bug#55414: 29.0.50; Byte compilation error for the modus-themes

[Lars Ingebrigtsen]

Alan Mackenzie <acm@muc.de> writes:

> No, no, no, no.  byte-compile--first-symbol-with-pos is NOT the cause of
> the stack overflow - it's part of the handling of that stack overflow,
> and unfortunately causes a second stack overflow.

Prot said that fixing that function made the stack overflow go away,
though.

> You're saying byte-compile--first-symbol-with-pos could be reformulated
> to be non-recursive, I think.  I don't understand that.  It is a
> function working on an arbitrary tree structure.  Such functions are
> always coded using recursion, aren't they?  What am I missing here?

Any recursive algorithm can be reformulated as a non-recursive
algorithm -- either through tail call optimisation (if you're lucky) or
by using a list/stack to stash the data.

-- 
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