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authorDenys Vlasenko2020-02-17 10:24:32 +0100
committerDenys Vlasenko2020-02-17 10:24:32 +0100
commit9ee5892798be81f7a6f3e070ecd52cbf0d55740e (patch)
tree9801edcaadd307687df6f33cad7ba7edd1e2b75b /shell/brace.txt
parentc2ce888030b6b880b3229520a8ff7d7026248a9a (diff)
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ash: expand: Fix trailing newlines processing in backquote expanding
Upstream commit: Date: Mon, 29 Apr 2019 19:13:37 +0500 expand: Fix trailing newlines processing in backquote expanding According to POSIX.1-2008 we should remove newlines only at the end of the substitution. Newlines-only substitions causes dash to remove newlines before beggining of the substitution. The following code: cat <<END 1 $(echo "") 2 END prints "1<newline>2" instead of expected "1<newline><newline>2". This patch fixes trailing newlines processing in backquote expanding. Signed-off-by: Nikolai Merinov <n.merinov@inango-systems.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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