Implement afv- * (#5969)

Author: kazarmy

librz/core/cmd/cmd_analysis.c

@@ -2401,6 +2401,10 @@ RZ_IPI RzCmdStatus rz_analysis_function_vars_del_handler(RzCore *core, int argc,
 		return RZ_CMD_STATUS_ERROR;
 	}
 	const char *varname = argv[1];
+	if (!strcmp(varname, "*")) {
+		rz_analysis_function_delete_all_vars(fcn);
+		return RZ_CMD_STATUS_OK;
+	}
 	RzAnalysisVar *var = rz_analysis_function_get_var_byname(fcn, varname);
 	if (!var) {
 		RZ_LOG_ERROR("Variable \"%s\" not found.\n", varname);

test/db/cmd/cmd_afv

@@ -39,3 +39,24 @@ EXPECT=<<EOF
 -0x00000028  var_28h:   int64_t
 EOF
 RUN
+
+NAME=afv- *
+FILE=bins/elf/vars-complex-x86_64-bp
+CMDS=<<EOF
+aa
+s sym.varfunc
+pdf~:1..4
+echo
+afv- *
+pdf~:1..4
+EOF
+EXPECT=<<EOF
+/ sym.varfunc(int64_t arg1);
+|           ; arg int64_t arg1 @ rdi
+|           ; var int64_t var_2ch @ stack - 0x2c
+
+/ sym.varfunc();
+|           0x0000115c      push  rbp
+|           0x0000115d      mov   rbp, rsp
+EOF
+RUN