refactor: NO_COLOR, highlight and render_error (#915)

- If NO_COLOR is enabled, AIChat will not output any ANSI color codes.
- `config.highlight` will only affect rendering markdown
- improve rendering error

1 files changed, 2 insertions, 12 deletions

diff --git a/src/config/mod.rs b/src/config/mod.rs
index 1c669a7..8e3e2c3 100644
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -1969,10 +1969,8 @@ impl Config {
         if let Some(Some(v)) = read_env_bool("highlight") {
             self.highlight = v;
         }
-        if let Ok(value) = env::var("NO_COLOR") {
-            if let Some(false) = parse_bool(&value) {
-                self.highlight = false;
-            }
+        if *NO_COLOR {
+            self.highlight = false;
         }
         if let Some(Some(v)) = read_env_bool("light_theme") {
             self.light_theme = v;
@@ -2166,14 +2164,6 @@ fn read_env_bool(key: &str) -> Option<Option<bool>> {
     Some(parse_bool(&value))
 }
 
-fn parse_bool(value: &str) -> Option<bool> {
-    match value {
-        "1" | "true" => Some(true),
-        "0" | "false" => Some(false),
-        _ => None,
-    }
-}
-
 fn complete_bool(value: bool) -> Vec<String> {
     vec![(!value).to_string()]
 }