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commit bash-20161014 snapshot

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This commit is contained in:
Chet Ramey
2016-10-19 15:14:38 -04:00
parent ff293129ec
commit 03b415d33e
15 changed files with 219 additions and 58 deletions
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builtins/evalstring.c
+25
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@@ -127,6 +127,31 @@ optimize_fork (command)
command->value.Connection->second->value.Simple->flags |= CMD_NO_FORK;
}
}
void
optimize_subshell_command (command)
COMMAND *command;
{
if (running_trap == 0 &&
command->type == cm_simple &&
any_signals_trapped () < 0 &&
command->redirects == 0 && command->value.Simple->redirects == 0 &&
((command->flags & CMD_TIME_PIPELINE) == 0) &&
((command->flags & CMD_INVERT_RETURN) == 0))
{
itrace("optimize_subshell_command: optimizing simple command");
command->flags |= CMD_NO_FORK;
command->value.Simple->flags |= CMD_NO_FORK;
}
else if (command->type == cm_connection &&
(command->value.Connection->connector == AND_AND || command->value.Connection->connector == OR_OR))
{
itrace("optimize_subshell_command: attempting to optimize connection");
optimize_subshell_command (command->value.Connection->second);
}
else
itrace("optimize_subshell_command: command type = %d", command->type);
}
/* How to force parse_and_execute () to clean up after itself. */
void