reports: BaseODS puts each line of strings in a P tag.

This seems to be the most straightforward way to get Calc to automatically
determine a nice row height for multi-line string cells. This has become a
lot more noticeable now that query-report supports putting postal addresses
in cells.

conservancy_beancount/reports/core.py

@@ -1436,9 +1436,15 @@ class BaseODS(BaseSpreadsheet[RT, ST], metaclass=abc.ABCMeta):
         return self.multilink_cell(self._meta_link_pairs(links), **attrs)
 
     def multiline_cell(self, lines: Iterable[Any], **attrs: Any) -> odf.table.TableCell:
+        item_lines = [str(item).splitlines() for item in lines if item is not None]
+        if any(len(seq) > 1 for seq in item_lines):
+            for seq in item_lines:
+                seq.append('')
+            seq.pop()
         cell = odf.table.TableCell(valuetype='string', **attrs)
-        for line in lines:
-            cell.addElement(odf.text.P(text=str(line)))
+        for seq in item_lines:
+            for line in seq:
+                cell.addElement(odf.text.P(text=line))
         return cell
 
     def multilink_cell(self, links: Iterable[LinkType], **attrs: Any) -> odf.table.TableCell:
@@ -1457,7 +1463,8 @@ class BaseODS(BaseSpreadsheet[RT, ST], metaclass=abc.ABCMeta):
 
     def string_cell(self, text: str, **attrs: Any) -> odf.table.TableCell:
         cell = odf.table.TableCell(valuetype='string', **attrs)
-        cell.addElement(odf.text.P(text=text))
+        for line in text.splitlines():
+            cell.addElement(odf.text.P(text=line))
         return cell
 
     def write_row(self, row: RT) -> None:

tests/test_reports_fund.py

@@ -193,7 +193,9 @@ def check_ods_sheet(sheet, account_balances, *, full):
         cells = iter(testutil.ODSCell.from_row(row))
         try:
             fund = next(cells).firstChild.text
-        except (AttributeError, StopIteration):
+        except AttributeError:
+            fund = ''
+        except StopIteration:
             continue
         try:
             balances = account_bals.pop(fund)