Tool not able to parse the net with $ and report as syntax error, unexpected $undefined

[dineshannayya]

Hi

I see tool not able to parse the .spef file with $ and report as syntax error

OpenSTA 2.3.0 f2e042ecd8 Copyright (c) 2019, Parallax Software, Inc.
License GPLv3: GNU GPL version 3 <http://gnu.org/licenses/gpl.html>

This is free software, and you are free to change and redistribute it
under certain conditions; type `show_copying' for details. 
This program comes with ABSOLUTELY NO WARRANTY; for details type `show_warranty'.
Warning: input/spef/sdrc_top.spef line 6681, syntax error, unexpected $undefined.

Attached the test case and run command

[dineshannayya]

[Uploading exp3.tar.gz…]() Attached the Example and run command. Tool not able to parse net with $ as shows below 6690 u_wb2sdrc.u_cmdfifo.mem[0][0] 6691 u_wb2sdrc.u_cmdfifo.mem[0][10] 6692 u_wb2sdrc.u_cmdfifo.mem[0][11] 6693 u_wb2sdrc.u_cmdfifo.mem[0][12] 6694 u_wb2sdrc.u_cmdfifo.mem[0][13] 6695 u_wb2sdrc.u_cmdfifo.mem[0][14] 6696 u_wb2sdrc.u_cmdfifo.mem[0][15] 6697 u_wb2sdrc.u_cmdfifo.mem[0][16] 6698 u_wb2sdrc.u_cmdfifo.mem[0][17] 6699 u_wb2sdrc.u_cmdfifo.mem[0][18] 6700 u_wb2sdrc.u_cmdfifo.mem[0][19] 6701 u_wb2sdrc.u_cmdfifo.mem[0][1] 6702 u_wb2sdrc.u_cmdfifo.mem[0][20] 6703 u_wb2sdrc.u_cmdfifo.mem[0][21] *6704 u_wb2sdrc.u_cmdfifo.mem[0][22]

[dineshannayya]

exp3.tar.gz Updated the Example

[jjcherry56]

It is illegal spef.

11.3.2.1 Special characters Any character other than alphanumerics and underscore (_) shall be escaped when used in an identifier in a SPEF file.