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[backport] fix #15064, strscans.scanf edge case for '$+' (#15223)

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Miran 2020-08-25 09:57:15 +02:00 • committed by GitHub
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2 changed files with 16 additions and 2 deletions
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16
tests/stdlib/tstrscans.nim
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@ -79,8 +79,22 @@ block EmptyTuple:
block Arrow:
let text = "foo;bar;baz;"
var idx = 0
var res = ""
doAssert scanp(text, idx, +(~{';','\0'} -> (discard $_)), ';')
doAssert scanp(text, idx, +(~{';','\0'} -> (discard $_)), ';')
doAssert scanp(text, idx, +(~{';','\0'} -> (discard $_)), ';')
doAssert scanp(text, idx, +(~{';','\0'} -> (discard $_)), ';') == false
block issue15064:
var nick1, msg1: string
doAssert scanf("<abcd> a", "<$+> $+", nick1, msg1)
doAssert nick1 == "abcd"
doAssert msg1 == "a"
var nick2, msg2: string
doAssert(not scanf("<abcd> ", "<$+> $+", nick2, msg2))
var nick3, msg3: string
doAssert scanf("<abcd> ", "<$+> $*", nick3, msg3)
doAssert nick3 == "abcd"
doAssert msg3 == ""