Improve fallback Display impl for TokenStream #246
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This also fixes an issue where `quote!((1 + 2)).to_string()` outputs `( 1 + 2 )` in fallback mode but `(1 + 2)` in regular mode.
This was referenced Sep 4, 2020
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This also fixes an issue where
quote!((1 + 2)).to_string()outputs( 1 + 2 )in fallback mode but(1 + 2)in regular mode.