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Considerably improved REPL, with better parse error handling

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Simon Brooke 2019-08-17 13:48:49 +01:00
parent 609e2c3a6e
commit 526b71bce7
4 changed files with 69 additions and 14 deletions
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17
README.md
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@ -4,15 +4,22 @@ LISP 1.5 is to all Lisp dialects as Beowulf is to Emglish literature.
## What this is
A work-in-progress towards an implementation of Lisp 1.5 in Clojure.
A work-in-progress towards an implementation of Lisp 1.5 in Clojure. The
objective is to build a complete and accurate implementation of Lisp 1.5
as described in the manual, with, in so far as is possible, exactly the
same bahaviour; the only intended deviation is that the parser reads
'mexprs' (meta language expressions) as well as sexprs.
## BUT WHY?!!?!
Because.
Because Lisp is the only computer language worth learning, and if a thing is worth learning, it's worth learning properly; which means going back to the beginning and trying to understand that.
Because Lisp is the only computer language worth learning, and if a thing
is worth learning, it's worth learning properly; which means going back to
the beginning and trying to understand that.
Because there is, so far as I know, no working implementation of Lisp 1.5 for modern machines.
Because there is, so far as I know, no working implementation of Lisp 1.5
for modern machines.
Because I'm barking mad, and this is therapy.
@ -24,6 +31,10 @@ Download from http://example.com/FIXME.
`java -jar beowulf-0.1.0-standalone.jar`
This will start a Lisp 1.5 read/eval/print loop (REPL).
To end a session, type `quit` at the command prompt.
## Learning Lisp 1.5
The `Lisp 1.5 Programmer's Manual` is still