diff --git a/ex.c b/ex.c
index 372a5688..400fe4a2 100644
--- a/ex.c
+++ b/ex.c
@@ -416,6 +416,23 @@ static void *ec_edit(char *loc, char *cmd, char *arg)
 			fd < 0 || rd ? 'f' : 'r');
 	if (!(xvis & 8))
 		ex_print(msg, bar_ft)
+	if (!rd && fd >= 0 && lbuf_len(xb) > 0) {
+		int adv = 0;
+		while (lbuf_len(xb) > adv+1 && xb->ln[adv][0] == '\n')
+			adv++;
+		struct filetype lfts[] = {
+			{FT(sh), "^#!.*/(env[ \t]*)?(sh|bash|zsh|dash)([ \t]*.*)?$"},
+			{FT(py), "^#!.*/(env[ \t]*)?python3?([ \t]*.*)?$"}
+		};
+		char *pats[LEN(lfts)];
+		for (int i = 0; i < LEN(lfts); i++)
+			pats[i] = lfts[i].pat;
+		rset *rs = rset_make(LEN(lfts), pats, 0);
+		int hl = rset_find(rs, xb->ln[adv], NULL, REG_NEWLINE);
+		if (hl >= 0)
+			xb_ft = syn_setft(lfts[hl].ft);
+		rset_free(rs);
+	}
 	return fd < 0 || rd ? xuerr : NULL;
 }