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Diffstat (limited to 'Etc/FAQ.yo')
| -rw-r--r-- | Etc/FAQ.yo | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Etc/FAQ.yo b/Etc/FAQ.yo index 7d4b86ec3..eeb7c13de 100644 --- a/Etc/FAQ.yo +++ b/Etc/FAQ.yo @@ -1784,7 +1784,14 @@ sect(Why is my output duplicated with `tt(foo 2>&1 >foo.out | bar)'?) to both files when the redirector appears twice. What's going on in the first example is exactly the same, however the second redirector is disguised as a pipe. So if you want to turn this effect off, you need - to unset the option mytt(MULTIOS). + to unset the option mytt(MULTIOS), or alternatively write the following: + verb( + % { print output; print error >&2 } 2>&1 >&- >foo.out | sed 's/error/erratic/' + erratic + ) + By closing stdout with tt(>&-), we're cancelling the previous redirections + (to the pipe) and start anew with tt(>foo.out) instead of adding it as a + redirection target to stdout. sect(What are these `^' and `~' pattern characters, anyway?) |