feat(quickfix): support -q - to read 'errorfile' from stdin (#27303)

Note that this only works when stdin is a pipe.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/nvim/os/fs.c b/src/nvim/os/fs.c
index d80539708d..566d51f30a 100644
--- a/src/nvim/os/fs.c
+++ b/src/nvim/os/fs.c
@@ -55,6 +55,7 @@
 #ifdef MSWIN
 # include "nvim/mbyte.h"
 # include "nvim/option.h"
+# include "nvim/os/os_win_console.h"
 # include "nvim/strings.h"
 #endif
 
@@ -541,6 +542,22 @@ os_dup_dup:
   return ret;
 }
 
+/// Open the file descriptor for stdin.
+int os_open_stdin_fd(void)
+{
+  int stdin_dup_fd;
+  if (stdin_fd > 0) {
+    stdin_dup_fd = stdin_fd;
+  } else {
+    stdin_dup_fd = os_dup(STDIN_FILENO);
+#ifdef MSWIN
+    // Replace the original stdin with the console input handle.
+    os_replace_stdin_to_conin();
+#endif
+  }
+  return stdin_dup_fd;
+}
+
 /// Read from a file
 ///
 /// Handles EINTR and ENOMEM, but not other errors.