[MERGE] tools: better placeholder support for _

Support two new syntaxes with `_()` method:

_("This is so %s") % 2019
_("Text with %s placeholders", 42)
_("Text with %(num)s placeholders %(symbol)s", num=42, symbol="🧀")

The main benefit is to have a fallback on the source string if formating the
translated string fails (e.g. "Foo %s" translated "Foo s%").

This PR converted most (but not all) calls to _ using placeholders to use the
new syntax. Hopefully, the remaining ones will be converted in the future and
avoid technical debt.

Use named placeholders when needed. If more than one placeholder is present in a
string, using named placeholder can be beneficial to reorder the placehodler
position (for languages like Japanese that do not use the same phrase
construction). On some sentences, it also brings clarity on the meaning of the
placeholders.

closes odoo/odoo#52155

Task-id: 1853119
Signed-off-by: Martin Trigaux (mat) <mat@odoo.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/addons/fetchmail/models/fetchmail.py b/addons/fetchmail/models/fetchmail.py
index 67dce8c145b..da83677a02c 100644
--- a/addons/fetchmail/models/fetchmail.py
+++ b/addons/fetchmail/models/fetchmail.py
@@ -126,7 +126,7 @@ odoo_mailgate: "|/path/to/odoo-mailgate.py --host=localhost -u %(uid)d -p PASSWO
                 server.write({'state': 'done'})
             except Exception as err:
                 _logger.info("Failed to connect to %s server %s.", server.server_type, server.name, exc_info=True)
-                raise UserError(_("Connection test failed: %s") % tools.ustr(err))
+                raise UserError(_("Connection test failed: %s", tools.ustr(err)))
             finally:
                 try:
                     if connection: