Add rust_phantom_style and rust_region_style config settings.

Fixes rust-lang#182.

Author: ehuss

README.md

@@ -68,6 +68,8 @@ There are a variety of settings (see [Settings](#settings)) for controlling the
 | `rust_syntax_hide_warnings` | `false` | If true, will not display warning messages. |
 | `rust_syntax_error_color` | `"#F00"` | Color of error messages. |
 | `rust_syntax_warning_color` | `"#FF0"` | Color of warning messages. |
+| `rust_phantom_style` | `"normal"` | How to display inline messages.  Either `normal` or `none`. |
+| `rust_region_style` | `"outline"` | How to highlight messages.  Either `outline` or `none`. |
 
 Here is an example:
 ![testingrust](https://cloud.githubusercontent.com/assets/43198/22944409/7780ab9a-f2a5-11e6-87ea-0e253d6c40f6.png)

RustEnhanced.sublime-settings

@@ -22,6 +22,16 @@
     // running Cargo.
     "rust_include_shell_env": true,
 
+    // For errors/warnings, how to show the inline message.
+    // "normal" - Shows the message inline.
+    // "none" - Do not show the message inline.
+    "rust_phantom_style": "normal",
+
+    // For errors/warnings, how to highlight the region of the error.
+    // "outline" - Outlines the region.
+    // "none" - No outlining.
+    "rust_region_style": "outline",
+
     // If your cargo project has several build targets, it's possible to specify mapping of
     // source code filenames to the target names to enable syntax checking.
     // "projects": {

rust/messages.py

@@ -93,6 +93,8 @@ def draw_all_region_highlights(window):
 
 
 def _draw_region_highlights(view, messages):
+    if util.get_setting('rust_region_style', 'outline') == 'none':
+        return
     error_regions = []
     info_regions = []
     error_region_set = set()
@@ -123,6 +125,8 @@ def _draw_region_highlights(view, messages):
 
 
 def _show_phantom(view, level, span, message):
+    if util.get_setting('rust_phantom_style', 'normal') == 'none':
+        return
     region = _span_to_region(view, span)
     # For some reason, with LAYOUT_BELOW, if you have a multi-line
     # region, the phantom is only displayed under the first line.  I