From 4873b9a2293ab2314de136dffd2b6e2b45865413 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 31 Mar 2026 13:57:45 +0000
Subject: [PATCH] Polish systemic mount size handling

Agent-Logs-Url: https://github.com/sxyazi/yazi/sessions/89d44d10-de98-42c8-bc7b-dc68c41459bb

Co-authored-by: sxyazi <17523360+sxyazi@users.noreply.github.com>
---
 yazi-fs/src/provider/local/calculator.rs | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/yazi-fs/src/provider/local/calculator.rs b/yazi-fs/src/provider/local/calculator.rs
index ef91ac63..0df0867a 100644
--- a/yazi-fs/src/provider/local/calculator.rs
+++ b/yazi-fs/src/provider/local/calculator.rs
@@ -153,9 +153,11 @@ fn systemic_mounts_from(root: &Path, mounts: &str) -> SystemicMounts {
 			let dist = unmangle_octal(it.next()?);
 			let fstype = unmangle_octal(it.next()?);
 			let dist = PathBuf::from(dist.as_ref());
-			(Partition { fstype: Some(fstype.into_owned().into()), ..Default::default() }.systemic()
-				&& (dist == root || dist.starts_with(root)))
-			.then_some(dist)
+			let systemic = Partition { fstype: Some(fstype.into_owned().into()), ..Default::default() }
+				.systemic();
+			let descendant = dist == root || dist.starts_with(root);
+
+			(systemic && descendant).then_some(dist)
 		})
 		.collect()
 }
@@ -165,6 +167,7 @@ fn unmangle_octal(s: &str) -> std::borrow::Cow<'_, str> {
 	use yazi_shared::replace_cow;
 
 	let mut s = std::borrow::Cow::Borrowed(s);
+	// `/proc/mounts` escapes tabs, newlines, spaces, `#`, and `\` using octal sequences.
 	for (a, b) in
 		[(r"\011", "\t"), (r"\012", "\n"), (r"\040", " "), (r"\043", "#"), (r"\134", r"\")]
 	{