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["Sam Liddicott" <address@hidden>]

This texmacs draws a triangle

<assign|x|<tuple|<point|2|2>|<point|3|3>|<point|1|0>>>

<quasi|<cline|<point|0|0>|<point|1|1>|<unquote*|<value|x>>>>

I have a macro "jags" which returns a tuple of points that might be used 
by cline to make a jagged line.

<assign|append-tuple|<macro|name|t|<if|<equal|<get-label|<value|<arg|name>>>|tuple>|<assign|<arg|name>|<merge|<value|<arg|name>>|<arg|t>>>|<assign|<arg|name>|<arg|t>>>>>

<assign|jags|<macro|c|<with|x|0|xpoints||<while|<less|<value|x>|7>|<append-tuple|xpoints|<tuple|<point|<value|x>|<mod|<value|x>|2>>>><assign|x|<plus|<value|x>|1>>><value|xpoints>>>>

Sadly, cline does not take a tuple, but using the output of the macro 
"jags" keeps causing a segfault:

<assign|x|<jags|>>
<quasi|<cline|<point|0|0>|<point|1|1>|<unquote*|<value|x>>>>

or

<quasi|<assign|x|<unquote|<jags|>>>>
<quasi|<cline|<point|0|0>|<point|1|1>|<unquote*|<value|x>>>>

both crash texmacs.

but not using jags but a tuple directly works and draws the triangle:

<assign|x|<tuple|<point|2|2>|<point|3|3>|<point|1|0>>>
<quasi|<cline|<point|0|0>|<point|1|1>|<unquote*|<value|x>>>>

Any tips?

Judicious use of get-label shows that for both of these:
<quasi|<assign|x|<unquote|<jags|>>>>
<assign|x|<jags|>>

x is a "with" and not a "tuple"

This is clearly the contents of the jags macro showing up - whose first 
item is a "with" clause

I cannot work out why: <quasi|<assign|x|<unquote|<jags|>>>>
did not evaluate jags but rather just fetches it's definition

Sam