From ff800b2377883f9df5b73cd5a4bb9e98141d835e Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Sat, 15 Jun 2019 16:21:50 -0700
Subject: Allow piping in commands when launching bb (e.g. `printf '+sel:%s\0'
 * | bb`)

---
 bb.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'bb.c')

diff --git a/bb.c b/bb.c
index 0d8c7f3..a4f3d7b 100644
--- a/bb.c
+++ b/bb.c
@@ -1430,7 +1430,7 @@ int main(int argc, char *argv[])
         sprintf(depthstr, "%d", depth + 1);
         setenv("BB_DEPTH", depthstr, 1);
         setenv("BBCMD", cmdfilename, 1);
-    } else if (cmd_args > 0) {
+    } else {
         char *parent_bbcmd = getenv("BBCMD");
         if (!parent_bbcmd || parent_bbcmd[0] == '\0') {
             initial_path = ".";
@@ -1489,6 +1489,14 @@ int main(int argc, char *argv[])
         }
     }
 
+    struct pollfd pfd = {STDIN_FILENO, POLLIN, 0};
+    if (poll(&pfd, 1, 0) == 1 && pfd.revents & POLLIN) {
+        ssize_t len;
+        char buf[1024];
+        while ((len = read(STDIN_FILENO, buf, sizeof(buf))) > 0)
+            write(cmdfd, buf, (size_t)len);
+    }
+
     if (cmdfd != -1) {
         close(cmdfd);
         cmdfd = -1;
-- 
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