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sed: make N command behave as in GNU sed

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2010-08-16 16:26:33 +02:00
parent f2860bf6d3
commit 0d555fc951
2 changed files with 22 additions and 6 deletions
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14
testsuite/sed.tests
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@@ -80,10 +80,18 @@ test x"$SKIP_KNOWN_BUGS" = x"" && {
# Query: how does this interact with no newline at EOF?
testing "sed n (flushes pattern space, terminates early)" "sed -e 'n;p'" \
"a\nb\nb\nc\n" "" "a\nb\nc\n"
# N does _not_ flush pattern space, therefore c is still in there @ script end.
testing "sed N (doesn't flush pattern space when terminating)" "sed -e 'N;p'" \
"a\nb\na\nb\nc\n" "" "a\nb\nc\n"
}
# non-GNU sed: N does _not_ flush pattern space, therefore c is eaten @ script end
# GNU sed: N flushes pattern space, therefore c is printed too @ script end
testing "sed N (flushes pattern space (GNU behavior))" "sed -e 'N;p'" \
"a\nb\na\nb\nc\n" "" "a\nb\nc\n"
testing "sed N test2" "sed ':a;N;s/\n/ /;ta'" \
"a b c\n" "" "a\nb\nc\n"
testing "sed N test3" "sed 'N;s/\n/ /'" \
"a b\nc\n" "" "a\nb\nc\n"
testing "sed address match newline" 'sed "/b/N;/b\\nc/i woo"' \
"a\nwoo\nb\nc\nd\n" "" "a\nb\nc\nd\n"