Clarify raw string literal multi-line rules for opening quotes and whitespace handling #47728
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This PR clarifies the documentation for multi-line raw string literal rules to address confusion about what "on their own line" means and how whitespace is handled.
Changes Made
Clarified opening/closing quote requirements: Changed "last non-comment token on its respective line" to "last non-whitespace characters on their line" to be more precise and eliminate confusion about whether quotes can appear on the same line as variable declarations.
Improved whitespace handling description: Changed "Whitespace following the opening quote" to "Any whitespace following the opening quotes" for consistency and clarity.
Made plural forms consistent: Changed "closing quote" to "closing quotes" to match the plural form used elsewhere in the documentation.
Issue Addressed
The original documentation caused confusion because:
var xml = """counted as quotes being "on their own line"Example
The existing code example demonstrates the clarified behavior:
In this example:
"""are the last non-whitespace characters on their line (after the variable assignment)Fixes #34192.
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