Add option to display the file dates being compared

[delphidabbler]

It would be useful to be able to see the file dates.

Maybe add an option to displayed extended information (say -x or -i or -e & --extended-info) that shows, for e.g.:

Comparing:
  FileName1 (last modified 2026-05-02)
to:
  FileName2 (last modified 2026-04-01)
using operator :
  <=
Result:
  False (exit code 0)

The above shows (a) which type of date is being compared (b) the dates (c) the operator being used (d) the exit code.

This option should probably override the state of the -v / --verbose options because otherwise -v or --verbose would always need to make --extended-info work.

[delphidabbler]

> Comparing:
>   FileName1 (last modified 2026-05-02)

Date needs to also include hh:mm:ss and possibly micro seconds.

Need to check if date granularity differs between Windows and Linux.

[delphidabbler]

> Comparing:
>   FileName1 (last modified 2026-05-02)

Date needs to also include hh:mm:ss and possibly micro seconds.

Need to check if date granularity differs between Windows and Linux.

It does. Many file date / times are quoted to nanoseconds in Linux (although there's doubt about the accuracy).

There's some suggested code for outputting the times on the Lazarus forum post File date/time milliseconds resolution/precision.

[delphidabbler]

Implemented at commit 1405100