Display unformatted content if pretty printer fails #26
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Fix #25.
If the pretty-printer formatting fails, nothing is displayed.
I didn't analyze the reason why the pretty printer is failing, anyway ABAP Cleaner is much more powerful and does the job fairly well.
While fixing it, I saw some code catching "cx_class_not_existent" errors to handle , but these exceptions are never raised. Instead I created a custom class "zcx_op_dve". I have kept the catching block of "cx_class_not_existent", remove it if you want.
I have defined the variable "unformatted_content" because its name is displayed by "cl_demo_output".