feat(git): adding the EZA_OVERRIDE_GIT env var

This var will override any --git or --git-repos

man/eza.1.md

@@ -274,6 +274,10 @@ Specifies the colour scheme used to highlight files based on their name and kind
 
 For more information on the format of these environment variables, see the [eza_colors.5.md](eza_colors.5.md) manual page.
 
+## `EZA_OVERRIDE_GIT`
+
+Overrides any `--git` or `--git-repos` argument
+
 
 EXIT STATUSES
 =============

src/options/vars.rs

@@ -52,6 +52,9 @@ pub static EZA_GRID_ROWS: &str = "EZA_GRID_ROWS";
 pub static EXA_ICON_SPACING: &str = "EXA_ICON_SPACING";
 pub static EZA_ICON_SPACING: &str = "EZA_ICON_SPACING";
 
+pub static EXA_OVERRIDE_GIT: &str = "EXA_OVERRIDE_GIT";
+pub static EZA_OVERRIDE_GIT: &str = "EZA_OVERRIDE_GIT";
+
 /// Mockable wrapper for `std::env::var_os`.
 pub trait Vars {
     fn get(&self, name: &'static str) -> Option<OsString>;

src/options/view.rs

@@ -231,7 +231,7 @@ impl TableOptions {
         let time_format = TimeFormat::deduce(matches, vars)?;
         let size_format = SizeFormat::deduce(matches)?;
         let user_format = UserFormat::deduce(matches)?;
-        let columns = Columns::deduce(matches)?;
+        let columns = Columns::deduce(matches, vars)?;
         Ok(Self {
             size_format,
             time_format,
@@ -242,14 +242,21 @@ impl TableOptions {
 }
 
 impl Columns {
-    fn deduce(matches: &MatchedFlags<'_>) -> Result<Self, OptionsError> {
+    fn deduce<V: Vars>(matches: &MatchedFlags<'_>, vars: &V) -> Result<Self, OptionsError> {
+        use crate::options::vars;
         let time_types = TimeTypes::deduce(matches)?;
 
-        let git = matches.has(&flags::GIT)? && !matches.has(&flags::NO_GIT)?;
-        let subdir_git_repos = matches.has(&flags::GIT_REPOS)? && !matches.has(&flags::NO_GIT)?;
+        let no_git_env = vars
+            .get_with_fallback(vars::EXA_OVERRIDE_GIT, vars::EZA_OVERRIDE_GIT)
+            .is_some();
+
+        let git = matches.has(&flags::GIT)? && !matches.has(&flags::NO_GIT)? && !no_git_env;
+        let subdir_git_repos =
+            matches.has(&flags::GIT_REPOS)? && !matches.has(&flags::NO_GIT)? && !no_git_env;
         let subdir_git_repos_no_stat = !subdir_git_repos
             && matches.has(&flags::GIT_REPOS_NO_STAT)?
-            && !matches.has(&flags::NO_GIT)?;
+            && !matches.has(&flags::NO_GIT)?
+            && !no_git_env;
 
         let blocksize = matches.has(&flags::BLOCKSIZE)?;
         let group = matches.has(&flags::GROUP)?;