[5.9]Fixes wrong escape when creating a string literal where a pound sign follows a sequence of double quotes or backslashes #1821
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…follows a sequence of double quotes or backslashes. This pull request fixes a problem where escaping fails when a pound sign follows a sequence of double quotes or backslashes. As shown in the added test case, `foobar""#` and `foobar\\#` require two pound signs as delimiter for escaping, but the current implementation only adds one pound sign, resulting in an incorrect string literal. The reason for this is that a sequence of double quotes or backslashes will stop counting pound signs if they are not followed by a pound sign. If a double quotation mark or backslash is followed by a double quotation mark or backslash, it must continue in pound sign counting mode.
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@swift-ci Please test |
bnbarham
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Jun 20, 2023
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StringLiteralExprSyntax(content:)constructed an invalid string literal whencontentcontained a pound sign follows a sequence of double quotes or backslashes.StringLiteralExprSyntax(content:)initializerThe following pull request changes will also be merged into the
release/5.9branch.#1813
This pull request fixes a problem where escaping fails when a pound sign follows a sequence of double quotes or backslashes.
As shown in the added test case, foobar""# and foobar\# require two pound signs as delimiter for escaping, but the current implementation only adds one pound sign, resulting in an incorrect string literal.
The reason for this is that a sequence of double quotes or backslashes will stop counting pound signs if they are not followed by a pound sign.
If a double quotation mark or backslash is followed by a double quotation mark or backslash, it must continue in pound sign counting mode.