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I have realised that I do not need an \if ... \fi suite here. It has become obvious to me that it does not do anything for me, and that I do not require it.

All I need is:

{\DTLfetch{litdays}{soy}{\publicationdate}{special}}

and it is sufficient.

Sorry for not working this out before I posted ...

I have this piece of code which fetches from a file the title of a particular Sunday depending on the church calendar. (E.g., Easter, First Sunday of Epiphany, etc.) The sheet consists of various fields, where the field called "special" is the title of the day (e.g., "Candlemas" --- if the date is ...

Thanks for elucidating your previous comment. I take your point, and my approach is now guided by your advice. Thus, I am opting for the recommended way of doing things. At least I have an alternative to try, should I encounter further problems.

Thanks. I had not noticed \DTMsetup{showdow=false}, but will probably stick with \DTMshowdowfalse, as it is more compact. However, it is good to have an alternative.

Thanks too for the tip about examining the source code as well as reading the documentation.

Calum

\DTMshowdowfalse was exactly what I needed, @rais.

What I am wondering is if that information that you supplied is documented somewhere, and I have missed it? Or is it simply something that a person who knows LaTeX well or the datetime2 package well would know instinctively?

Anyway, I am grateful ...

I produce a booklet which has the date of publication on the front, and inside a list of forthcoming dates that are calculated automatically using datatime2 calc using default of showdow=true.

(a) Inside that works well, as the NAME of the day of the week alongside the date is a helpful check that ...

I have now removed \DeclareRobustCommand{\DTLpar}{\par}, as I note that it is not required.

@Ijon Tichy, thanks very much for your help.

In the preamble, I added:

\DeclareRobustCommand{\DTLpar}{\par}

In the page, I have put:

{
\setlength{\parskip}{0\baselineskip plus 2pt}
\newcommand{\pubcoll}{\bliadhna-\mios-\latha}
\DTLfetch{goirid}{soy}{\pubcoll}{collect}
}

That did exactly ...

I grateful for this helpful advice that you have given me, with several options. I shall try them and report back, probably later today.

I have a text-based data file that contains the text of short prayers called collects. There is one for each Sunday of the year. The file contains dates in the left hand column, and the collects in the right hand column.

Using the datatool package, the template for a booklet I produce weekly for ...