feat: add --ignore-parent option to override --no-ignore-parent

Add the --ignore-parent flag, mirroring the existing pattern where
--ignore-vcs overrides --no-ignore-vcs. This lets users undo
--no-ignore-parent in aliases or config files.

Closes #1958

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Unreleased
 
+## Features
+- Add `--ignore-parent` option to override `--no-ignore-parent`, see #1958 (@tmchow)
+
 ## Bugfixes
 - Handle invalid working directories gracefully when using `--full-path`, see #1900 (@Xavrir).
 

src/cli.rs

@@ -102,6 +102,7 @@ pub struct Opts {
 
     /// Show search results from files and directories that would otherwise be
     /// ignored by '.gitignore', '.ignore', or '.fdignore' files in parent directories.
+    /// The flag can be overridden with --ignore-parent.
     #[arg(
         long,
         hide_short_help = true,
@@ -110,6 +111,10 @@ pub struct Opts {
     )]
     pub no_ignore_parent: bool,
 
+    /// Overrides --no-ignore-parent
+    #[arg(long, overrides_with = "no_ignore_parent", hide = true, action = ArgAction::SetTrue)]
+    ignore_parent: (),
+
     /// Do not respect the global ignore file
     #[arg(long, hide = true)]
     pub no_global_ignore_file: bool,