Fix ignore rules

yama/src/bin/yamascan.rs

@@ -52,7 +52,11 @@ pub enum YamaScanCommand {
 
     /// Show dust-style usage graph of the current directory, excluding excluded files.
     #[command(alias = "du")]
-    Usage {},
+    Usage {
+        /// Specify an ignore rule. Can use multiple times.
+        #[arg(short = 'I', long = "ignore")]
+        ignore: Vec<String>,
+    },
 }
 
 #[tokio::main]
@@ -66,7 +70,7 @@ async fn main() -> eyre::Result<()> {
         .init();
 
     match YamaScanCommand::parse() {
-        YamaScanCommand::Usage {} => {
+        YamaScanCommand::Usage { ignore } => {
             let idd = InitialDisplayData {
                 short_paths: true,
                 is_reversed: false,
@@ -76,7 +80,7 @@ async fn main() -> eyre::Result<()> {
                 iso: false,
             };
 
-            let scan = scan::scan(Path::new("."), &Vec::new()).context("Couldn't scan")?;
+            let scan = scan::scan(Path::new("."), &ignore).context("Couldn't scan")?;
             let top_nodes = assemble_display_tree_from_scan_entries(scan)?.children;
 
             let root_display_node = dust_style_filetree_display::filter::get_biggest(

yama/src/scan.rs

@@ -1,4 +1,5 @@
 use eyre::{bail, eyre, Context, ContextCompat};
+use ignore::overrides::OverrideBuilder;
 use ignore::WalkBuilder;
 use patricia_tree::PatriciaMap;
 use std::cmp::max;
@@ -117,9 +118,17 @@ pub fn scan(root: &Path, ignores: &Vec<String>) -> eyre::Result<PatriciaMap<Scan
         .follow_links(false)
         .same_file_system(true);
 
+    let mut overrides = OverrideBuilder::new(root);
     for ign in ignores {
-        walker.add_ignore(ign);
+        overrides
+            .add(&("!".to_owned() + ign))
+            .with_context(|| format!("failed to add ignore rule: {ign:?}"))?;
     }
+    walker.overrides(
+        overrides
+            .build()
+            .context("failed to create overrides with ignore entries")?,
+    );
     let walker = walker.build();
 
     for entry in walker {