I can't believe I didn't have this in git before.

1 files changed, 25 insertions, 0 deletions

diff --git a/chardiff_post.c b/chardiff_post.c
new file mode 100644
index 0000000..2145759
--- /dev/null
+++ b/chardiff_post.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+extern char* program_name;
+
+int
+main (int argc, char* argv[]) {
+	char c;
+	while ((c = getchar()) != EOF) {
+		if (c=='\\') {
+			char c2 = getchar();
+			switch (c2) {
+				case 'n': putchar('\n'); break;
+				case '\\': putchar('\\'); break;
+				default:  putchar(c2);   break;
+			}
+		}
+		char n = getchar();
+		if (n != '\n') {
+			printf(
+				"%s: found other character when expecting newline: %c",
+				argv[0], n);
+		}
+	}
+}
+