org-colview: Add :indent parameter

* lisp/org-colview.el (org-dblock-write:columnview): Handle :indent
  parameter.
* doc/org.texi (Capturing column view): Document new feature.

doc/org.texi

@@ -5798,6 +5798,8 @@ When set to a number, don't capture entries below this level.
 @item :skip-empty-rows
 When set to @code{t}, skip rows where the only non-empty specifier of the
 column view is @code{ITEM}.
+@item :indent
+When non-@code{nil}, indent each @code{ITEM} field according to its level.
 
 @end table
 

etc/ORG-NEWS

@@ -203,7 +203,11 @@ Custom language environments for LaTeX export can now define the
 string to be inserted during export, using attributes to indicate the
 position of the elements. See variable ~org-latex-custom-lang-environments~
 for more details.
+*** Accept ~:indent~ parameter when capturing column view
+When defining a "columnview" dynamic block, it is now possible to add
+an :indent parameter, much like the one in the clock table.
 
+On the other hand, stars no longer appear in an ITEM field.
 ** New functions
 *** ~org-next-line-empty-p~
 It replaces the deprecated ~next~ argument to ~org-previous-line-empty-p~.

lisp/org-colview.el

@@ -1254,7 +1254,7 @@ PARAMS is a property list of parameters:
 	(skip-empty-rows (plist-get params :skip-empty-rows))
 	(columns-fmt (plist-get params :format))
 	(case-fold-search t)
-	tbl id idpos nfields tmp recalc line
+	tbl id idpos nfields recalc line
 	id-as-string view-file view-pos)
     (when (setq id (plist-get params :id))
       (setq id-as-string (cond ((numberp id) (number-to-string id))
@@ -1290,11 +1290,11 @@ PARAMS is a property list of parameters:
     (move-marker pos nil)
     (when tbl
       (when (plist-get params :hlines)
-	(setq tmp nil)
+	(let (tmp)
 	  (while tbl
 	    (if (eq (car tbl) 'hline)
 		(push (pop tbl) tmp)
-	    (if (string-match "\\` *\\(\\*+\\)" (caar tbl))
+	      (when (string-match "\\` *\\(\\*+\\)" (caar tbl))
 		(if (and (not (eq (car tmp) 'hline))
 			 (or (eq hlines t)
 			     (and (numberp hlines)
@@ -1302,7 +1302,28 @@ PARAMS is a property list of parameters:
 				      hlines))))
 		    (push 'hline tmp)))
 	      (push (pop tbl) tmp)))
-	(setq tbl (nreverse tmp)))
+	  (setq tbl (nreverse tmp))))
+      ;; Remove stars.  Add indentation entities, if required.
+      (let ((index (cl-position
+		    "ITEM"
+		    (mapcar #'cadr org-columns-current-fmt-compiled)
+		    :test #'equal)))
+	(when index
+	  (dolist (row tbl)
+	    (unless (eq row 'hline)
+	      (let ((item (nth index row)))
+		(setf (nth index row)
+		      (replace-regexp-in-string
+		       "\\`\\(\\*+\\) +"
+		       (if (plist-get params :indent)
+			   (lambda (m)
+			     (let ((l (org-reduced-level
+				       (length (match-string 1 m)))))
+			       (if (= l 1) ""
+				 (concat "\\\\_"
+					 (make-string (* 2 (1- l)) ?\s)))))
+			 "")
+		       item)))))))
       (when vlines
 	(setq tbl (mapcar (lambda (x)
 			    (if (eq 'hline x) x (cons "" x)))