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| author | Peter Stephenson <p.stephenson@samsung.com> | 2018-04-20 11:17:06 +0100 |
|---|---|---|
| committer | Peter Stephenson <p.stephenson@samsung.com> | 2018-04-20 11:17:06 +0100 |
| commit | 0d33815047847b5c0c174734efa1e4c161da868e (patch) | |
| tree | f80853204da7f2449aa0d021b36cd67cfef87196 | |
| parent | 9e2afb92987d7fd96a838c15b6641cc1b634a825 (diff) | |
| download | zsh-0d33815047847b5c0c174734efa1e4c161da868e.tar.gz zsh-0d33815047847b5c0c174734efa1e4c161da868e.tar.xz zsh-0d33815047847b5c0c174734efa1e4c161da868e.zip | |
42693: Fork early for pipelines.
If executing a command not at the end of a pipeline, and not optimised in the calling code, we can fork before "prefork" substitutions, at the same point as for background commands.
| -rw-r--r-- | Src/exec.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/Src/exec.c b/Src/exec.c index 1b622d56f..768e3efe2 100644 --- a/Src/exec.c +++ b/Src/exec.c @@ -3146,10 +3146,11 @@ execcmd_exec(Estate state, Execcmd_params eparams, esprefork = (magic_assign || (isset(MAGICEQUALSUBST) && type != WC_TYPESET)) ? PREFORK_TYPESET : 0; - if (how & Z_ASYNC) { + if ((how & Z_ASYNC) || (output && !last1)) { /* - * If running in the background, we don't need any of - * the rest of this functino to affect the state in the + * If running in the background, or not the last command in a + * pipeline and not already forked, we don't need any of + * the rest of this function to affect the state in the * main shell, so fork immediately. * * In other cases we may need to process the command line |