From 56976a127c081a6a008c81966360003a8711a319 Mon Sep 17 00:00:00 2001
From: Stefano Zacchiroli <zack@upsilon.cc>
Date: Mon, 13 Oct 2014 23:15:23 +0200
Subject: make --columns default to terminal width, as returned by ioctl()

If set, the COLUMNS environment variable will take precedence over terminal
width. However, please note that COLUMNS is usually *not* exported by shells to
child processes, so in most cases COLUMNS will be undefined for ledger---hence
the motivation for this change.

Terminal width is queried using ioctl() on stdin. For the sake of portability
the querying is done only on platform where ioctl() is detected as supported at
compile-time.
---
 src/system.hh.in | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/system.hh.in')

diff --git a/src/system.hh.in b/src/system.hh.in
index eaee14dc..67a218da 100644
--- a/src/system.hh.in
+++ b/src/system.hh.in
@@ -63,6 +63,7 @@
 #define HAVE_REALPATH            @HAVE_REALPATH@
 #define HAVE_GETPWUID            @HAVE_GETPWUID@
 #define HAVE_GETPWNAM            @HAVE_GETPWNAM@
+#define HAVE_IOCTL               @HAVE_IOCTL@
 #define HAVE_ISATTY              @HAVE_ISATTY@
 
 #define HAVE_UNIX_PIPES          @HAVE_UNIX_PIPES@
@@ -151,6 +152,10 @@ typedef std::ostream::pos_type ostream_pos_type;
 #include <pwd.h>
 #endif
 
+#if HAVE_IOCTL
+#include <sys/ioctl.h>
+#endif
+
 #if HAVE_UNIX_PIPES
 #include <sys/types.h>
 #include <sys/wait.h>
-- 
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