Adapt table formats so as to print multiline cells nicely

docs/manpage.rst

@@ -1166,15 +1166,19 @@ Miscellaneous options
 
    This option can also be set using the :envvar:`RFM_SYSTEM` environment variable.
 
-.. option:: --table-format=csv|plain|pretty
+.. option:: --table-format=csv|plain|outline|grid
 
    Set the formatting of tabular output printed by the options :option:`--performance-compare`, :option:`--performance-report` and the options controlling the stored sessions.
 
    The acceptable values are the following:
 
    - ``csv``: Generate CSV output
+   - ``grid``: Generate a table with grid lines
+   - ``outline``: (default) Generate a table with lines outlining the table and the header
    - ``plain``: Generate a plain table without any lines
-   - ``pretty``: (default) Generate a pretty table
+
+   Note that the default ``outline`` format will not render correctly multi-line cells.
+   In this cases, prefer the ``grid`` or ``plain`` formats.
 
    .. versionadded:: 4.7
 

reframe/frontend/cli.py

@@ -645,7 +645,7 @@ def main():
         envvar='RFM_SYSTEM'
     )
     misc_options.add_argument(
-        '--table-format', choices=['csv', 'plain', 'pretty'],
+        '--table-format', choices=['csv', 'plain', 'outline', 'grid'],
         help='Table formatting',
         envvar='RFM_TABLE_FORMAT', configvar='general/table_format'
     )

reframe/frontend/printer.py

@@ -269,8 +269,10 @@ def table(self, data, **kwargs):
         # Map our options to tabulate
         if table_format == 'plain':
             tablefmt = 'plain'
-        elif table_format == 'pretty':
+        elif table_format == 'outline':
             tablefmt = 'mixed_outline'
+        elif table_format == 'grid':
+            tablefmt = 'mixed_grid'
         else:
             raise ValueError(f'invalid table format: {table_format}')
 

reframe/schemas/config.json

@@ -591,7 +591,7 @@
         "general/report_junit": null,
         "general/resolve_module_conflicts": true,
         "general/save_log_files": false,
-        "general/table_format": "pretty",
+        "general/table_format": "outline",
         "general/target_systems": ["*"],
         "general/timestamp_dirs": "%Y%m%dT%H%M%S%z",
         "general/trap_job_errors": false,

unittests/test_cli.py

@@ -1257,7 +1257,7 @@ def test_testlib_inherit_fixture_in_different_files(run_reframe):
     assert 'FAILED' not in stdout
 
 
-@pytest.fixture(params=['csv', 'plain', 'pretty'])
+@pytest.fixture(params=['csv', 'plain', 'grid', 'outline'])
 def table_format(request):
     return request.param