Blame SOURCES/bash-4.2-case-in-command-subst.patch
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diff -up bash-4.2/parse.y.old bash-4.2/parse.y
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--- bash-4.2/parse.y.old 2015-05-18 13:04:30.341494305 +0200
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+++ bash-4.2/parse.y 2015-05-18 13:05:18.245509202 +0200
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@@ -3693,6 +3693,17 @@ eof_error:
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}
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else if MBTEST((tflags & LEX_CKCOMMENT) && ch == '#' && (lex_rwlen == 0 || ((tflags & LEX_INWORD) && lex_wlen == 0)))
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; /* don't modify LEX_RESWDOK if we're starting a comment */
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+ /* Allow `do' followed by space, tab, or newline to preserve the
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+ RESWDOK flag, but reset the reserved word length counter so we
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+ can read another one. */
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+ else if MBTEST(((tflags & LEX_INCASE) == 0) &&
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+ (isblank(ch) || ch == '\n') &&
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+ lex_rwlen == 2 &&
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+ STREQN (ret + retind - 2, "do", 2))
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+{
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+/*itrace("parse_comsub:%d: lex_incase == 1 found `%c', found \"do\"", line_number, ch);*/
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+ lex_rwlen = 0;
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+}
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else if MBTEST((tflags & LEX_INCASE) && ch != '\n')
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/* If we can read a reserved word and we're in case, we're at the
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point where we can read a new pattern list or an esac. We
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