Re: A feq questions about eating spaces in macros

[Hans Hagen <pragma@wxs.nl>]

Radhelorn wrote:

> Hello!
>
> I have a few questions about ignoring unnecessary spaces and blank 
> lines. The following example illustrates my problem. In the first 
> start/stop pair text after \startcommand is not bold as it should be, 
> in the second it is bold but blank line is before. I've tried to fix 
> this with various manipulations with \noindent with moderate success.
>
> Another problem is necessity to explicitly add % character before 
> \stopcommand to ignore newline. How to do this inside macro with this 
> combination of lines and sidebar?
>
> Thanks in advance for any suggestions.
>
> ---------
>
> \setuplines[before=,after=]
>
> \def\startcommand{\dosingleargument\dostartcommand}
>
> \def\dostartcommand[#1]%
>   {\bgroup\defineshortcut[style=bold]#1\startlines\startsidebar}
>
> \def\stopcommand{\stopsidebar\stoplines\egroup}
>
> \starttext
>
> \startcommand
> <this must be bold>
> \input knuth
> <this is bold>%
> \stopcommand
>
> some text
>
> \startcommand[arg]
> <this is bold indeed but with a blank line before>
> \input knuth
> \stopcommand
>
> \stoptext
>
>
\ignorespaces ....

... \removeunwantedspaces

Hans

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