_name else False

As python is very picky about whitespaces make sure that you either use
spaces or tabs for indentation only. Best python practice is to set
Settings->Preferences->Language->TabSettings->Python
Tab size = 4 and check replace by space checkbox
(if this isn’t your default setting, of course)

Gilles Maisonneuve

@Ekopalypse

Oops, I must have made some mistakes but can’t find where… Here is the console log:

Traceback (most recent call last):
  File "C:\Users\gm\AppData\Roaming\Notepad++\plugins\Config\PythonScript\scripts\startup.py", line 1, in <module>
    import EnhancePerlLexer
  File "C:\Users\gm\AppData\Roaming\Notepad++\plugins\Config\PythonScript\scripts\EnhancePerlLexer.py", line 283, in <module>
    EnhanceBuiltinLexer().main()
  File "C:\Users\gm\AppData\Roaming\Notepad++\plugins\Config\PythonScript\scripts\EnhancePerlLexer.py", line 280, in main
    self.on_bufferactivated(None)
  File "C:\Users\gm\AppData\Roaming\Notepad++\plugins\Config\PythonScript\scripts\EnhancePerlLexer.py", line 237, in on_bufferactivated
    self.check_lexer()
  File "C:\Users\gm\AppData\Roaming\Notepad++\plugins\Config\PythonScript\scripts\EnhancePerlLexer.py", line 224, in check_lexer
    self.doc_is_of_interest = True if editor.getLexerLanguage().lower() == self.lexer_name else False
AttributeError: 'EnhanceBuiltinLexer' object has no attribute 'lexer_name'
Python 2.7.15 (v2.7.15:ca079a3ea3, Apr 30 2018, 16:30:26) [MSC v.1500 64 bit (AMD64)]
Initialisation took 343ms
Ready.

Traceback (most recent call last):
  File "C:\Users\gm\AppData\Roaming\Notepad++\plugins\Config\PythonScript\scripts\EnhancePerlLexer.py", line 73, in <module>
    EnhanceBuiltinLexer().main()
  File "C:\Users\gm\AppData\Roaming\Notepad++\plugins\Config\PythonScript\scripts\EnhancePerlLexer.py", line 280, in main
    self.on_bufferactivated(None)
  File "C:\Users\gm\AppData\Roaming\Notepad++\plugins\Config\PythonScript\scripts\EnhancePerlLexer.py", line 237, in on_bufferactivated
    self.check_lexer()
  File "C:\Users\gm\AppData\Roaming\Notepad++\plugins\Config\PythonScript\scripts\EnhancePerlLexer.py", line 224, in check_lexer
    self.doc_is_of_interest = True if editor.getLexerLanguage().lower() == self.lexer_name else False
AttributeError: 'EnhanceBuiltinLexer' object has no attribute 'lexer_name'

Line numbers don’t match because I already commented out some of your lines but kept them in the file, and duplicated them with my own changes. But I did do the changes at the places you told me to do them.

Ekopalypse

@Gilles-Maisonneuve

check line 111 - it defines the lexer_name

Gilles Maisonneuve

OOPS, yours :== self.lexer_name, mine :== self_lexer_name, I am really a dumb when dealing with OO programming, can’t realize that ‘self’ is the current object and of course separated by a dot.

Colour has changed for q* keywords and there text (black on dark blue, can’t read but now just need to ajust the colors).
No change for here docs, but don’t know if I properly set the colors, have to check.

Send you a screen copy in a few minutes.

Gilles Maisonneuve

@Ekopalypse

All right, nearly done: with the following regexp in your python code:

regexes[(1, (255,0,128))] = (r'\bq[rwqx]{0,1}\b([^\h]).*?\1|(\bq[rwqx]{0,1}\b\h+(\w).*?\3)', [0])
regexes[(2, (255,0,128))] = (r'\bq[rwqx]{0,1}\b\h*(\(.+?\)|\[.+?\]|\{.+?\})', [0])
regexes[(3, (0,0,0))] = (r'(?s)((<<)"*(\w+?)"*;.*?\3)', [2])
regexes[(4, (0,0,0))] = (r'(?s)((<<)\h+"(\w+?)";.*?\3)', [2,3])

I get the following colors:

q* colors OK, here docs no

Q* colors are good {well I might have an uggly taste in colors but at least they match ;-)) }

Would you have any clue about why the here docs= are still not handled properly ? They should be black, I think.

Ekopalypse

@Gilles-Maisonneuve

the regexes assumes double quotes and semicolon directly attached to EOT.
Like

print << "EOT";

--------------------- separation line ------------------

EOT

Is there a rule how this is specified?

Gilles Maisonneuve

I think I found why.
Your regexp says :
r'(?s)((<<)"*(\w+?)"*;.*?\3)'
would not it be better if :
r'(?s)(\h*(<<)\h*"*(\w+?)"*\h*;.*?\3)'

???

To answer your question:

Perl allows

<<TEXT,
<< TEXT
<<‘TEXT’ / << ‘TEXT’
<<“TEXT” / << “TEXT”

meanings differ in each case…

Ekopalypse

To be honest - I’m not a regex expert at all :-D
If you, as a perl developer, say so I would absolutely believe it is :-)

Gilles Maisonneuve

@Ekopalypse

In your Python regexp, what’s the meaning of:

“\3”
“, [2]” and “[2,3]” ?

If I can understand what I think I could translate a Perl regex code into python (for this case at least).

Ekopalypse

What about using this
(?s)((<<)\h+(["|'])(\w+?)\3\h*;.*?\4)

Ekopalypse

is the boost:regex convention to denote match group 3
and
defines which match group actually should be painted

Like if you have:

r'(word1)(word2)(word3)', [2,3]

would mean that only word2 and word3 would be painted
whereas if you would specify

r'(word1)(word2)(word3)', [0]

everything would be colored.

Does this makes sense to you?

Gilles Maisonneuve

@Ekopalypse

I don’t understand your regexp syntax. Perhaps too ‘pythonized’ for me.

(?s) : what does it mean ? is it ‘s///’ ? or really a non capturing group of ‘s’ ???
\3 \4 : are they $3 $4, I don’t think as I can’t see a 4th accumulator

Ekopalypse

(?s) is a modifier telling the engine that the dot matches line endings
and yes, the engine uses \1 and $1

Here the link to the documentation - maybe easier for you.

Ekopalypse

ooppps

(?s)((<<)\h+(["|'])(\w+?)\3\h*;.*?\3)

:-D

Gilles Maisonneuve

This post is deleted!

Gilles Maisonneuve

@Ekopalypse

Ok
another one: in Python you must say ["|'] instead of Perl ["'] (‘either one of the set’) ? Is that what it means ?

Ekopalypse

No, afaik non-capturing group is (?:pattern)
This, (?s), just tells the engine that the dot . is matching
EOLs like \r\n - if I’m right.

Ekopalypse

Just for clarification, the python script does NOT use the python regex engine instead
it uses the one notepad++ offers, the boost::regex.
Yes, you can use the enumeration without the pipe but makes it more visible for me with
the pipe sign. Or is there a difference if used with pipe sign or without?