Numbering with XSLT?

[cmueller]

How can I initiate that sections are numbered in ascending order?

<tgroup layout="section">
  <metadata>
    <dc:title>Intro</dc:title>
  </metadata>
</tgroup>
<tgroup layout="section">
  <metadata>
    <dc:title>Main</dc:title>
  </metadata>
</tgroup>
<tgroup layout="section">
  <metadata>
    <dc:title>Outlook</dc:title>
  </metadata>
</tgroup>

Currently our XSLT return the following:

1. Intro
1. Main
1. Outlook

How can I initiate the below output with XSLT?

1. Intro
2. Main
3. Outlook

[clange]

With your input as given above, I get the following behavior:

• using it as you pasted it here: no numbering at all
• changing "section" to "sectioning": numbering as desired: 1, 2, 3.

What exact input did you use?

[cmueller]

Replying to clange:

What exact input did you use?

I used "section" instead of "sectioning". I just changed my test data as follows:

<omdoc>
<theory>
<tgroup layout="sectioning">
  <metadata>
    <dc:title>Intro</dc:title>
  </metadata>
</tgroup>
<tgroup layout="sectioning">
  <metadata>
    <dc:title>Main</dc:title>
  </metadata>
</tgroup>
<tgroup layout="sectioning">
  <metadata>
    <dc:title>Outlook</dc:title>
  </metadata>
</tgroup>
</theory>
</omdoc>

which results in

1.1. Intro
1.2. Main
1.3. Outlook

But I just realised that when using theory elements instead of tgroup elements, I get the numbering I was looking for:

<omdoc>
<theory>
  <metadata>
    <dc:title>Intro</dc:title>
  </metadata>
</theory>
<theory>
  <metadata>
    <dc:title>Main</dc:title>
  </metadata>
</theory>
<theory>
  <metadata>
    <dc:title>Outlook</dc:title>
  </metadata>
</theory>
</omdoc>

results in

1. Intro
2. Main
3. Outlook

Many thanks for your help!