[isabelle-dev] proof state layout

[Tobias Nipkow]

When I look at how proof states are displayed in the document prog-prove.pdf 
dated April 29 it looks like it always did. However, when I produced the same 
document today I find that the pretty printer no longer inserts line breaks in 
subgoals but displays them as one long line. For example on page 11. What 
happened and how can I get the line breaks back?

Tobias

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