https://github.com/vim-jp/issues/issues/1201

execute-convert-snr.patch

diff --git a/src/eval.c b/src/eval.c
index 4a3cf9912..cdb1d2f4e 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -8109,6 +8109,7 @@ ex_echohl(exarg_T *eap)
 ex_execute(exarg_T *eap)
 {
     char_u	*arg = eap->arg;
+    char_u	*trans_arg;
     typval_T	rettv;
     int		ret = OK;
     char_u	*p;
@@ -8120,6 +8121,27 @@ ex_execute(exarg_T *eap)
 
     if (eap->skip)
 	++emsg_skip;
+
+    /*
+     * Change <SNR> in the middle of argument.
+     * NOTE: If arg starts with "<SNR>", eval1() changes it.
+     */
+    p = vim_strsave(arg);
+    trans_arg = p;
+    while (*p != NUL && *p != '|' && *p != '\n')
+    {
+	if (p[0] == '<' && STRNCMP(p, "<SNR>", 5) == 0)
+	{
+	    /* Change "<SNR>" to the byte sequence. */
+	    p[0] = K_SPECIAL;
+	    p[1] = KS_EXTRA;
+	    p[2] = (int)KE_SNR;
+	    mch_memmove(p + 3, p + 5, STRLEN(p + 5) + 1);
+	}
+	p++;
+    }
+    arg = trans_arg;
+
     while (*arg != NUL && *arg != '|' && *arg != '\n')
     {
 	p = arg;
@@ -8190,6 +8212,8 @@ ex_execute(exarg_T *eap)
 	--emsg_skip;
 
     eap->nextcmd = check_nextcmd(arg);
+
+    vim_free(trans_arg);
 }
 
 /*