Hi, Given the input file of three lines:
line 1 line 2 line 3 and the sed script s/\</\ /g s/^/hello/ which inserts a newline in front of every word and then prepends the word "hello" to the beginning of the pattern space. The following happens: $ sed -f script.sed input.txt hello hello hello I was expecting to get hello line 1 hello line 2 hello line 3 This is a bit surprising since running only the first sed expression gives (as expected) line 1 line 2 line 3 The question is, why does the "line N" data disappear when inserting a word at the start of the pattern space here? I'm also noticing that this does not happen if a space (for instance) precedes the escaped newline in the first expression: s/\</ \ /g s/^/hello/ This is using sed in the base system on OpenBSD 6.1-stable (amd64). Cheers, -- Andreas Kusalananda Kähäri, National Bioinformatics Infrastructure Sweden (NBIS), Uppsala University, Sweden.
