Re: found a bug in 3.13.9 dbLoadTemplate - after all that time

[kuner <kuner@mail.bessy.de>]

Hallo Andrew,

> The only way we can replicate your results here is by using msi to do 
> the macro expansion on the host, which gives:
It was my mistake in the first message. I recognised the "bug" when I 
was running make and supposed dbLoadTemplate was invoked. Later I saw 
that the make system uses the msi and a call of dbLoadTemplate produces 
the warnings.

> We will therefor be releasing a new version of MSI which behaves like 
> the old dbLoadTemplate program and leaves the unexpanded $(HOPR) and 
> $(LOPR) variables in the output.
>
> Note that the rules for how templates are expanded are found in the 
> IOC application's <top>/config/RULES.Db file.  We assume that your 
> RULES.Db has been modified to use msi instead of dbLoadTemplate.
Yes, but I'm just a user of this make system and never had a look on in 
that is more deep as neccessyry :-)

> We are also leaning towards implementing Andreas Luedeke's suggestion 
> of being able to put default values for particular macros inside the 
> template file.  If you wish to persue your idea of including defaults 
> in the substitutions file pattern line, you'll have to write your own 
> tool to do that (or modify one of the existing EPICS programs).
My Idea of putting defaults in the pattern was spontaneous when I was 
considering the ability of having defaults by setting all substitutions 
in the first line of a .substitution file and using the msi's feature to 
"keep it in mind" for the other lines. Here the way to put it in the 
pattern line is a cleaner way. The advantage of this is to have 
"individual" defaults for a special application instead of "global" 
defaults in the template itself. But I agree that Andreas' idea is also 
really good to prevent that one has to change all .substitution files 
when changing the template. Why couldn't we have both - as a kind of 
"value inheritance"?

Regards

Bernhard

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