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\isamarkupchapter{User interfaces%
}
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\isamarkupsection{Plain TTY interaction \label{sec:tool-tty}%
}
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\begin{isamarkuptext}%
The \indexdef{}{tool}{tty}\hypertarget{tool.tty}{\hyperlink{tool.tty}{\mbox{\isa{\isatt{tty}}}}} tool runs the Isabelle process interactively
within a plain terminal session:
\begin{ttbox}
Usage: tty [OPTIONS]
Options are:
-l NAME logic image name (default ISABELLE_LOGIC)
-m MODE add print mode for output
-p NAME line editor program name (default ISABELLE_LINE_EDITOR)
Run Isabelle process with plain tty interaction, and optional line editor.
\end{ttbox}
The \verb|-l| option specifies the logic image. The
\verb|-m| option specifies additional print modes. The The
\verb|-p| option specifies an alternative line editor (such
as the \indexdef{}{executable}{rlwrap}\hypertarget{executable.rlwrap}{\hyperlink{executable.rlwrap}{\mbox{\isa{\isatt{rlwrap}}}}} wrapper for GNU readline); the
fall-back is to use raw standard input.
Regular interaction is via the standard Isabelle/Isar toplevel loop.
The Isar command \hyperlink{command.exit}{\mbox{\isa{\isacommand{exit}}}} drops out into the raw ML system,
which is occasionally useful for low-level debugging. Invoking \verb|Isar.loop|~\verb|();| in ML will return to the Isar toplevel.%
\end{isamarkuptext}%
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\isamarkupsection{Proof General / Emacs%
}
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\begin{isamarkuptext}%
The \indexdef{}{tool}{emacs}\hypertarget{tool.emacs}{\hyperlink{tool.emacs}{\mbox{\isa{\isatt{emacs}}}}} tool invokes a version of Emacs and Proof
General within the regular Isabelle settings environment
(\secref{sec:settings}). This is more robust than starting Emacs
separately, loading the Proof General lisp files, and then
attempting to start Isabelle with dynamic \hyperlink{setting.PATH}{\mbox{\isa{\isatt{PATH}}}} lookup
etc.
The actual interface script is part of the Proof General
distribution~\cite{proofgeneral}; its usage depends on the
particular version. There are some options available, such as
\verb|-l| for passing the logic image to be used by default,
or \verb|-m| to tune the standard print mode. The following
Isabelle settings are particularly important for Proof General:
\begin{description}
\item[\indexdef{}{setting}{PROOFGENERAL\_HOME}\hypertarget{setting.PROOFGENERAL-HOME}{\hyperlink{setting.PROOFGENERAL-HOME}{\mbox{\isa{\isatt{PROOFGENERAL{\isacharunderscore}HOME}}}}}] points to the main
installation directory of the Proof General distribution. The
default settings try to locate this in a number of standard places,
notably \verb|$ISABELLE_HOME/contrib/ProofGeneral|.
\item[\indexdef{}{setting}{PROOFGENERAL\_OPTIONS}\hypertarget{setting.PROOFGENERAL-OPTIONS}{\hyperlink{setting.PROOFGENERAL-OPTIONS}{\mbox{\isa{\isatt{PROOFGENERAL{\isacharunderscore}OPTIONS}}}}}] is implicitly prefixed to
the command line of any invocation of the Proof General \verb|interface| script.
\item[\indexdef{}{setting}{XSYMBOL\_INSTALLFONTS}\hypertarget{setting.XSYMBOL-INSTALLFONTS}{\hyperlink{setting.XSYMBOL-INSTALLFONTS}{\mbox{\isa{\isatt{XSYMBOL{\isacharunderscore}INSTALLFONTS}}}}}] may contain a small shell
script to install the X11 fonts required for the X-Symbols mode of
Proof General. This is only relevant if the X11 display server runs
on a different machine than the Emacs application, with a different
file-system view on the Proof General installation. Under most
circumstances Proof General is able to refer to the font files that
are part of its distribution.
\end{description}%
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