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Item5878: Identical headings lead to generation of non-unique anchors

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AppliesTo: Component: Priority: CurrentState: WaitingFor: TargetRelease ReleasedIn
Engine Render.pm Normal No Action Required   n/a  

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Applies To:
Current State:
Waiting For:
Target Release:
Released In:


When using identical headings (e.g., derived from some kind of template), the automatically generated anchors will be non-unique.

A prominent example is the TWikiReleaseNotes04x02 topic as shipped with TWiki 4.2.1 which contains redundant Fixes and Enhancements sections (for 4.2.0 and 4.2.1, respectively). Using Firefox3, it is not possible to select the newer subsections from the TOC (NB the browser behaviour in this case is unspecified).

-- TWiki:Main/MarkusUeberall - 04 Aug 2008

Duplicate of Item1607 and Item5205

As a work around you can put a unique html comment after identical head lines. The URL generated by the TOC includes these characters

---++ Some header<!-- number1 -->

---++ Some header<!-- number2 -->

Trying it for real

Some header

Some header

Setting to no action since we have Item1607. I changed 1607 from enhancement to Normal. it is a bug - not an enhancement.

-- TWiki:Main.KennethLavrsen - 04 Aug 2008

Summary Identical headings lead to generation of non-unique anchors
ReportedBy TWiki:Main.MarkusUeberall
Codebase 4.2.1
SVN Range TWiki-5.0.0, Sun, 03 Aug 2008, build 17280
AppliesTo Engine
Component Render.pm
Priority Normal
CurrentState No Action Required
TargetRelease n/a
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Topic revision: r2 - 2008-08-04 - KennethLavrsen
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