diff options
| -rw-r--r-- | modules/custom-comments.el | 5 | ||||
| -rw-r--r-- | tests/test-custom-comments-comment-padded-divider.el | 18 |
2 files changed, 23 insertions, 0 deletions
diff --git a/modules/custom-comments.el b/modules/custom-comments.el index 73d29b0c..7f66424c 100644 --- a/modules/custom-comments.el +++ b/modules/custom-comments.el @@ -200,8 +200,13 @@ PADDING is the number of spaces before the text." (if (string-empty-p cmt-end) 0 (1+ (length cmt-end)))))) (when (< length min-length) (error "Length %d is too small to generate comment (minimum %d)" length min-length)) + ;; Mirror every term the emit path adds: the prologue also inserts a + ;; doubled semicolon (elisp) and a trailing space that this budget used + ;; to omit, rendering dividers LENGTH+2 (elisp) or LENGTH+1 wide. (let* ((available-width (- length current-column-pos (length cmt-start) + (if (equal cmt-start ";") 1 0) ; doubled semicolon + 1 ; space after comment-start (if (string-empty-p cmt-end) 0 (1+ (length cmt-end))))) (line (make-string available-width (string-to-char decoration-char)))) ;; Top line diff --git a/tests/test-custom-comments-comment-padded-divider.el b/tests/test-custom-comments-comment-padded-divider.el index d4c18905..9f2b4fd7 100644 --- a/tests/test-custom-comments-comment-padded-divider.el +++ b/tests/test-custom-comments-comment-padded-divider.el @@ -246,5 +246,23 @@ Returns the buffer string for assertions." ;; Should include comment-end (should (string-match-p "\\*/" result)))) +;;; Rendered width honors LENGTH exactly + +(ert-deftest test-padded-divider-width-matches-length-exactly () + "Normal: each decoration line renders exactly LENGTH wide. +available-width forgot the doubled semicolon (elisp) and the space after +comment-start that the emit path adds, so dividers rendered LENGTH+2 +(elisp) or LENGTH+1 wide, contradicting the docstring." + ;; elisp: lone ";" doubles to ";;" plus a space + (let* ((result (test-padded-divider-at-column 0 ";" "" "-" "x" 40 1)) + (lines (split-string result "\n" t))) + (should (= 40 (length (car lines)))) + (should (= 40 (length (car (last lines)))))) + ;; c-style with an end delimiter and no doubling + (let* ((result (test-padded-divider-at-column 0 "/*" "*/" "-" "x" 40 1)) + (lines (split-string result "\n" t))) + (should (= 40 (length (car lines)))) + (should (= 40 (length (car (last lines))))))) + (provide 'test-custom-comments-comment-padded-divider) ;;; test-custom-comments-comment-padded-divider.el ends here |