264237 2023-11-05 22:42:33 -0800 [meta] Python CGI should use binary mode for stdout for Windows Python 2025-02-19 04:35:07 -0800 1 1 1 Unclassified WebKit Tools / Tests WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 263425 263701 264238 1 fujii webkit-unassigned kohei.asano webkit-bug-importer oldest_to_newest 1990087 0 fujii 2023-11-05 22:42:33 -0800 [meta] Python CGI should use binary mode for stdout for Windows Python Windows Python automatically converts '\n' to '\r\n' for text mode. 1992029 1 webkit-bug-importer 2023-11-12 22:43:14 -0800 <rdar://problem/118316460> 2091721 2 kohei.asano 2025-02-03 21:52:04 -0800 Although this is just cleaning for pre-existing file only, but we can fix this by inserting sys.stdout.reconfigure(newline=''); ```bash C:\Users\0300093582\tmp>python -c "import sys;sys.stdout.reconfigure(newline='');sys.stdout.write('Hello\nWorld\n')" | xxd 00000000: 4865 6c6c 6f0a 576f 726c 640a Hello.World. ``` also on Linux(Ubuntu) I confirmed no effect appears ```bash [12:22] JPC00234727:tmp | python3 -c "import sys;sys.stdout.reconfigure(newline='');sys.stdout.write('Hello\nWorld\n')" | xxd 00000000: 4865 6c6c 6f0a 576f 726c 640a Hello.World. [12:24] JPC00234727:tmp | cat /etc/os-release PRETTY_NAME="Ubuntu 22.04.4 LTS" ``` 2091733 3 kohei.asano 2025-02-03 22:19:06 -0800 Pull request: https://github.com/WebKit/WebKit/pull/39971 2091735 4 kohei.asano 2025-02-03 22:23:16 -0800 I tried to fix by the following shell script, but its lines are much more than I expected, I'm not so sure it's worth to apply all, but I leave this for notes ``` I inserted by the following shell scripts, and it was  #!/bin/bash TARGET_DIR="LayoutTests" grep -rl 'sys.stdout.write' "$TARGET_DIR" --include="*.py" | while read -r file; do tmpfile=$(mktemp) inserted=0 while IFS= read -r line || [[ -n "$line" ]]; do echo "$line" >> "$tmpfile" if [[ $line =~ ^[[:space:]]*import\ sys$ ]]; then indent=$(echo "$line" | grep -o '^[[:space:]]*') echo "${indent}sys.stdout.reconfigure(newline=\"\") # prevent windows \n -> \n\r conversion" >> "$tmpfile" fi done < "$file" mv "$tmpfile" "$file" done ``` 2095825 5 kohei.asano 2025-02-19 04:35:07 -0800 > Pull request: https://github.com/WebKit/WebKit/pull/39971 I'm sorry, I think PR itself is a little bothering because of too much noises. Also I learned meta issue meaning. Thanks!