Do not rewrite buffer if nothing is changed.

[daliusd]

I want to use isort on each save/write to file therefore I use following configuration:

:autocmd BufWritePre *.py :Isort

This has one problem however. Even if nothing is changed my cursor jumps back to the beginning of file. This is not ideal fix but it is better than nothing. I think ideal fix would save and restore cursor position.

[qbedard]

Assuming this comparison is pretty quick, it's probably good to have regardless.

However, if the concern is the cursor position, we could add some additional logic to try and return to the last cursor position if possible:

Option 1:

• Capture cursor position (line and col) and text of current line.
• Run isort.
• If the text at cursor position is the same as the stored text, return the cursor to that line/col.
• If it's not, check top/bottom neighbors until we find a match and move the cursor there, probably with a max re-position distance.

Option 2:

• Count the number of lines before either the cursor or a line begins with something that isn't import or from.
• Run isort.
• If the cursor wasn't in the import section, count the import section lines again and move the cursor up/down accordingly.
• Maybe do the neighbor thing like option 1 if the cursor was in the import section.

Neither of these account for pushing imports from deeper in the code up to the top though.

[daliusd]

Honestly, I have found out that ale (https://github.com/w0rp/ale) has isort fixer and does everything what I need. Meanwhile this project actually looks dead.

[fisadev]

Thanks for the work on this! and really sorry for the time this has been dead, personal things getting in the way of me contributing too much to OSS. Getting back to it :)