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-rw-r--r--piem-lei.el30
-rw-r--r--tests/piem-lei-tests.el42
2 files changed, 71 insertions, 1 deletions
diff --git a/piem-lei.el b/piem-lei.el
index cf19195..f7ccc6e 100644
--- a/piem-lei.el
+++ b/piem-lei.el
@@ -341,6 +341,33 @@ Return a list with a `piem-lei-msg' object for each root."
thread)
(nreverse roots))))
+(defvar piem-lei-query--subject-split-re
+ (rx string-start
+ ;; Prefix.
+ (group (zero-or-more space)
+ (one-or-more "[" (one-or-more (not (any "]" "\n"))) "]"
+ (one-or-more space)))
+ ;; Main subject. A match consists of at least two islands of
+ ;; non-space characters because there's not much point in
+ ;; eliding one word.
+ (group (one-or-more (not space))
+ (one-or-more space)
+ (not space)
+ (one-or-more anychar))))
+
+(defun piem-lei-query--split-subject (s)
+ (if (string-match piem-lei-query--subject-split-re s)
+ (cons (match-string 1 s) (match-string 2 s))
+ (cons nil s)))
+
+(defun piem-lei-query--elide-subject (s1 s2)
+ (pcase-let ((`(,head2 . ,tail2) (piem-lei-query--split-subject s2)))
+ (if (and s1 head2
+ (let ((tail1 (cdr (piem-lei-query--split-subject s1))))
+ (equal tail1 tail2)))
+ (concat head2 (if (char-displayable-p ?…) "…" "..."))
+ s2)))
+
(defun piem-lei-query--format-thread-marker (level)
(if (= level 0)
""
@@ -400,7 +427,8 @@ Return a list with a `piem-lei-msg' object for each root."
(if (equal subject subject-prev)
""
(concat " "
- (propertize subject
+ (propertize (piem-lei-query--elide-subject
+ subject-prev subject)
'font-lock-face
'piem-lei-query-subject))))
(add-text-properties (line-beginning-position)
diff --git a/tests/piem-lei-tests.el b/tests/piem-lei-tests.el
index e20c62f..71dc109 100644
--- a/tests/piem-lei-tests.el
+++ b/tests/piem-lei-tests.el
@@ -70,5 +70,47 @@
(should-not (piem-lei-query--has-descendant m3 m2))
(should-not (piem-lei-query--has-descendant m3 m1))))
+(ert-deftest piem-lei-query--elide-subject:keep-original ()
+ (should (equal "ghi jlk"
+ (piem-lei-query--elide-subject
+ nil
+ "ghi jlk")))
+ (should (equal "ghi jlk"
+ (piem-lei-query--elide-subject
+ "abc def"
+ "ghi jlk")))
+ (should (equal "abc def"
+ (piem-lei-query--elide-subject
+ "[PATCH] abc def"
+ "abc def")))
+ (should (equal "abc def"
+ (piem-lei-query--elide-subject
+ "[bug#00000] [PATCH] abc def"
+ "abc def")))
+ (should (equal "abc def"
+ (piem-lei-query--elide-subject
+ "[PATCH] abc def"
+ "abc def")))
+ (should (equal "[bug#00000] [PATCH v2] abc"
+ (piem-lei-query--elide-subject
+ "[bug#00000] [PATCH] abc"
+ "[bug#00000] [PATCH v2] abc")))
+ (should (equal "[bug#00000] [PATCH v2] ghi jlk mno"
+ (piem-lei-query--elide-subject
+ "[bug#00000] [PATCH] abc def"
+ "[bug#00000] [PATCH v2] ghi jlk mno"))))
+
+(defvar piem-lei-tests-elide-string (if (char-displayable-p ?…) "…" "..."))
+
+(ert-deftest piem-lei-query--elide-subject:elide ()
+ (should (equal (concat "[PATCH v2] " piem-lei-tests-elide-string)
+ (piem-lei-query--elide-subject
+ "[PATCH] abc def"
+ "[PATCH v2] abc def")))
+ (should (equal (concat "[bug#00000] [PATCH v2] " piem-lei-tests-elide-string)
+ (piem-lei-query--elide-subject
+ "[bug#00000] [PATCH] abc def"
+ "[bug#00000] [PATCH v2] abc def"))))
+
(provide 'piem-lei-tests)
;;; piem-lei-tests.el ends here