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trail_ref cleanup

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git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@64 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
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vsc
2001-06-08 14:52:54 +00:00
parent be02a4f6ab
commit 95a113aac9
12 changed files with 120 additions and 49 deletions
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30
docs/yap.tex
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@@ -7445,6 +7445,36 @@ for the command is returned in @var{Status}.
Fetch the current directory at @var{CurDir}. If @var{NextDir} is bound
to an atom, make its value the current working directory.
@item shell
@findex shell/0
@syindex shell/0
@cnindex shell/0
Start a new shell and leave Yap in background until the shell
completes. Yap uses the shell given by the environment variable
@code{SHELL}. In WIN32 environment YAP will use @code{COMSPEC} if
@code{SHELL} is undefined.
@item shell(+@var{Command})
@findex shell/1
@syindex shell/1
@cnindex shell/1
Execute command @var{Command} under a new shell. Yap will be in
background until the command completes. In Unix environments Yap uses
the shell given by the environment variable @code{SHELL} with the option
@code{" -c "}. In WIN32 environment YAP will use @code{COMSPEC} if
@code{SHELL} is undefined, in this case with the option @code{" /c "}.
@item shell(+@var{Command},-@var{Status})
@findex shell/1
@syindex shell/1
@cnindex shell/1
Execute command @var{Command} under a new shell and unify @var{Status}
with the exit for the command. Yap will be in background until the
command completes. In Unix environments Yap uses the shell given by the
environment variable @code{SHELL} with the option @code{" -c "}. In
WIN32 environment YAP will use @code{COMSPEC} if @code{SHELL} is
undefined, in this case with the option @code{" /c "}.
@item sleep(+@var{Time})
@findex sleep/1
@syindex sleep/1