re-applied changes from…

re-applied changes from https://github.com/heatherleaf/nltk/commit/c65dffdf4bf10a81aa07e508175f7818a12f5183, cf https://github.com/nltk/nltk/issues/670

re-applied changes from…
re-applied changes from https://github.com/heatherleaf/nltk/commit/c65dffdf4bf10a81aa07e508175f7818a12f5183, cf https://github.com/nltk/nltk/issues/670
045e4810 · Steven Bird · 2266fa40 · 045e4810
Commit 045e4810 authored May 20, 2014 by Steven Bird
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nltk/parse/chart.py
+2 -1

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--- a/nltk/parse/chart.py
+++ b/nltk/parse/chart.py
@@ -1329,7 +1329,8 @@ class ChartParser(ParserI):
                edge = agenda.pop()
                for rule in inference_rules:
                    new_edges = list(rule.apply(chart, grammar, edge))
-                    trace_new_edges(chart, rule, new_edges, trace, trace_edge_width)
+                    if trace:
+                        trace_new_edges(chart, rule, new_edges, trace, trace_edge_width)
                    agenda += new_edges
        else: