first clear shortcut

config.h

@@ -1,5 +1,7 @@
 /* See LICENSE file for copyright and license details. */
 
+void clearhistory(const Arg *arg);
+
 /*
  * appearance
  *
@@ -201,6 +203,7 @@ static Shortcut shortcuts[] = {
 	{ TERMMOD,			XK_Y,		   selpaste,	   {.i =  0} },
 	{ ShiftMask,		  XK_Insert,	  selpaste,	   {.i =  0} },
 	{ TERMMOD,			XK_Num_Lock,	numlock,		{.i =  0} },
+	{ ControlMask,		XK_L,		   clearhistory,   {.i =  0} },
 };
 
 /*

st.c

@@ -225,6 +225,8 @@ static char base64dec_getc(const char **);
 
 static ssize_t xwrite(int, const char *, size_t);
 
+void clearhistory(const Arg *arg);
+
 /* Globals */
 static Term term;
 static Selection sel;
@@ -239,6 +241,23 @@ static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
 static const Rune utfmin[UTF_SIZ + 1] = {	   0,	0,  0x80,  0x800,  0x10000};
 static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
 
+void
+clearhistory(const Arg *arg) {
+    // Clear the visible screen
+    tclearregion(0, 0, term.col-1, term.row-1);
+    tsetdirt(0, term.row);
+    
+    // Clear the scrollback buffer
+    term.scr = 0;
+    term.histi = 0;
+    for (int i = 0; i < HISTSIZE; i++) {
+        memset(term.hist[i], 0, term.col * sizeof(Line));
+    }
+    
+    // Redraw to apply changes
+    tfulldirt();
+}
+
 ssize_t
 xwrite(int fd, const char *s, size_t len)
 {