From 4018b2c5075c1cab603ca137ef5f6d68b9cee483 Mon Sep 17 00:00:00 2001
From: Christoph Lohmann <20h@r-36.net>
Date: Sat, 13 Apr 2013 08:48:17 +0200
Subject: [PATCH] Making the copy and pasting consistent.

The copying and pasting in the terminald and GUI world is flawed. Due to the
discussion on the mailinglist it seems that sending '\n' is what GUIs expect
and '\r' what terminal applications want. St now implements that behaviour.
---
 st.c | 35 +++++++++++++++++++++++++++++++----
 1 file changed, 31 insertions(+), 4 deletions(-)

diff --git a/st.c b/st.c
index 93058b9..49a9770 100644
--- a/st.c
+++ b/st.c
@@ -788,9 +788,18 @@ selcopy(void) {
 				memcpy(ptr, p, size);
 				ptr += size;
 			}
-			/* \n at the end of every selected line except for the last one */
+
+			/*
+			 * Copy and pasting of line endings is inconsistent
+			 * in the inconsistent terminal and GUI world.
+			 * The best solution seems like to produce '\n' when
+			 * something is copied from st and convert '\n' to
+			 * '\r', when something to be pasted is received by
+			 * st.
+			 * FIXME: Fix the computer world.
+			 */
 			if(is_selected && y < sel.e.y)
-				*ptr++ = '\r';
+				*ptr++ = '\n';
 		}
 		*ptr = 0;
 	}
@@ -801,7 +810,7 @@ void
 selnotify(XEvent *e) {
 	ulong nitems, ofs, rem;
 	int format;
-	uchar *data;
+	uchar *data, *last, *repl;
 	Atom type;
 
 	ofs = 0;
@@ -812,7 +821,25 @@ selnotify(XEvent *e) {
 			fprintf(stderr, "Clipboard allocation failed\n");
 			return;
 		}
-		ttywrite((const char *) data, nitems * format / 8);
+
+		/*
+		 * As seen in selcopy:
+		 * Line endings are inconsistent in the terminal and GUI world
+		 * copy and pasting. When receiving some selection data,
+		 * replace all '\n' with '\r'.
+		 * FIXME: Fix the computer world.
+		 */
+		repl = data;
+		last = data + nitems * format / 8;
+		while((repl = memchr(repl, '\n', last - repl))) {
+			*repl++ = '\r';
+		}
+
+		last = data + nitems * format / 8;
+		repl = data;
+
+
+		ttywrite((const char *)data, nitems * format / 8);
 		XFree(data);
 		/* number of 32-bit chunks returned */
 		ofs += nitems * format / 32;