Issues staging changes to execute permissions

[BinaryMuse]

The GitHub package chokes on files that have filemodes changed from 100644 to 100755 or vise versa. Repro steps:

Scenario 1: only changing file mode

1. Change a non-executable file in a repo to be executable: chmod +x somefile.txt
2. Click on the file in Atom

Atom throws an exception in the diff parser (what-the-diff). It is possible to stage the file by pressing enter on the file or right-clicking and choosing "Stage."

Scenario 2: text and file mode changes

1. Change a non-executable file in a repo to be executable: chmod +x somefile.txt
2. Change the contents of the file
3. Click on the file in Atom

In this case, Atom shows the text changes and allows the user to stage the lines/hunks effected, but once they're all staged, the same issue as the scenario above appears.

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Pretty sure this is a duplicate but I can't seem to find the original issue. ¯\(º_o)/¯

[winstliu]

#1102 is related.