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        Sat, 11 Feb 2017 02:37:48 -0800 (PST)
Date: Sat, 11 Feb 2017 23:37:41 +1300
From: "Lilith Bryant (dark141 AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Subject: Re: [geda-user] gschem gnetlist bug/feature
To: geda-user AT delorie DOT com
In-Reply-To: 
 <CAJXU7q8jy9H0-1M=bb4pWu1+x6qCxwfP_QwVkdKgjN334-hbuA AT mail DOT gmail DOT com> (from
 geda-user AT delorie DOT com on Sat Feb 11 22:46:04 2017)
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Reply-To: geda-user AT delorie DOT com

On 2017-02-11 22:46:04, Peter Clifton (petercjclifton AT googlemail DOT com) [via geda-user AT delorie DOT com] wrote:
> If you want to create a power symbol which can be used for any custom net
> name, you could use a net=xxx:1 attribute and set it to show value only
> (but it would read xxx:1 instead of xxx
> 
> 
> This is how I do it, but if you care about the :1, you can hide the net=
> attribute entirely and add visible text (or a label=... attribute). I
> personally prefer leaving the :1 if it is defined in the schematic, not a
> custom symbol - as having two attributes, one visible, one not - which
> might accidentally be out of sync rather suggests possibility of errors
> creeping in.
> 
> Peter Clifton
> 

Whatever the theoretical reasons are (and I do understand them) I can't 
give my clients schematics with a useless :1 tacked on all the port labels.

So, the solution that I use is to make the schematics without the :1, and 
then use a makefile to execute the gsch2pcb step,  with the following rules:

TEMPSCHEMS=$(patsubst %,temp/%.sch,$(SCHEMS))

temp/%.sch : %.sch 
	sed 's/\(net=[^:]*$$\)/\1:1/' >$@ <$<

pcb : $(TEMPSCHEMS)
	gsch2pcb -f $(if $(KEEP),-k,-r) $(FOOTPRINTDIRS) $^ -o $(PCB)

.PHONY : pcb 

This of course works as long as the only thing you use net= for is for ports.