From 4096dd5257226cfdd43cd24ade33ba1d02784c0f Mon Sep 17 00:00:00 2001
From: Packit Service <user-cont-team+packit-service@redhat.com>
Date: Dec 09 2020 19:54:59 +0000
Subject: Apply patch libpaper-useglibcfallback.patch


patch_name: libpaper-useglibcfallback.patch
present_in_specfile: true

---

diff --git a/lib/paper.c b/lib/paper.c
index d510c85..0039bb0 100644
--- a/lib/paper.c
+++ b/lib/paper.c
@@ -20,6 +20,9 @@
 
 #include <unistd.h>
 
+#include <locale.h>
+#include <langinfo.h>
+
 #include "paper.h"
 
 struct paper {
@@ -108,6 +111,27 @@ in PAPERCONFVAR, fall-back to the old behaviour.
 }
 
 const char* defaultpapername(void) {
+#if defined(LC_PAPER) && defined(_GNU_SOURCE)
+
+#define NL_PAPER_GET(x)         \
+  ((union { char *string; unsigned int word; })nl_langinfo(x)).word
+
+#define PT_TO_MM(v) (unsigned int)((v * 2.54 * 10 / 72) + 0.5)
+
+    const struct paper* pp;
+
+    unsigned int w = NL_PAPER_GET(_NL_PAPER_WIDTH);
+    unsigned int h = NL_PAPER_GET(_NL_PAPER_HEIGHT);
+
+    for (pp = paperfirst(); pp; pp = papernext(pp)) {
+	if (
+             PT_TO_MM(pp->pswidth) == w &&
+             PT_TO_MM(pp->psheight) == h
+           ) {
+	    return pp->name;
+	}
+    }
+#endif
     return PAPERSIZE;
 }
 
diff --git a/man/paperconf.1.in b/man/paperconf.1.in
index 6be58eb..a33faa8 100644
--- a/man/paperconf.1.in
+++ b/man/paperconf.1.in
@@ -48,10 +48,12 @@ looking in order at the
 .B @PAPERSIZEVAR@
 environment variable, at the contents of the file specified by the
 .B @PAPERCONFVAR@
-environment variable, at the contents of
+environment variable, at the contents of the file
 .B @PAPERCONF@
-or by using
-.B letter
+, consulting the values controlled by the
+.B LC_PAPER
+locale setting, or by using
+.B @PAPERSIZE@
 as a fall-back value if none of the other alternatives are successful.
 By default, width and height of the paper are printed in PostScript points.
 .SH OPTIONS
diff --git a/src/paperconf.c b/src/paperconf.c
index d0fa34f..a52ef34 100644
--- a/src/paperconf.c
+++ b/src/paperconf.c
@@ -13,6 +13,7 @@
 #include <errno.h>
 
 #include <paper.h>
+#include <locale.h>
 
 
 /* needed for GNU/Hurd */
@@ -99,6 +100,8 @@ int main(int argc, char** argv)
 
     const char* progname;
 
+    setlocale(LC_ALL, "");
+
     progname = strrchr(*argv, '/');
     if (progname) {
 	++progname;