Initial commit

.gitignore

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+*.so
+*.o
+*.import.scm
+*.link
+*.sh

COPYING

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+# Open Works License
+
+This is version 0.9.4 of the Open Works License
+
+## Terms
+
+Permission is hereby granted by the holder(s) of copyright or other legal
+privileges, author(s) or assembler(s), and contributor(s) of this work, to any
+person who obtains a copy of this work in any form, to reproduce, modify,
+distribute, publish, sell, sublicense, use, and/or otherwise deal in the
+licensed material without restriction, provided the following conditions are
+met:
+
+Redistributions, modified or unmodified, in whole or in part, must retain
+applicable copyright and other legal privilege notices, the above license
+notice, these conditions, and the following disclaimer.
+
+NO WARRANTY OF ANY KIND IS IMPLIED BY, OR SHOULD BE INFERRED FROM, THIS LICENSE
+OR THE ACT OF DISTRIBUTION UNDER THE TERMS OF THIS LICENSE, INCLUDING BUT NOT
+LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
+AND NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS, ASSEMBLERS, OR HOLDERS OF
+COPYRIGHT OR OTHER LEGAL PRIVILEGE BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER
+LIABILITY, WHETHER IN ACTION OF CONTRACT, TORT, OR OTHERWISE ARISING FROM, OUT
+OF, OR IN CONNECTION WITH THE WORK OR THE USE OF OR OTHER DEALINGS IN THE WORK.

abbrev.egg

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+;; -*- lisp-data -*-
+((synopsis "Create unique abbreviations for a list of strings")
+ (license "LicenseRef-OWL-0.9.4")
+ (category misc)
+ (test-dependencies test)
+ (maintainer "Lilianna Smólska")
+ (author "Peter Lane, Lilianna Smólska")
+ (components (extension abbrev (source "abbrev.sld"))))

abbrev.release-info

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+;; -*- lisp-data -*-
+(repo git "git://git.linuxposting.xyz/afiw/chicken-abbrev.git")
+(uri targz "https://git.linuxposting.xyz/afiw/chicken-abbrev/archive/{egg-release}.tar.gz")
+(release "1.0")

abbrev.scm

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+;;; Abbrev library for R7RS Scheme.
+;;; Calculate the set of unique abbreviations for a given set of 
+;;; words.  (Borrowed from Ruby's Abbrev.)
+
+;;; SPDX-License-Identifier: LicenseRef-OWL-0.9.4
+;;; SPDX-FileCopyrightText: 2017 Peter Lane
+;;; SPDX-FileCopyrightText: 2025 afiw <afiw@linuxposting.xyz>
+
+;; input: a list of strings
+;;        and an optional string prefix
+;; output: list of (abbrev . string) dotted pairs
+
+(define (abbrev strings #!optional prefix)
+  (let loop ((abbrevs '())
+             (seen '())
+             (words strings)
+             (idx 1))
+    (cond ((null? words)                ; done
+           abbrevs)
+          ((or (and prefix (not (string-prefix? prefix (car words)))) ; does not match prefix
+               (> idx (string-length (car words)))) ; or at end of word, so go to next word
+           (loop abbrevs
+                 seen
+                 (cdr words)
+                 1))
+          (else 
+           (let ((new-abbrev (substring (car words) 0 idx)))
+             (if (member new-abbrev seen string=?) ; if seen abbrev before
+                 (loop (remove (lambda (w) (string=? new-abbrev (car w))) abbrevs) ; delete from abbrevs
+                       seen             ; but keep in seen
+                       words 
+                       (+ 1 idx))
+                 (loop (cons (cons new-abbrev (car words)) abbrevs) ; not seen before, so add to abbrevs
+                       (cons new-abbrev seen) ; and store in seen
+                       words
+                       (+ 1 idx))))))))

abbrev.sld

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+;;; Abbrev library for R7RS Scheme.
+;;; Calculate the set of unique abbreviations for a given set of 
+;;; words.  (Borrowed from Ruby's Abbrev.)
+
+;;; SPDX-License-Identifier: LicenseRef-OWL-0.9.4
+;;; SPDX-FileCopyrightText: (c) 2017 Peter Lane
+;;; SPDX-FileCopyrightText: (c) 2025 afiw <afiw@linuxposting.xyz>
+
+(define-library (abbrev)
+  (import (scheme base)
+          (only (srfi-1) remove)
+          (only (srfi-13) string-prefix?))
+  (export abbrev)
+  (include "abbrev.scm"))

tests/run.scm

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+;;; Abbrev library for R7RS Scheme.
+;;; SPDX-License-Identifier: LicenseRef-OWL-0.9.4
+;;; SPDX-FileCopyrightText: 2025 afiw <afiw@linuxposting.xyz>
+(import (abbrev)
+        (test))
+(test "original example"
+      '(("lisp" . "lisp")
+        ("lis" . "lisp")
+        ("li" . "lisp")
+        ("l" . "lisp")
+        ("scala" . "scala")
+        ("scal" . "scala")
+        ("sca" . "scala")
+        ("scheme" . "scheme")
+        ("schem" . "scheme")
+        ("sche" . "scheme")
+        ("sch" . "scheme"))
+      (abbrev '("scheme" "scala" "lisp")))
+(test "original example with prefix"
+      '(("scala" . "scala")
+        ("scal" . "scala")
+        ("sca" . "scala")
+        ("scheme" . "scheme")
+        ("schem" . "scheme")
+        ("sche" . "scheme")
+        ("sch" . "scheme"))
+      (abbrev '("scheme" "scala" "lisp") "s"))
+(test-assert "empty list" (null? (abbrev '())))
+(test "single-element list" '(("c" . "c")) (abbrev '("c")))
+(test-assert "identical elements" (null? (abbrev '("c" "c"))))
+(test-error "non-list argument" (abbrev ""))
+(test-error "non-string element" (abbrev '(())))
+(test-exit)