regexp problem

[ranny]

Hello,
I try regexp.
I've two problems

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( ranny ): .tcl regexp {\bworld\b} "the world is good"
<eggy> Tcl: 0

Why not matching?

This code

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( ranny ):  .tcl regexp {l(?=o)} color
<eggy> Tcl: 1

it's ok
but

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( ranny ): .tcl regexp {(?<=l)o} color
<eggy> Tcl error: couldn't compile regular expression pattern: quantifier operand invalid

??

thx

[demond]

\b is RE escape for backspace and you don't have backspace

(?=re) is positive lookahead, valid in AREs (advanced REs) only, and I very much doubt it's that what you had in mind

(?<= is RE error

[ranny]

ok,

You can just tell me how is $string for match this code please(an example)

Code: Select all

regexp {\bworld\b} $string

thx

[demond]

what do you want to match? describe with your own words, not with RE

[ranny]

Yes, i try with an example.

I want to match a string(with regexp) who contains the words "word" and "is".
In fact i don't want to match a word who contains the words.
"the word is simple"==>match
"this word "==>not match
"F**** is a badword"==>not match
......

thx

[demond]

Code: Select all

regexp word.*is $str

[ranny]

no demond,

it's not that.
I want that the code matches all string with "word" and "is". But it shouldn't match the words who contains "word" and "is"(badword,this,history...don't have matches).
I thought that to use \b was a solution to limit the word but it's not that.

If you can help me.

[greenbear]

did you try seperating them using space. eg. \s

[demond]

Code: Select all

[regexp {(^|\s+)word($|\s+)} $str] && [regexp {(^|\s+)is($|\s+)} $str]

[ranny]

ok

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regexp {(^word\s|\sword\s|\sword$)} $string

it works for one word.

1/there is simpler?

2/ if i want match two words

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regexp {(^word1\s|\sword1\s) (\sword2\s|\sword2$)} $string

don't match?
I want match the string with "word1 word2" or "word2 word1"
thx

[demond]

I gave you the solution, did you bother to test it at all?

[ranny]

erf,

sorry demond but we've post at the same time.Thx

[ranny]

Hello, another question,
If i want match "WOrd" or "word" or "worD"...
How to do it?
Thx

[greenbear]

Code: Select all

regexp -nocase { .....

[ranny]

Ahhhh,
It's what I had done but with an error
Thx