fix(term): input: invalid x10 mouse position calculation

exp/term/input/driver_windows.go

@@ -6,7 +6,6 @@ package input
 import (
 	"errors"
 	"fmt"
-	"log"
 
 	"github.com/charmbracelet/x/exp/term/ansi"
 	"github.com/erikgeiser/coninput"
@@ -130,7 +129,6 @@ loop:
 	}
 
 	return events
-
 }
 
 func parseConInputEvent(event coninput.InputRecord, ps *coninput.ButtonState) Event {
@@ -160,8 +158,6 @@ func mouseEventButton(p, s coninput.ButtonState) (button MouseButton, isRelease
 		isRelease = true
 	}
 
-	log.Printf("p: %s, s: %s\r\n", p, s)
-
 	if btn == 0 {
 		switch {
 		case s&coninput.FROM_LEFT_1ST_BUTTON_PRESSED > 0:

exp/term/input/parse.go

@@ -1,7 +1,6 @@
 package input
 
 import (
-	"log"
 	"unicode/utf8"
 
 	"github.com/charmbracelet/x/exp/term/ansi"
@@ -111,6 +110,7 @@ func parseCsi(p []byte) (int, Event) {
 	// Add the final byte
 	final = p[i]
 	seq = append(seq, p[i])
+	i++
 
 	switch initial {
 	case '?':
@@ -190,10 +190,10 @@ func parseCsi(p []byte) (int, Event) {
 		return len(seq), KeyDownEvent{Sym: KeyTab, Mod: Shift}
 	case 'M':
 		// Handle X10 mouse
-		if i+3 >= len(p) {
+		if i+3 > len(p) {
 			return len(seq), UnknownCsiEvent(seq)
 		}
-		return len(seq) + 3, parseX10MouseEvent(append(seq, p[i+1:i+3]...))
+		return len(seq) + 3, parseX10MouseEvent(append(seq, p[i:i+3]...))
 	case 'u':
 		// Kitty keyboard protocol
 		params := ansi.Params(p[start:end])
@@ -583,8 +583,6 @@ func parseDcs(p []byte) (int, Event) {
 		seq = append(seq, p[i])
 	}
 
-	log.Printf("seq: %q\r\n", seq)
-
 	switch final {
 	case 'r':
 		inters := p[istart:iend] // intermediates