Completion of error handling

[elfring]

I have looked at a few source files for your current software. I have noticed that some checks for return codes are missing.

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

• fgetpos ⇒ copy_hunk
• fputs ⇒ output_header_line
• fwrite ⇒ xopen_seekable

[twaugh]

Yes please! If you'd like to do that yourself in a fork, a pull request would be welcomed...

[elfring]

I suggest to avoid ignorance of return values a bit more.

Are you interested to apply aspect-oriented software development? How do you think about to encapsulate error detection and corresponding exception handling as a reusable aspect in your software?