Merge pull request #42 from digama0/patch-1

fix off by one error in multiline highlighting

Author: zbraniecki

src/display_list/from_snippet.rs

@@ -427,9 +427,10 @@ fn format_body(
                             });
                         }
 
+                        let end_mark = (end - line_start).saturating_sub(1);
                         let range = (
-                            (end - line_start) - margin_left,
-                            (end - line_start + 1) - margin_left,
+                            end_mark - margin_left,
+                            (end_mark + 1) - margin_left,
                         );
                         body.insert(
                             body_idx + 1,

tests/fixtures/no-color/multiline_annotation.toml

@@ -33,7 +33,7 @@ range = [5, 19]
 [[slices.annotations]]
 label = "expected enum `std::option::Option`, found ()"
 annotation_type = "Error"
-range = [22, 765]
+range = [22, 766]
 [title]
 label = "mismatched types"
 id = "E0308"

tests/fixtures/no-color/multiline_annotation2.toml

@@ -10,7 +10,7 @@ fold = false
 [[slices.annotations]]
 label = "missing fields `lineno`, `content`"
 annotation_type = "Error"
-range = [31, 127]
+range = [31, 128]
 
 [title]
 label = "pattern does not mention fields `lineno`, `content`"