* [NTG-context] regular expression as lua pattern
@ 2024-05-28 16:12 Pablo Rodriguez via ntg-context
2024-05-28 16:25 ` [NTG-context] " Tomáš Hála
0 siblings, 1 reply; 7+ messages in thread
From: Pablo Rodriguez via ntg-context @ 2024-05-28 16:12 UTC (permalink / raw)
To: ConTeXt users; +Cc: Pablo Rodriguez
Dear list,
I have the following sample:
\starttext
\startTEXpage[pagestate=start, offset=1em]
\startluacode
local str = "this is that"
context(str:match("(this|these)"))
\stopluacode
\stopTEXpage
\stoptext
In short, I would like to know whether it is possible to have the
regular expression (this|these) as a Lua pattern.
I mean, I need complete strings and I haven’t found the way to do it.
Many thanks for your help,
Pablo
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 7+ messages in thread
* [NTG-context] Re: regular expression as lua pattern
2024-05-28 16:12 [NTG-context] regular expression as lua pattern Pablo Rodriguez via ntg-context
@ 2024-05-28 16:25 ` Tomáš Hála
2024-05-28 16:40 ` Pablo Rodriguez via ntg-context
2024-05-28 18:06 ` Hans Hagen
0 siblings, 2 replies; 7+ messages in thread
From: Tomáš Hála @ 2024-05-28 16:25 UTC (permalink / raw)
To: Pablo Rodriguez via ntg-context; +Cc: Pablo Rodriguez
Hi Pablo,
unfortunately, that it is not possible:
http://lua-users.org/wiki/PatternsTutorial, section Limitations.
The best,
Tomáš
On Tue, May 28, 2024 at 06:12:51PM +0200, Pablo Rodriguez via ntg-context wrote:
> Dear list,
>
> I have the following sample:
>
> \starttext
> \startTEXpage[pagestate=start, offset=1em]
> \startluacode
> local str = "this is that"
> context(str:match("(this|these)"))
> \stopluacode
> \stopTEXpage
> \stoptext
>
> In short, I would like to know whether it is possible to have the
> regular expression (this|these) as a Lua pattern.
>
> I mean, I need complete strings and I haven’t found the way to do it.
>
> Many thanks for your help,
>
> Pablo
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive : https://github.com/contextgarden/context
> wiki : https://wiki.contextgarden.net
> ___________________________________________________________________________________
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 7+ messages in thread
* [NTG-context] Re: regular expression as lua pattern
2024-05-28 16:25 ` [NTG-context] " Tomáš Hála
@ 2024-05-28 16:40 ` Pablo Rodriguez via ntg-context
2024-05-28 18:06 ` Hans Hagen
1 sibling, 0 replies; 7+ messages in thread
From: Pablo Rodriguez via ntg-context @ 2024-05-28 16:40 UTC (permalink / raw)
To: ntg-context; +Cc: Pablo Rodriguez
On 5/28/24 18:25, Tomáš Hála wrote:
> Hi Pablo,
>
> unfortunately, that it is not possible:
>
> http://lua-users.org/wiki/PatternsTutorial, section Limitations.
Many thanks for your reply, Tomáš.
It is clear to me now.
Pablo
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 7+ messages in thread
* [NTG-context] Re: regular expression as lua pattern
2024-05-28 16:25 ` [NTG-context] " Tomáš Hála
2024-05-28 16:40 ` Pablo Rodriguez via ntg-context
@ 2024-05-28 18:06 ` Hans Hagen
2024-05-29 11:00 ` Henning Hraban Ramm
2024-05-29 15:14 ` Pablo Rodriguez via ntg-context
1 sibling, 2 replies; 7+ messages in thread
From: Hans Hagen @ 2024-05-28 18:06 UTC (permalink / raw)
To: ntg-context
On 5/28/2024 6:25 PM, Tomáš Hála wrote:
> Hi Pablo,
>
> unfortunately, that it is not possible:
>
> http://lua-users.org/wiki/PatternsTutorial, section Limitations.
\starttext
\startTEXpage[pagestate=start, offset=1em]
\startluacode
local pat = (lpeg.Cmt(lpeg.P("this") + lpeg.P("that"),
function(str,_,s)
context(s)
return #str
end) + lpeg.P(1))^1
lpeg.match(pat,"how about this being that")
local pat = (lpeg.Cmt(lpeg.oneof({ "this", "that" }),
function(str,_,s)
context(s)
return #str
end) + lpeg.P(1))^1
lpeg.match(pat,"how about this being that")
\stopluacode
\stopTEXpage
\stoptext
> On Tue, May 28, 2024 at 06:12:51PM +0200, Pablo Rodriguez via ntg-context wrote:
>> Dear list,
>>
>> I have the following sample:
>>
>> \starttext
>> \startTEXpage[pagestate=start, offset=1em]
>> \startluacode
>> local str = "this is that"
>> context(str:match("(this|these)"))
>> \stopluacode
>> \stopTEXpage
>> \stoptext
>>
>> In short, I would like to know whether it is possible to have the
>> regular expression (this|these) as a Lua pattern.
