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Shell: Recognise the (seemingly) bash-specific <<\WORD heredoc key

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Bash eats the backslash in this format (similarly for W\ORD etc.).
Dr.POSIX doesn't specify this anywhere, but it's used all over the
place, so let's support it.
This commit is contained in:
Ali Mohammad Pur 2023-09-21 02:32:09 +03:30 • committed by Jelle Raaijmakers
commit 9e978c6cd1
Notes: sideshowbarker 2024-07-17 00:23:42 +09:00
1 changed files with 4 additions and 1 deletions
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5
Userland/Shell/PosixLexer.cpp
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@ -168,7 +168,8 @@ Lexer::HeredocKeyResult Lexer::process_heredoc_key(Token const& token)
}
break;
default:
if (escaped) {
// NOTE: bash eats the backslash outside quotes :shrug:
if (escaped && parse_state.last() != Free) {
builder.append('\\');
escaped = false;
}
@ -568,6 +569,8 @@ ErrorOr<Lexer::ReductionResult> Lexer::reduce_start()
auto contents = m_lexer.input().substring_view(start_index, end_index.value_or(m_lexer.tell()) - start_index);
reconsume(contents);
if (end_index.has_value())
reconsume(m_lexer.input().substring_view_starting_after_substring(contents).substring_view(0, m_lexer.tell() - *end_index));
m_state.buffer.clear();
m_state.buffer.append(contents);