#+AUTHOR: Mark Wooding
#+LaTeX_CLASS: strayman
#+LaTeX_HEADER: \usepackage{tikz, gnuplot-lua-tikz}
+#+EXPORT_FILE_NAME: doc/README.pdf
~runlisp~ is a small C program intended to be run from a script ~#!~
line. It selects and invokes a Common Lisp implementation, so as to run
+ Armed Bear Common Lisp (~abcl~),
+ Clozure Common Lisp (~ccl~),
+ GNU CLisp (~clisp~),
- + Carnegie--Mellon Univerity Common Lisp (~cmucl~), and
+ + Carnegie--Mellon Univerity Common Lisp (~cmucl~),
+ Embeddable Common Lisp (~ecl~), and
+ Steel Bank Common Lisp (~sbcl~).
: 3
If your build script needs to get information out of Lisp, then wrapping
-~format~, or even ~prin1~, around forms is annoying; so ~runlisp~ has a
+~format~, or even ~princ~, around forms is annoying; so ~runlisp~ has a
~-p~ option which prints the values of the forms it evaluates.
: $ runlisp -e '(+ 1 2)'
: 3
-If a form produces multiple values, then ~-p~ will print all of them
-separated by spaces, on a single line:
+If a form produces multiple values, then ~-p~ will print all of them, as
+if by ~princ~, separated by spaces, on a single line:
: $ runlisp -p '(floor 5 2)'
: 2 1
+There's also a ~-d~ option, which does the same thing as ~-p~, only it
+prints values as if by ~prin1~. For example,
+
+: $ runlisp -p '"Hello, world!"'
+: Hello, world!
+: runlisp -d '"Hello, world!"'
+: "Hello, world!"
+
In addition to evaluating forms with ~-e~, and printing their values
-with ~-p~, you can also load a file of Lisp code using ~-l~.
+with ~-d~ and ~-p~, you can also load a file of Lisp code using ~-l~.
When ~runlisp~ is acting on ~-e~, ~-p~, and/or ~-l~ options, it's said
to be running in /eval/ mode, rather than its usual /script/ mode. In
-script mode, it /doesn't/ set ~:runlisp-script~ in ~*features*~.
+eval mode, it /doesn't/ set ~:runlisp-script~ in ~*features*~.
You can still insist that ~runlisp~ use a particular Lisp
implementation, or one of a subset of implementations, using the ~-L~
The thing we haven't seen before is ~${@IMAGENEW|q}~. The
~@IMAGENEW~ setting is defined by the ~dump-runlisp-image~ program
- the name the file in which the new image should be
+ to name the file in which the new image should be
saved.[fn:image-rename] The ~|q~ `filter' is new: it means that the
filename should be escaped suitable for inclusion in a Lisp quoted
string, by prefixing each ~\~ or ~"~ with a ~\~.
level of shell integration for all its supported Lisp implementations.
In particular:
- + It ensures that the standard Unix `stdin', `stdout', and `stdarr'
+ + It ensures that the standard Unix `stdin', `stdout', and `stderr'
file descriptors are hooked up to the Lisp ~*standard-input*~,
~*standard-output*~, and ~*error-output*~ streams.