From 00cf7ee61dd07dc1be2eb5e506012e400db75e7d Mon Sep 17 00:00:00 2001
From: "C. McEnroe" <june@causal.agency>
Date: Sat, 18 Jul 2020 15:04:59 -0400
Subject: Read from stdin in order

---
 bin/man1/order.1 | 9 +++++++--
 bin/order.y      | 7 +++++++
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/bin/man1/order.1 b/bin/man1/order.1
index f042102f..8e0f9661 100644
--- a/bin/man1/order.1
+++ b/bin/man1/order.1
@@ -1,4 +1,4 @@
-.Dd May 18, 2019
+.Dd July 18, 2020
 .Dt ORDER 1
 .Os
 .
@@ -8,7 +8,7 @@
 .
 .Sh SYNOPSIS
 .Nm
-.Ar expr ...
+.Op Ar expr ...
 .
 .Sh DESCRIPTION
 .Nm
@@ -16,6 +16,11 @@ parses C expressions
 and prints them with parentheses
 according to the precedence rules in
 .Xr operator 7 .
+If no
+.Ar expr
+are given,
+each line of standard input
+is parsed and printed.
 .
 .Sh EXAMPLES
 .Bd -literal
diff --git a/bin/order.y b/bin/order.y
index 0fb882d9..b798e634 100644
--- a/bin/order.y
+++ b/bin/order.y
@@ -183,4 +183,11 @@ int main(int argc, char *argv[]) {
 		input = argv[i];
 		yyparse();
 	}
+	if (argc > 1) return EX_OK;
+	size_t cap = 0;
+	char *buf = NULL;
+	while (0 < getline(&buf, &cap, stdin)) {
+		input = buf;
+		yyparse();
+	}
 }
-- 
cgit 1.4.1