Source tree will not display the diff for only one file in my repo even though the file is changed and git status shows it as as changed

I have a project in a GIT repository which I manage through Source Tree. One file only has ceased to display a diff in the right hand pane even though it is shown as changed in the file/status tab and from the git command line. Instead the diff pane has the file name with a green icon with a tick in it. If I open the file and re-save it forcing UTF-8 (As there has been a reported bug about Unicode 16 files) with a text editor, the file is shown with a yellow icon with "Open before" and "Open after" buttons. I simply want source tree to display the diff information for this file again 

17 answers

Increasing the max file size in Tools/Options/Diff/Internal Diff View should solve the issue.

Thanks. The initial "Size Limit (Text)" was 1024 KB. My file was twice that size.

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Thanks it worked for me :)

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Thanks @Guney Ozsan, this solve my problem!

Try fiddling with the "Internal Diff View" settings in Options > Diff.

I had the same problem. In my case, I discovered that git thinks the file is a binary file. Somehow the encoding changed to Unicode. After I changed that back to Ansi it was ok again.

If the differences in a file are only whitespace, and you have the SourceTree diff panel set to ignore whitespace, it will be displayed exactly as you are describing.

Hi Seth; thanks for taking the time to respond

This file has undergone significant change in the text or code should I say. So it is not a white space issue.



I experience the same issue. Just a single file in my repository, and other users of Source Tree also can not see the differences in the diff panel for the same file. I'm wondering if there is a size limitation of some kind. The file currently has 13,459 lines and 1,153,964 characters. Wildly inconvenient to not be able to see the change hunks, which means the features for only saving specific hunks do not work for this file either.

I have the same issue. Real content changes, not whitespace, small file 3kB. SourceTree will not start external diff (which otherwise works with multiple file changes). Problem is with SourceTree - using SourceTree's Terminal and the git diff command works fine

Seth, that fixed my problem, thanks.

Nothing I changed in Options > Diff made any difference.

But what did was... Change from 'Tree View' to either of the 'Flat List' choices.

I have the same issue.

@Seth What would be awesome is if the pane where the diffs/chunks used to show would now show a message that it's not displaying the chunks because you've exceeded the size limit. That would prevent users from thinking the file or local repo became corrupted.

@Damon Overboe It kinda does - there is a ellipses (...) at the bottom of the diff. I won't try and argue that it is noticable, or even particularly meaningful, but it is something. You could file a feature request at if you think it should be more explicit.

@Seth First I meant to say "sorry for posting to an old thread" too. I justified it by this just being a comment :) I did see the ellipses and even clicked on them. The only option given is to "Reverse File" which I know I didn't want, and there is no indication that the file is too large. I had a guess that might be it, and this post confirmed it. I'm not sure that this is worthy of a full-on feature request, but it would add some clarity for a known situation.

I have the same issue. Multiple lines edited on two files, file 1 highlights the first line (doctype declaration) in red as being deleted, the second file highlights all the changed lines as per normal. 

Both files have had the same lines edited, yet one shows the diff, the other just displays like the attached screenshot.

This has been an issue for several weeks now. 

Screen Shot 2016-01-27 at 2.52.16 pm.png

@Aaron Lavers - How does SourceTree's output compare to a git diff command?

@Seth  hey mate, when running through terminal the git process shows diffs as per usual, and in the Wakanda software I'm using it also displays the diffs correctly.
Part of me is wondering if that in itself is an issue - Wakanda performing it's own diffs, or even regenerating whole files (*though I'd still expect to just see one or two lines change).

It is unusual behaviour, though I am getting around it by viewing my diffs both on the github site as well as in the terminal. 

Is there any sourcetree logs I can drag up to share that might help? I'm a bit of a noob with the gui sorry.  

@Aaron Lavers Not much I can help you with there, I'm just another user. If the git diff had the same issue, I'd help you figure what was wrong with your files. However, since the SourceTree diff doesn't match the git diff, I recommend filing a bug report at 

I encountered the same issue. SourceTree would not show up difference on the right pane. This just happens on specific file after we made some change to it.

It turned out that the file encoding was changed to UCS-2 Big Endian by mistake (previously UTF-8). Issue was resolved once we change it back to UTF-8.

SourceTree version

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