ignore "CSI K" (erase until EOL) sequences

src/main.c

@@ -264,6 +264,11 @@ just_strip_it(bool ignore_sgr_errors)
                 {
                     state = STATE_TEXT;
                 }
+                else if (c == 'K')
+                {
+                    // Ignore "Erase in Line" sequence.
+                    state = STATE_TEXT;
+                }
                 else
                 {
                     if (ignore_sgr_errors)
@@ -519,6 +524,16 @@ static inline __attribute__((always_inline)) void ansi2html(
                     );
                     span_outputted = false;
                 }
+                else if (c == 'K')
+                {
+                    // Ignore "Erase in Line" sequence.
+                    state = STATE_TEXT;
+                    if (span && !span_outputted)
+                    {
+                        append_to_buffer(span);
+                        span_outputted = true;
+                    }
+                }
                 else
                 {
                     // The character should be a digit, or semicolon.

tests/csi-k.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -e
+
+. "$(dirname "$0")/".functions.sh
+
+# CSI K is a no-op when stripping OR converting to HTML
+str=$'Hello, \e[0;1mBold\e[K\e[0m world!'
+want=$'Hello, <span style="font-weight:bold;">Bold</span> world!'
+got=$(printf '%s' "$str" | ./ansi2html -p vga)
+str_eq_html "$str" "$want" "$got"
+
+want=$'Hello, Bold world!'
+got=$(printf '%s' "$str" | ./ansi2html -S)
+str_eq_html "$str" "$want" "$got"
+
+done_testing