Details
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Bug
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Status: Closed
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Normal
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Resolution: Done
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PUP 3.7.5, PUP 4.0.0
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None
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1
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Language 2015-04-29, Language 2015-05-13
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Bug Fix
Description
Ran:
$thing = "hi there"
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notice(@("END INTERP"))
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This string should be able to interpolate variables, and all backslashes should
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be interpreted as plain old literal backslashes.
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Variable standing apart: ${thing}
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Variable enjambed: hey${thing}
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Variable with single backslash enjambed: \${thing}
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Variable with double backslash enjambed: \\${thing}
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END INTERP
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The single backslash before the $ causes a problem. I'm pretty sure this is against the specification of heredocs.
Actual result:
Notice: Scope(Class[main]): This string should be able to interpolate variables, and all backslashes should
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be interpreted as plain old literal backslashes.
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Variable standing apart: hi there
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Variable enjambed: heyhi there
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Variable with single backslash enjambed: \${thing}
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Variable with double backslash enjambed: \\hi there
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Expected result:
Notice: Scope(Class[main]): This string should be able to interpolate variables, and all backslashes should
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be interpreted as plain old literal backslashes.
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Variable standing apart: hi there
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Variable enjambed: heyhi there
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Variable with single backslash enjambed: \hi there
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Variable with double backslash enjambed: \\hi there
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3.7.5 and 4.0.0 behave identically.
In addition, if any escape (other than '$' escapes) are turned on, it also turns on escaping of '$'. This is caused by the same faulty logic.
QA
risk: medium (validate only)
probability: low (single backslash directly before interpolation in pp heredoc)
severity: medium (obvious issue, workarounds)
test level: unit
