From 9835e2ae736235810b4ea1c162ca5e65c547e770 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 18 May 2024 04:49:50 +0200
Subject: Merging upstream version 1.71.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 vendor/gix-glob/src/parse.rs | 43 ++++---------------------------------------
 1 file changed, 4 insertions(+), 39 deletions(-)

(limited to 'vendor/gix-glob/src/parse.rs')

diff --git a/vendor/gix-glob/src/parse.rs b/vendor/gix-glob/src/parse.rs
index 3693f88ef..665f459b9 100644
--- a/vendor/gix-glob/src/parse.rs
+++ b/vendor/gix-glob/src/parse.rs
@@ -1,4 +1,4 @@
-use bstr::{BString, ByteSlice};
+use bstr::ByteSlice;
 
 use crate::{pattern, pattern::Mode};
 
@@ -7,7 +7,7 @@ use crate::{pattern, pattern::Mode};
 /// using `pattern::Mode` flags.
 ///
 /// Returns `(pattern, mode, no_wildcard_len)`
-pub fn pattern(mut pat: &[u8]) -> Option<(BString, pattern::Mode, Option<usize>)> {
+pub fn pattern(mut pat: &[u8]) -> Option<(&[u8], pattern::Mode, Option<usize>)> {
     let mut mode = Mode::empty();
     if pat.is_empty() {
         return None;
@@ -28,10 +28,9 @@ pub fn pattern(mut pat: &[u8]) -> Option<(BString, pattern::Mode, Option<usize>)
         mode |= Mode::ABSOLUTE;
         pat = &pat[1..];
     }
-    let mut pat = truncate_non_escaped_trailing_spaces(pat);
     if pat.last() == Some(&b'/') {
         mode |= Mode::MUST_BE_DIR;
-        pat.pop();
+        pat = &pat[..pat.len() - 1];
     }
 
     if !pat.contains(&b'/') {
@@ -41,7 +40,7 @@ pub fn pattern(mut pat: &[u8]) -> Option<(BString, pattern::Mode, Option<usize>)
         mode |= Mode::ENDS_WITH;
     }
 
-    let pos_of_first_wildcard = first_wildcard_pos(&pat);
+    let pos_of_first_wildcard = first_wildcard_pos(pat);
     Some((pat, mode, pos_of_first_wildcard))
 }
 
@@ -50,37 +49,3 @@ fn first_wildcard_pos(pat: &[u8]) -> Option<usize> {
 }
 
 pub(crate) const GLOB_CHARACTERS: &[u8] = br"*?[\";
-
-/// We always copy just because that's ultimately needed anyway, not because we always have to.
-fn truncate_non_escaped_trailing_spaces(buf: &[u8]) -> BString {
-    match buf.rfind_not_byteset(br"\ ") {
-        Some(pos) if pos + 1 == buf.len() => buf.into(), // does not end in (escaped) whitespace
-        None => buf.into(),
-        Some(start_of_non_space) => {
-            // This seems a bit strange but attempts to recreate the git implementation while
-            // actually removing the escape characters before spaces. We leave other backslashes
-            // for escapes to be handled by `glob/globset`.
-            let mut res: BString = buf[..start_of_non_space + 1].into();
-
-            let mut trailing_bytes = buf[start_of_non_space + 1..].iter();
-            let mut bare_spaces = 0;
-            while let Some(b) = trailing_bytes.next() {
-                match b {
-                    b' ' => {
-                        bare_spaces += 1;
-                    }
-                    b'\\' => {
-                        res.extend(std::iter::repeat(b' ').take(bare_spaces));
-                        bare_spaces = 0;
-                        // Skip what follows, like git does, but keep spaces if possible.
-                        if trailing_bytes.next() == Some(&b' ') {
-                            res.push(b' ');
-                        }
-                    }
-                    _ => unreachable!("BUG: this must be either backslash or space"),
-                }
-            }
-            res
-        }
-    }
-}
-- 
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