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-rw-r--r--sphinx/writers/text.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/sphinx/writers/text.py b/sphinx/writers/text.py
index 62d3791fb..3f2edd145 100644
--- a/sphinx/writers/text.py
+++ b/sphinx/writers/text.py
@@ -488,7 +488,7 @@ class TextTranslator(nodes.NodeVisitor):
for i, cell in enumerate(line):
par = my_wrap(cell, width=colwidths[i])
if par:
- maxwidth = max(map(column_width, par))
+ maxwidth = max(column_width(x) for x in par)
else:
maxwidth = 0
realwidths[i] = max(realwidths[i], maxwidth)