branch: externals/ftable
commit 1ea20be274f278df3953cea4720f776adad43616
Author: Yuan Fu <caso...@gmail.com>
Commit: Yuan Fu <caso...@gmail.com>
Allow non-table lines before and after table
* ftable.el (ftable--at-table-p, ftable--beginning-of-table,
ftable--end-of-table): New functions.
(ftable--table-info): Use new functions.
---
ftable.el | 54 ++++++++++++++++++++++++++++++++++++++++++++++--------
1 file changed, 46 insertions(+), 8 deletions(-)
diff --git a/ftable.el b/ftable.el
index e0f8136..27178dc 100644
--- a/ftable.el
+++ b/ftable.el
@@ -575,6 +575,46 @@ STYLE can be ’ascii or ’unicode."
(when cell-p
#'table-recognize-region)))))
+(defun ftable--at-table-p ()
+ "Return non-nil if point is in a table."
+ (save-excursion
+ (beginning-of-line)
+ (skip-chars-forward " \t")
+ (member (char-to-string (char-after))
+ (append
+ (cl-loop for elt in ftable-box-charset-alist
+ for charset = (cdr elt)
+ collect (valign-box-char 1 charset)
+ collect (valign-box-char 4 charset)
+ collect (valign-box-char 7 charset)
+ collect (valign-box-char 'v charset))))))
+
+(defun ftable--beginning-of-table ()
+ "Go backward to the beginning of the table at point.
+Assumes point is on a table."
+ ;; This implementation allows non-table lines before a table, e.g.,
+ ;; #+latex: xxx
+ ;; |------+----|
+ (beginning-of-line)
+ (while (and (< (point-min) (point))
+ (ftable--at-table-p))
+ (forward-line -1))
+ (unless (valign--at-table-p)
+ (forward-line 1)))
+
+(defun ftable--end-of-table ()
+ "Go forward to the end of the table at point.
+Assumes point is on a table."
+ (let ((start (point)))
+ (beginning-of-line)
+ (while (and (< (point) (point-max))
+ (ftable--at-table-p))
+ (forward-line 1))
+ (unless (<= (point) start)
+ (skip-chars-backward "\n"))
+ (when (< (point) start)
+ (error "End of table goes backwards"))))
+
(defun ftable--table-info ()
"Return (TEXT BEG END TABLE-CELL-P TABLEP CHARSET).
TEXT is the table’s text. BEG and END are the beginning and end
@@ -583,14 +623,12 @@ is t if the table is managed by table.el. TABLEP is t if
point is
on a table, nil if not. CHARSET is the box drawing charset used
by the table (if there is a table). \(See
`ftable-box-charset-alist'.)"
- (let* ((beg (save-excursion (if (not (search-backward "\n\n" nil t))
- (point-min))
- (skip-chars-forward "\n")
- (point)))
- (end (save-excursion (if (not (search-forward "\n\n" nil t))
- (point-max)
- (skip-chars-backward "\n")
- (point))))
+ (let* ((beg (save-excursion
+ (ftable--beginning-of-table)
+ (point)))
+ (end (save-excursion
+ (ftable--end-of-table)
+ (point)))
(text (buffer-substring-no-properties beg end))
(table-cell-p (text-property-any beg end 'table-cell t)))
(append (list text beg end table-cell-p)
