Use visual indent only when rewriting string literal

src/expr.rs

@@ -1955,7 +1955,7 @@ fn rewrite_string_lit(context: &RewriteContext, span: Span, shape: Shape) -> Opt
     // Remove the quote characters.
     let str_lit = &string_lit[1..string_lit.len() - 1];
 
-    rewrite_string(str_lit, &StringFormat::new(shape, context.config))
+    rewrite_string(str_lit, &StringFormat::new(shape.visual_indent(0), context.config))
 }
 
 fn string_requires_rewrite(

src/string.rs

@@ -50,7 +50,7 @@ pub fn rewrite_string<'a>(orig: &str, fmt: &StringFormat<'a>) -> Option<String>
     let stripped_str = re.replace_all(orig, "$1");
 
     let graphemes = UnicodeSegmentation::graphemes(&*stripped_str, false).collect::<Vec<&str>>();
-    let shape = fmt.shape.visual_indent(0);
+    let shape = fmt.shape;
     let indent = shape.indent.to_string(fmt.config);
     let punctuation = ":,;.";