Add start_separator (#2087)

doc/themes.md

@@ -146,6 +146,7 @@ Feel free to take a look at the provided color schemes for reference.
 * `separator_fg`
 * `separator`
 * `end_separator`
+* `start_separator`
 
 # Available icon overrides
 

src/protocol.rs

@@ -38,11 +38,12 @@ where
 
     let mut prev_merge_with_next = false;
 
-    for widgets in blocks
+    for (i, widgets) in blocks
         .iter()
         .map(|x| x.borrow())
         .filter(|x| !x.segments.is_empty())
         .cloned()
+        .enumerate()
     {
         let RenderedBlock {
             mut segments,
@@ -64,7 +65,12 @@ where
             alt = !alt;
         }
 
-        if let Separator::Custom(separator) = &config.theme.separator {
+        let separator = match &config.theme.start_separator {
+            Separator::Custom(_) if i == 0 => &config.theme.start_separator,
+            _ => &config.theme.separator,
+        };
+
+        if let Separator::Custom(separator) = separator {
             if !prev_merge_with_next {
                 // The first widget's BG is used to get the FG color for the current separator
                 let sep_fg = if config.theme.separator_fg == Color::Auto {

src/themes.rs

@@ -54,6 +54,7 @@ pub struct ThemeInner {
     pub alternating_tint_bg: Color,
     pub alternating_tint_fg: Color,
     pub end_separator: Separator,
+    pub start_separator: Separator,
 }
 
 impl Theme {
@@ -76,6 +77,9 @@ impl Theme {
         if let Some(end_separator) = overrides.end_separator {
             self.end_separator = end_separator;
         }
+        if let Some(start_separator) = overrides.start_separator {
+            self.start_separator = start_separator;
+        }
 
         macro_rules! apply {
             ($prop:tt) => {
@@ -128,6 +132,7 @@ pub struct ThemeOverrides {
     pub alternating_tint_bg: Option<ColorOrLink>,
     pub alternating_tint_fg: Option<ColorOrLink>,
     pub end_separator: Option<Separator>,
+    pub start_separator: Option<Separator>,
 }
 
 impl TryFrom<ThemeUserConfig> for Theme {