Getting an odd diff

From: Jack Adrian Zappa <adrianh.bsc@gmail.com>
Date: Apr 29, 2022, 12:33 UTC
Message-ID: <CAKepmahKwpe_YVrVrS0L3hMAu44W8VgbmvHY2LRpbrC6CQ0AKQ@mail.gmail.com>

So, I have a regex to select words so that I can focus on the actual changes. But then I noticed that it did something weird. It grouped some parenthesis with another word. I generated a minimal example for that line and it was reproducible.

Before: var result = ((res.State == ResultState.Succeeded) && string.IsNullOrEmpty(res.ErrorCode) )? (byte)0 : (byte)1;

After: var result = res.State == ResultState.Succeeded ? (byte)0 : (byte)1;

Diff: $ git diff2 --no-index b a warning: LF will be replaced by CRLF in b. The file will have its original line endings in your working directory warning: LF will be replaced by CRLF in a. The file will have its original line endings in your working directory

diff --git a/b b/a
index 4e3604a8e..619d21e4e 100644
--- a/b
+++ b/a
@@ -1 +1 @@
var result = [-((res-]{+res+}.State == ResultState.Succeeded[-) &&
string.IsNullOrEmpty(res.ErrorCode) )-] ? (byte)0 : (byte)1;

I tried to make a smaller example and it didn't cause the issue.

Before:
var abc = ((xyz.Stuff == other_stuff) && stuff.yay(question) ? yes : no;

After:
var abc = xyz.Stuff == other_stuff ? yes : no;

Diff:
$ git diff2 --no-index b a
warning: LF will be replaced by CRLF in b.
The file will have its original line endings in your working directory
warning: LF will be replaced by CRLF in a.
The file will have its original line endings in your working directory
diff --git a/b b/a
index df18ca34e..1024d6b68 100644
--- a/b
+++ b/a
@@ -1 +1 @@
var abc =[-((-] xyz.Stuff == other_stuff[-) && stuff.yay(question)-] ? yes : no;

So, my question is, what's going on here?

The alias is as follows:
     diff2 = diff --color=always --ignore-space-change
'--word-diff-regex=((\\r\\n?|\\n\\r?)[\\t
]*)?([a-zA-Z_][a-zA-Z_0-9]*|0([xX]([0-9][a-fA-F])+|[0-7]+|[bB][01]+)|[1-9][0-9]*(\\.[0-9]+)?([eE][0-9]+|[pP][0-9a-fA-F])?|\\S)(\\r\\n?|\\n\\r?)?'
-p

Thanks,


JAZ
JAZ