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Item6360: FilterPlugin stops unexpectedly, "eats" content

Item Form Data

AppliesTo: Component: Priority: CurrentState: WaitingFor: TargetRelease ReleasedIn
Extension FilterPlugin Normal New   n/a  

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Summary:
Reported By:
Codebase:
Applies To:
Component:
Priority:
Current State:
Waiting For:
Target Release:
Released In:
 

Detail

This problem occurs on our corporate TWiki installation. We are using [Plugins/FilterPlugin][FilterPlugin]] v1.51 (the latest).

FilterPlugin works as expected up to the last possible match. After that, all trailing text disappears entirely.

In the example below, the text , IP datagrams on Avian Carriers -- if you can see this, Twiki is no longer eating text that I put here. vanishes after rendering.

The Code

---+++ protocol specs
%STARTSUBST{pattern="RFC ?(\d+)" format="[[http://www.rfc-editor.org/rfc/rfc$1.txt][RFC$1]]"}%
   * RFC 2971, IMAP =ID= Extension (the moral equivalent of =User-Agent=)
   * RFC 3501, the IMAP 4 base spec, replacing RFC 2060 and RFC 1730
   * RFC 5530, IMAP Response Codes, which improves the machine-readable IMAP errors
   * RFC 4315, =UIDPLUS= extension, which replaces RFC 2359
   * RFC 4422, SASL, the "Simple" Authentication and Security Layer, is really a generalization of the IMAP4 =AUTHENTICATE= command.
   * RFC 1149, IP datagrams on Avian Carriers -- if you can see this, Twiki is no longer eating text that I put here.
%STOPSUBST%

Results (screenshot)
Item6360Picture1.png

Workaround

The workaround is to force one final pattern match after the real data.

---+++ protocol specs
%STARTSUBST{pattern="RFC ?(\d+)" format="[[http://www.rfc-editor.org/rfc/rfc$1.txt][RFC$1]]"}%
   * RFC 2971, IMAP =ID= Extension (the moral equivalent of =User-Agent=)
   * RFC 3501, the IMAP 4 base spec, replacing RFC 2060 and RFC 1730
   * RFC 5530, IMAP Response Codes, which improves the machine-readable IMAP errors
   * RFC 4315, =UIDPLUS= extension, which replaces RFC 2359
   * RFC 4422, SASL, the "Simple" Authentication and Security Layer, is really a generalization of the IMAP4 =AUTHENTICATE= command.
   * RFC 1149, IP datagrams on Avian Carriers -- if you can see this, Twiki is no longer eating text that I put here.
<!-- RFC 0  workaround for SUBST bug -->
%STOPSUBST%

Results (screenshot)
Item6360Picture2.png

-- TWiki:Main/VickiBrown - 27 Oct 2009

ItemTemplate
Summary FilterPlugin stops unexpectedly, "eats" content
ReportedBy TWiki:Main.VickiBrown
Codebase 4.2.4
SVN Range TWiki-5.0.0, Sun, 27 Sep 2009, build 18153
AppliesTo Extension
Component FilterPlugin
Priority Normal
CurrentState New
WaitingFor

Checkins

TargetRelease n/a
ReleasedIn

Topic attachments
I Attachment History Action Size Date Who Comment
PNGpng Item6360Picture1.png r1 manage 26.9 K 2009-10-27 - 16:14 VickiBrown screenshot
PNGpng Item6360Picture2.png r1 manage 30.4 K 2009-10-27 - 16:16 VickiBrown screenshot
Topic revision: r1 - 2009-10-27 - VickiBrown
 
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