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Diffstat (limited to 'Doc/Zsh')
| -rw-r--r-- | Doc/Zsh/expn.yo | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Doc/Zsh/expn.yo b/Doc/Zsh/expn.yo index adbc662e6..28d525f14 100644 --- a/Doc/Zsh/expn.yo +++ b/Doc/Zsh/expn.yo @@ -471,6 +471,18 @@ example(tt({ paste <LPAR()cut -f1) var(file1)tt(RPAR() <LPAR()cut -f3) var(file2 The extra processes here are spawned from the parent shell which will wait for their completion. +Another problem arises any time a job with a substitution that requires +a temporary file is disowned by the shell, including the case where +`tt(&!)' or `tt(&|)' appears at the end of a command containing a +subsitution. In that case the temporary file will not be cleaned up as +the shell no longer has any memory of the job. A workaround is to use +a subshell, for example, + +example(LPAR()mycmd =(myoutput)RPAR() &!) + +as the forked subshell will wait for the command to finish then remove +the temporary file. + texinode(Parameter Expansion)(Command Substitution)(Process Substitution)(Expansion) sect(Parameter Expansion) cindex(parameter expansion) |