New option blame-code-style

src/cli.rs

@@ -491,10 +491,17 @@ pub struct Opt {
     /// "{timestamp}", "{author}", and "{commit}".
     #[structopt(
         long = "blame-format",
-        default_value = "{timestamp:<15} {author:<15.14} {commit:<8} │ "
+        default_value = "{timestamp:<15} {author:<15.14} {commit:<8} │"
     )]
     pub blame_format: String,
 
+    #[structopt(long = "blame-code-style")]
+    /// Style (foreground, background, attributes) for the code section of a line of `git blame`
+    /// output. By default the code will be syntax-highlighted with the same background color as the
+    /// blame format section of the line (the background color is determined by blame-palette). E.g.
+    /// setting this option to 'syntax' will syntax-highlight the code with no background color.
+    pub blame_code_style: Option<String>,
+
     /// Background colors used for git blame lines (space-separated string).
     /// Lines added by the same commit are painted with the same color; colors
     /// are recycled as needed.

src/config.rs

@@ -60,6 +60,7 @@ fn adapt_wrap_max_lines_argument(arg: String) -> usize {
 pub struct Config {
     pub available_terminal_width: usize,
     pub background_color_extends_to_terminal_width: bool,
+    pub blame_code_style: Option<Style>,
     pub blame_format: String,
     pub blame_palette: Vec<String>,
     pub blame_timestamp_format: String,
@@ -241,6 +242,7 @@ impl From<cli::Opt> for Config {
                 .computed
                 .background_color_extends_to_terminal_width,
             blame_format: opt.blame_format,
+            blame_code_style: styles.get("blame-code-style").copied(),
             blame_palette,
             blame_timestamp_format: opt.blame_timestamp_format,
             commit_style: styles["commit-style"],

src/handlers/blame.rs

@@ -100,7 +100,7 @@ impl<'a> StateMachine<'a> {
                 self.state = State::Blame(blame.commit.to_owned(), repeat_blame_line.to_owned());
                 self.painter.syntax_highlight_and_paint_line(
                     &format!("{}\n", blame.code),
-                    StyleSectionSpecifier::Style(style),
+                    StyleSectionSpecifier::Style(self.config.blame_code_style.unwrap_or(style)),
                     self.state.clone(),
                     BgShouldFill::default(),
                 );

src/options/set.rs

@@ -125,6 +125,7 @@ pub fn set_options(
 
     set_options!(
         [
+            blame_code_style,
             blame_format,
             blame_palette,
             blame_timestamp_format,

src/parse_styles.rs

@@ -49,6 +49,19 @@ pub fn parse_styles(opt: &cli::Opt) -> HashMap<String, Style> {
             _ => *style::GIT_DEFAULT_PLUS_STYLE,
         }),
     );
+    if let Some(style_string) = &opt.blame_code_style {
+        styles.insert(
+            "blame-code-style",
+            style_from_str(
+                style_string,
+                None,
+                None,
+                opt.computed.true_color,
+                opt.git_config.as_ref(),
+            ),
+        );
+    };
+
     let mut resolved_styles = resolve_style_references(styles, opt);
     resolved_styles.get_mut("minus-emph-style").unwrap().is_emph = true;
     resolved_styles.get_mut("plus-emph-style").unwrap().is_emph = true;