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+;;; tissue --- Text based issue tracker
+;;; Copyright © 2022 Arun Isaac <arunisaac@systemreboot.net>
+;;;
+;;; This file is part of tissue.
+;;;
+;;; tissue is free software: you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation, either version 3 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; tissue is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;; General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with tissue.  If not, see <https://www.gnu.org/licenses/>.
+
+(import (rnrs hashtables)
+        (srfi srfi-64)
+        (srfi srfi-71)
+        (tissue issue))
+
+(define hashtable-prepend!
+  (@@ (tissue issue) hashtable-prepend!))
+
+(define list-line->alist
+  (@@ (tissue issue) list-line->alist))
+
+(define file-details
+  (@@ (tissue issue) file-details))
+
+(define (hashtable->alist hashtable)
+  (let ((keys values (hashtable-entries hashtable)))
+    (map cons
+         (vector->list keys)
+         (vector->list values))))
+
+(test-begin "issue")
+
+(test-equal "Parse list line with multiple key-value pairs"
+  '((status "unclear")
+    (keywords "dangerous feature" "ui"))
+  (list-line->alist "* keywords: ui, dangerous feature, status: unclear"))
+
+(test-equal "Parse list line with repeated keys"
+  '((keywords "foo")
+    (status "unclear")
+    (keywords "dangerous feature" "ui"))
+  (list-line->alist "* keywords: ui, dangerous feature, status: unclear, keywords: foo"))
+
+(test-equal "Parse key-value list lines case insensitively"
+  '((keywords "dangerous feature" "ui"))
+  (list-line->alist "* Keywords: ui, dangerous feature"))
+
+(test-equal "Return keywords in order"
+  '((keywords "foo" "bar" "fubar"))
+  (call-with-input-string "* keywords: foo, bar, fubar"
+    (compose hashtable->alist file-details)))
+
+(let ((hashtable (make-eq-hashtable)))
+  (hashtable-set! hashtable 'keywords (list "foo" "bar"))
+  (hashtable-prepend! hashtable 'keywords (list "foobar" "fubar"))
+  (test-equal "hashtable-prepend! should prepend, not append"
+    '((keywords "fubar" "foobar" "foo" "bar"))
+    (hashtable->alist hashtable)))
+
+(test-equal "Do not parse definition-like lines as key-value pairs"
+  '()
+  (call-with-input-string "* term: This is a definition of term."
+    (compose hashtable->alist file-details)))
+
+(test-end "issue")