Allow commenting on non-pull-request code

[dmugtasimov]

When reading someone's code I need to ask an author why he/she code that way, not another or ask for clarfication of piece of code for better understanding or suggest an alternative solution for consideration without making pull request. There fore it would useful communication in the context of the code line, so please, allow commenting on any code in repository.

[RSully]

All code has a commit associated with it, and commits allow commenting (on both the commit, and each line within the commit).

[Mithgol]

While viewing a file, use the “Blame” button to get the commit that introduced the last version of the particular line of the source code.

[cirosantilli]

And if you want something other than commit comments, see also: #211

[pb-cdunn]

+1

[maiamcc]

+1 -- would love a way to comment in a PR on code not changed in the commits associated with that PR. (e.g. sometimes new code has rendered old docstrings obsolete and I want to mention this in a comment.)

[holtzermann17]

Here's an example using Hypothesis to "inject" comments. I realise this isn't what people were asking for but it might work in a pinch.
https://via.hypothes.is/https://gist.github.com/caugner/589cac8dbb07b26b34ff

[originalfoo]

It's a PITA to have to track down a commit relevant to the code (especially if it's from many months ago). Would be nice to be able to comment on a line and have github work out which commit it relates to automagically.

[alranel]

I think what we really want is the ability to start a review attached to an entire file at a given commit, and have it listed/linked among issues.

[davidt-secondmind]

+1 -- Someone creates a PR to show me how they have changed the code to achieve a particular purpose. I think there is some code, unchanged in their PR, that should be changed to achieve the purpose of this PR. I would like to be able to comment on this, and for the PR author, the most useful place for me to leave the comment is next to the (as-yet-unchanged) code. In my mental model, the comment relates to this PR, not to an old commit that made the code how it is.

[DevinBirtciel]

Is anything happening with this?

[bordumb]

+1 This would be really nice to have.

Currently, the only way to add line-by-line comments is to go through a formal pull request workflow. Sometimes you want to allow people to more freely push code (ad-hoc/unimportant work). It doesn't make sense to always force people into making pull requests just so to get comments on code.

Any update on this?