From 0f1d141905e6648b661d570b5062c25f74360cfe Mon Sep 17 00:00:00 2001
From: Sergio Benitez <sb@sergio.bz>
Date: Mon, 30 Jan 2023 14:41:03 -0800
Subject: [PATCH] Use PCRE git grep to work around macOS git bug.

Git 2.39 on macOS contains a buggy `grep` implementation which, among
other things, fails to interpret the metasequence `\s` in extended regex
mode as space characters and instead interprets it as the literal `s`
character. To avoid this issue, this commit now uses `-P` instead of
`-E` when calling `git grep`, forcing use of PCRE instead.
---
 scripts/test.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/scripts/test.sh b/scripts/test.sh
index a4a82aaa..bb21d184 100755
--- a/scripts/test.sh
+++ b/scripts/test.sh
@@ -34,7 +34,7 @@ function check_versions_match() {
 function check_style() {
   # Ensure there are no tabs in any file.
   local tab=$(printf '\t')
-  local matches=$(git grep -E -I -n "${tab}" "${PROJECT_ROOT}" | grep -v 'LICENSE')
+  local matches=$(git grep -PIn "${tab}" "${PROJECT_ROOT}" | grep -v 'LICENSE')
   if ! [ -z "${matches}" ]; then
     echo "Tab characters were found in the following:"
     echo "${matches}"
@@ -43,7 +43,7 @@ function check_style() {
 
   # Ensure non-comment lines are under 100 characters.
   local n=100
-  local matches=$(git grep -P -I -n "(?=^..{$n,}$)(?!^\s*\/\/[\/!].*$).*" '*.rs')
+  local matches=$(git grep -PIn "(?=^..{$n,}$)(?!^\s*\/\/[\/!].*$).*" '*.rs')
   if ! [ -z "${matches}" ]; then
     echo "Lines longer than $n characters were found in the following:"
     echo "${matches}"
@@ -51,7 +51,7 @@ function check_style() {
   fi
 
   # Ensure there's no trailing whitespace.
-  local matches=$(git grep -E -I -n "\s+$" "${PROJECT_ROOT}" | grep -v -F '.stderr:')
+  local matches=$(git grep -PIn "\s+$" "${PROJECT_ROOT}" | grep -v -F '.stderr:')
   if ! [ -z "${matches}" ]; then
     echo "Trailing whitespace was found in the following:"
     echo "${matches}"