>>
>> I mean, I need complete strings and I haven’t found the way to do it.
>>
>> Many thanks for your help,
>>
>> Pablo
>> ___________________________________________________________________________________
>> If your question is of interest to others as well, please add an entry to the Wiki!
>>
>> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
>> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
>> archive : https://github.com/contextgarden/context
>> wiki : https://wiki.contextgarden.net
>> ___________________________________________________________________________________
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
> webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
> archive : https://github.com/contextgarden/context
> wiki : https://wiki.contextgarden.net
> ___________________________________________________________________________________
--
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 7+ messages in thread
* [NTG-context] Re: regular expression as lua pattern
2024-05-28 18:06 ` Hans Hagen
@ 2024-05-29 11:00 ` Henning Hraban Ramm
2024-05-29 15:16 ` Pablo Rodriguez via ntg-context
2024-05-29 15:14 ` Pablo Rodriguez via ntg-context
1 sibling, 1 reply; 7+ messages in thread
From: Henning Hraban Ramm @ 2024-05-29 11:00 UTC (permalink / raw)
To: ntg-context
Am 28.05.24 um 20:06 schrieb Hans Hagen:
> On 5/28/2024 6:25 PM, Tomáš Hála wrote:
>> Hi Pablo,
>>
>> unfortunately, that it is not possible:
>>
>> http://lua-users.org/wiki/PatternsTutorial, section Limitations.
>
> \starttext
> \startTEXpage[pagestate=start, offset=1em]
> \startluacode
> local pat = (lpeg.Cmt(lpeg.P("this") + lpeg.P("that"),
> function(str,_,s)
> context(s)
> return #str
> end) + lpeg.P(1))^1
> lpeg.match(pat,"how about this being that")
>
> local pat = (lpeg.Cmt(lpeg.oneof({ "this", "that" }),
> function(str,_,s)
> context(s)
> return #str
> end) + lpeg.P(1))^1
> lpeg.match(pat,"how about this being that")
> \stopluacode
> \stopTEXpage
> \stoptext
See also Taco’s introduction to LPEG in
https://articles.contextgarden.net/journal/2019/77-98.pdf
Hraban
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 7+ messages in thread
* [NTG-context] Re: regular expression as lua pattern
2024-05-28 18:06 ` Hans Hagen
2024-05-29 11:00 ` Henning Hraban Ramm
@ 2024-05-29 15:14 ` Pablo Rodriguez via ntg-context
1 sibling, 0 replies; 7+ messages in thread
From: Pablo Rodriguez via ntg-context @ 2024-05-29 15:14 UTC (permalink / raw)
To: ntg-context; +Cc: Pablo Rodriguez
On 5/28/24 20:06, Hans Hagen wrote:
> On 5/28/2024 6:25 PM, Tomáš Hála wrote:
>> Hi Pablo,
>>
>> unfortunately, that it is not possible:
>>
>> http://lua-users.org/wiki/PatternsTutorial, section Limitations.
>
> \starttext
> \startTEXpage[pagestate=start, offset=1em]
> \startluacode
> local pat = (lpeg.Cmt(lpeg.P("this") + lpeg.P("that"),
> function(str,_,s)
> context(s)
> return #str
> end) + lpeg.P(1))^1
> lpeg.match(pat,"how about this being that")
>
> local pat = (lpeg.Cmt(lpeg.oneof({ "this", "that" }),
> function(str,_,s)
> context(s)
> return #str
> end) + lpeg.P(1))^1
> lpeg.match(pat,"how about this being that")
> \stopluacode
> \stopTEXpage
> \stoptext
Many thanks for your reply, Hans.
I will have to study it becasue LPEGs is new stuff for me.
Many thanks for your help,
Pablo
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 7+ messages in thread
* [NTG-context] Re: regular expression as lua pattern
2024-05-29 11:00 ` Henning Hraban Ramm
@ 2024-05-29 15:16 ` Pablo Rodriguez via ntg-context
0 siblings, 0 replies; 7+ messages in thread
From: Pablo Rodriguez via ntg-context @ 2024-05-29 15:16 UTC (permalink / raw)
To: ntg-context; +Cc: Pablo Rodriguez
On 5/29/24 13:00, Henning Hraban Ramm wrote:
> [...]
> See also Taco’s introduction to LPEG in
> https://articles.contextgarden.net/journal/2019/77-98.pdf
Many thanks for the reference, Hraban.
I need to start digesting that to learn about LPEG.
Pablo
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2024-05-29 15:19 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-05-28 16:12 [NTG-context] regular expression as lua pattern Pablo Rodriguez via ntg-context
2024-05-28 16:25 ` [NTG-context] " Tomáš Hála
2024-05-28 16:40 ` Pablo Rodriguez via ntg-context
2024-05-28 18:06 ` Hans Hagen
2024-05-29 11:00 ` Henning Hraban Ramm
2024-05-29 15:16 ` Pablo Rodriguez via ntg-context
2024-05-29 15:14 ` Pablo Rodriguez via ntg-context
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).