From b3e9e62599532050fc776c5e8f076915b56c2235 Mon Sep 17 00:00:00 2001
From: David Faulkner <d@davo.co>
Date: Fri, 7 Aug 2026 23:40:47 -0500
Subject: Import official C23 code examples for Modern C (Jens Gustedt, 2024)

- Add official C source files, Makefile, c23-fallback.h, and LICENSE
- Update README.md with study mirror notice
---
 esc.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 esc.c

(limited to 'esc.c')

diff --git a/esc.c b/esc.c
new file mode 100644
index 0000000..717e556
--- /dev/null
+++ b/esc.c
@@ -0,0 +1,12 @@
+#include "esc.h"
+
+void esc_move(FILE* f, int vert, int hori) {
+  if (vert > 0) fprintf(f, ESC_CSI "%dB", vert);
+  else if (vert < 0) fprintf(f, ESC_CSI "%dA", -vert);
+  if (hori > 0) fprintf(f, ESC_CSI "%dC", hori);
+  else if (hori < 0) fprintf(f, ESC_CSI "%dD", -hori);
+}
+
+void esc_goto(FILE* f, unsigned vert, unsigned hori) {
+  fprintf(f, ESC_CSI "%u;%uH", vert, hori);
+}
-- 
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