On Feb 6, 2013, at 1:04 AM, Ingo Hohmann <context@ingohohmann.de> wrote:

On 02/03/2013 04:56 AM, Rogers, Michael K wrote:
On Feb 1, 2013, at 6:16 PM, Ingo Hohmann <context@ingohohmann.de> wrote:

Hi,

is it possible to define a block, where lines are automatically formatted differently?
For example:
first line in caps,
second in bold,
others normal.

Is this possible? And how?
If you mean input lines, then yes.  But if you mean output lines, then I don't know.  It seems a well-defined task, but a hard task judging by how the line-breaking algorithm is described by Knuth.  I'll leave that question to experts.

Here's a way to process the input lines.  If there's a counter that counts the line number, there would be another way; but I couldn't find out that there was a counter.  There may be better ways anyway.

\define\FirstLine{\let\myLine\SecondLine\sc}
\define\SecondLine{\let\myLine\OtherLine\bf}
\define\OtherLine{\tf}
\definelines[doMyLines][command=\myLine]
\def\startMyLines{\let\myLine\FirstLine\startdoMyLines}
\def\stopMyLines{\stopdoMyLines}
As I said that works, but while trying to understand this, I found that the documentation for \definelines doesn't mention the "command=" option. On the other hand it does mention "align=" and this doesn't work. Neither does \setuplines.

I figured it out from the source, spac-lin.mkiv.  One might see there that the "align" key does not seem to be processed; it s a relic from a previous version of ConTeXt, I suppose.  Many macros have a "command" key, which usually seems to be a method for customizing the basic unit, in this case a line.  (The source is written in a certain style that makes it possible often to figure things out, even when the wiki is not up-to-date.  I say "possible" but not always easy.  And there's always this maillist.)



This e-mail message (including any attachments) is for the sole use of
the intended recipient(s) and may contain confidential and privileged
information. If the reader of this message is not the intended
recipient, you are hereby notified that any dissemination, distribution
or copying of this message (including any attachments) is strictly
prohibited.

If you have received this message in error, please contact
the sender by reply e-mail message and destroy all copies of the
original message (including attachments).