From 0dab2b18d73e561f5118011a65cc9877bf21c110 Mon Sep 17 00:00:00 2001
From: Nicolas Williams <nico@cryptonector.com>
Date: Sun, 24 Mar 2019 14:39:58 -0500
Subject: [PATCH] Add -b / --binary option for Windows

---
 docs/content/manual/manual.yml |  6 ++++++
 src/main.c                     | 10 ++++++++++
 2 files changed, 16 insertions(+)

diff --git a/docs/content/manual/manual.yml b/docs/content/manual/manual.yml
index ef609a6496..e721ddfa94 100644
--- a/docs/content/manual/manual.yml
+++ b/docs/content/manual/manual.yml
@@ -164,6 +164,12 @@ sections:
         Colors can be configured with the `JQ_COLORS` environment
         variable (see below).
 
+      * `--binary` / `-b`:
+
+        Windows users using WSL, MSYS2, or Cygwin, should use this option
+        when using a native jq.exe, otherwise jq will turn newlines (LFs)
+        into carriage-return-then-newline (CRLF).
+
       * `--ascii-output` / `-a`:
 
         jq usually outputs non-ASCII Unicode codepoints as UTF-8, even
diff --git a/src/main.c b/src/main.c
index 34d2c7e764..9d539eb219 100644
--- a/src/main.c
+++ b/src/main.c
@@ -394,6 +394,16 @@ int main(int argc, char* argv[]) {
         options |= RAW_OUTPUT | RAW_NO_LF;
         if (!short_opts) continue;
       }
+      if (isoption(argv[i], 'b', "binary", &short_opts)) {
+#ifdef WIN32
+        fflush(stdout);
+        fflush(stderr);
+        _setmode(fileno(stdin),  _O_BINARY);
+        _setmode(fileno(stdout), _O_BINARY);
+        _setmode(fileno(stderr), _O_BINARY);
+        if (!short_opts) continue;
+#endif
+      }
       if (isoption(argv[i], 0, "tab", &short_opts)) {
         dumpopts &= ~JV_PRINT_INDENT_FLAGS(7);
         dumpopts |= JV_PRINT_TAB | JV_PRINT_PRETTY;