Slight improvement to WoMan tbl handling

["Michael Vehrs" <michael.burschik@gmx.de>]

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-- 
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--- woman.el.orig	2010-02-15 14:37:45.000000000 +0100
+++ woman.el	2010-02-17 15:47:29.000000000 +0100
@@ -3774,7 +3774,9 @@
                              (setq fn 'woman2-format-paragraphs))))
                ()
              ;; Find next control line:
-             (set-marker to (woman-find-next-control-line))
+             (if (equal request "TS")
+                 (set-marker to (woman-find-next-control-line "TE"))
+               (set-marker to (woman-find-next-control-line)))
              ;; Call the appropriate function:
              (funcall fn to)))
       (if (not (eobp))			; This should not happen, but ...
@@ -3785,12 +3787,13 @@
       (fset 'insert-and-inherit insert-and-inherit)
       (set-marker to nil))))
 
-(defun woman-find-next-control-line ()
+(defun woman-find-next-control-line (&optional pat)
   "Find and return start of next control line."
 ;  (let ((to (save-excursion
 ;	      (re-search-forward "^\\." nil t))))
 ;    (if to (1- to) (point-max)))
-  (let (to)
+  (let ((pattern (concat "\\(\\\\c\\)?\n[.']" (if pat pat "")))
+        to)
     (save-excursion
       ;; Must handle
       ;; ...\c
@@ -3799,12 +3802,12 @@
       ;; BEWARE THAT THIS CODE MAY BE UNRELIABLE!!!!!
       (while
 	  (and
-	   (setq to (re-search-forward "\\(\\\\c\\)?\n[.']" nil t))
+	   (setq to (re-search-forward pattern nil t))
 	   (match-beginning 1)
 	   (looking-at "br"))
 	(goto-char (match-beginning 0))
 	(woman-delete-line 2)))
-    (if to (1- to) (point-max))))
+    (if to (- to (+ 1 (length pat))) (point-max))))
 
 (defun woman2-PD (to)
   ".PD d -- Set the interparagraph distance to d.
@@ -4560,7 +4563,6 @@
   ".TS -- Start of table code for the tbl processor.
 Format paragraphs upto TO."
   ;; This is a preliminary hack that seems to suffice for lilo.8.
-  (woman-delete-line 1)			; ignore any arguments
   (when woman-emulate-tbl
     ;; Assumes column separator is \t and intercolumn spacing is 3.
     ;; The first line may optionally be a list of options terminated by
@@ -4572,6 +4574,21 @@
     (woman-delete-line 1)
     ;; For each column, find its width and align it:
     (let ((start (point)) (col 1))
+      ;; change T{ T} to tabs
+      (while (search-forward "T{\n" to t)
+        (replace-match "")
+        (catch 'end
+          (while (search-forward "\n" to t)
+            (replace-match " ")
+            (if (looking-at "T}")
+                (progn
+                  (delete-char 2)
+                  (throw 'end t))))))
+      (goto-char start)
+      ;; strip space and headers
+      (while (re-search-forward "^\\.TH\\|\\.sp" to t)
+        (woman-delete-whole-line))
+      (goto-char start)
       (while (prog1 (search-forward "\t" to t) (goto-char start))
 	;; Find current column width:
 	(while (< (point) to)
@@ -4587,7 +4604,24 @@
 	    (delete-char -1)
 	    (insert-char ?\  (- col (current-column))))
 	  (forward-line))
-	(goto-char start))))
+        (goto-char start))
+      ;; find maximum width
+      (let ((max-col 0))
+        (while (search-forward "\n" to t)
+          (backward-char)
+          (if (> (current-column) max-col)
+              (setq max-col (current-column)))
+          (forward-char))          
+        (goto-char start)
+        ;; break lines if they are too long
+        (when (and (> max-col woman-fill-column)
+                   (> woman-fill-column col))
+          (setq max-col woman-fill-column)
+          (woman-break-table col to)
+          (goto-char start))          
+        (while (re-search-forward "^_$" to t)
+          (replace-match (make-string max-col ?_)))
+        (goto-char start))))
   ;; Format table with no filling or adjusting (cf. woman2-nf):
   (setq woman-nofill t)
   (woman2-format-paragraphs to))
@@ -4596,6 +4630,18 @@
   ;; ".TE -- End of table code for the tbl processor."
   ;; Turn filling and adjusting back on.
 
+(defun woman-break-table (start-column to)
+  (while (< (point) to)
+    (move-to-column woman-fill-column)
+    (if (eolp)
+        (forward-line)
+      (if (and (search-backward " " start t)
+               (> (current-column) start-column))
+          (progn
+            (insert-char ?\n 1)
+            (insert-char ?\ (- start-column 5)))
+        (forward-line)))))
+
 \f
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