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" we need the conceal feature (vim ≥ 7.3)
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if !has('conceal')
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finish
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endif
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" remove the keywords. we'll re-add them below
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syntax clear pythonOperator
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syntax match pythonOperator "\<is\>"
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syntax match pyNiceOperator "\<in\>" conceal cchar=∈
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syntax match pyNiceOperator "\<or\>" conceal cchar=∨
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syntax match pyNiceOperator "\<and\>" conceal cchar=∧
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" include the space after “not” – if present – so that “not a” becomes “¬a”.
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" also, don't hide “not” behind ‘¬’ if it is after “is ”.
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syntax match pyNiceOperator "\%(is \)\@<!\<not\%( \|\>\)" conceal cchar=¬
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syntax match pyNiceOperator "\<not in\>" conceal cchar=∉
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syntax match pyNiceOperator "<=" conceal cchar=≤
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syntax match pyNiceOperator ">=" conceal cchar=≥
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" only conceal “==” if alone, to avoid concealing SCM conflict markers
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syntax match pyNiceOperator "=\@<!===\@!" conceal cchar=≡
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syntax match pyNiceOperator "!=" conceal cchar=≢
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syntax keyword pyNiceOperator sum conceal cchar=∑
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syntax match pyNiceOperator "\<\%(math\.\)\?sqrt\>" conceal cchar=√
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syntax match pyNiceKeyword "\<\%(math\.\)\?pi\>" conceal cchar=π
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syntax keyword pyNiceStatement lambda conceal cchar=λ
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hi link pyNiceOperator Operator
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hi link pyNiceStatement Statement
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hi link pyNiceKeyword Keyword
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hi! link Conceal Operator
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setlocal conceallevel=1
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