[gnumeric] add some comments to cell_calc_layout re bug #662368

[Andreas J. Guelzow <guelzow src gnome org>]

commit df94a2211bcca0e3fdf3a352d3ce5ba3b7e0766a
Author: Andreas J Guelzow <aguelzow pyrshep ca>
Date:   Fri Oct 21 12:24:24 2011 -0600

    add some comments to cell_calc_layout re bug #662368

 src/cell-draw.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/src/cell-draw.c b/src/cell-draw.c
index d9c6f64..5ca2396 100644
--- a/src/cell-draw.c
+++ b/src/cell-draw.c
@@ -189,6 +189,10 @@ cell_calc_layout (G_GNUC_UNUSED GnmCell const *cell, GnmRenderedValue *rv, int y
 		}
 	}
 
+	/* Note that Excel always truncates the cell content only at the */
+	/* bottom even if the request is to align it at the bottom or to */
+	/* center it. We do the same for compatibilities sake. Also see  */
+	/* bug #662368 */
 	switch (rv->effective_valign) {
 #ifndef DEBUG_SWITCH_ENUM
 	default: