Preserve heredoc body when translating multi-line T.let assertions#943
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styrmis wants to merge 4 commits into
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Preserve heredoc body when translating multi-line T.let assertions#943styrmis wants to merge 4 commits into
T.let assertions#943styrmis wants to merge 4 commits into
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When `T.let(...)` spans multiple lines and wraps a heredoc, the replacement range covers the entire call including the heredoc body. Since the value node's source range only covers the opener line (e.g. `<<~MSG.strip`), the body and terminator were silently dropped, producing syntactically broken Ruby.
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KaanOzkan
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Jun 9, 2026
Before this change we would stop at the first heredoc.
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KaanOzkan
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| when Prism::StringNode, Prism::InterpolatedStringNode | ||
| opening = node.opening_loc | ||
| closing = node.closing_loc | ||
| if opening && closing && opening.start_line != closing.start_line |
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I guess you could split a string in multiple lines 😄
s = T.let(
"first
second",
String,
)I found slice, so we can add a opening.slice.start_with?("<<") check to the conditional:
opening && closing && opening.start_line != closing.start_line && opening.slice.start_with?("<<")
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Nice catch—have separately added coverage for backticks in heredocs.
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When
T.let(...)spans multiple lines and wraps a heredoc, the replacement range covers the entire call including the heredoc body. Since the value node's source range only covers the opener line (e.g.<<~MSG.strip), the body and terminator were silently dropped, producing syntactically broken Ruby.