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diff --git a/src/docs/string_add.txt b/src/docs/string_add.txt
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-### What it does
-Checks for all instances of `x + _` where `x` is of type
-`String`, but only if [`string_add_assign`](#string_add_assign) does *not*
-match.
-
-### Why is this bad?
-It's not bad in and of itself. However, this particular
-`Add` implementation is asymmetric (the other operand need not be `String`,
-but `x` does), while addition as mathematically defined is symmetric, also
-the `String::push_str(_)` function is a perfectly good replacement.
-Therefore, some dislike it and wish not to have it in their code.
-
-That said, other people think that string addition, having a long tradition
-in other languages is actually fine, which is why we decided to make this
-particular lint `allow` by default.
-
-### Example
-```
-let x = "Hello".to_owned();
-x + ", World";
-```
-
-Use instead:
-```
-let mut x = "Hello".to_owned();
-x.push_str(", World");
-```
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