If you want to mimic the simple layout with the format one, you would use this
-format: '[%%h:%%i:(%%I) %%r] %%l: [%%c/%%p] %%m%%n'. This is not completely correct
+format: '[%%h:%%i:(%%i) %%r] %%l: [%%c/%%p] %%m%%n'. This is not completely correct
because the simple layout do not display the message location for messages at
-priority INFO (thus, the fmt is '[%%h:%%i:(%%I) %%r] %%l: [%%c/%%p] %%m%%n' in this
+priority INFO (thus, the fmt is '[%%h:%%i:(%%i) %%r] [%%c/%%p] %%m%%n' in this
case). Moreover, if there is no process name (ie, messages coming from the
library itself, or test programs doing strange things) do not display the
process identity (thus, fmt is '[%%r] %%l: [%%c/%%p] %%m%%n' in that case, and '[%%r]
