Completion of error handling

[elfring]

Would you like to add more error handling for return values from functions like the following?

• fprintf ⇒ usage
• strdup ⇒ parse_sed_like_string

[p-gen]

Can you be more precise? The "usage" function returns no value and the value returned by "parse_sed_like_string" is already tested.

[elfring]

I suggest to avoid ignorance of return values a bit more.
How do you think about to care also if a file output or a string copy really succeeded?

[markschuh]

Looks to me as this issue was resolved on same day - but the issue was not closed.

The return value for strdup are handled now with the changes in 768f82b
And ignoring the return value of *printf functions is usually not considered that a relevant issue - at least not, when this is done during output of help messages to stdout.

[elfring]

💭 Would it matter if output redirection can occasionally fail?