working version with revision id string

boards/uniboard2c/libraries/unb2c_board/quartus/unb2c_board.qsf

@@ -312,7 +312,7 @@ if { [info exists ::env(UNB_COMPILE_STAMPS) ] } {
   set_parameter -name g_stamp_date [clock format [clock seconds] -format {%Y%m%d}]
   set_parameter -name g_stamp_time [clock format [clock seconds] -format {%H%M%S}]
   post_message -type info "RADIOHDL: using GIT $::env(HDL_GIT_REVISION_SHORT)"
-  set_parameter -name g_revision_id [regsub -all {[^0-9]} [exec echo $::env(HDL_GIT_REVISION_SHORT)] ""] 
+  set_parameter -name g_revision_id [regsub -all {[^0-9a-f]} [exec echo $::env(HDL_GIT_REVISION_SHORT)] ""] 
 }
 
 #set_instance_assignment -name FAST_OUTPUT_REGISTER ON -to "ctrl_unb2c_board:u_ctrl|eth:\\gen_eth:u_eth|tech_tse:u_tech_tse|tech_tse_arria10_e1sg:\\gen_ip_arria10_e1sg:u0|ip_arria10_e1sg_tse_sgmii_lvds:\\u_LVDS_tse:u_tse|ip_arria10_e1sg_tse_sgmii_lvds_altera_eth_tse_151_6kz2wlq:eth_tse_0|altera_eth_tse_pcs_pma_nf_lvds:i_tse_pcs_0|tbi_tx_d"

boards/uniboard2c/libraries/unb2c_board/src/vhdl/ctrl_unb2c_board.vhd

@@ -47,7 +47,7 @@ ENTITY ctrl_unb2c_board IS
     g_fw_version   : t_unb2c_board_fw_version := (0, 0);  -- firmware version x.y
     g_stamp_date   : NATURAL := 0;
     g_stamp_time   : NATURAL := 0;
-    g_revision_id  : STRING  := "UNUSED";  -- revision_id, commit hash or number 
+    g_revision_id  : STRING  := "";  -- revision_id, commit hash or number 
     g_design_note  : STRING  := "UNUSED";
     g_base_ip      : STD_LOGIC_VECTOR(16-1 DOWNTO 0) := X"0A63"; -- Base IP address used by unb_osy: 10.99.xx.yy
     g_mm_clk_freq  : NATURAL := c_unb2c_board_mm_clk_freq_125M;

boards/uniboard2c/libraries/unb2c_board/src/vhdl/mms_unb2c_board_system_info.vhd

@@ -34,7 +34,7 @@ ENTITY mms_unb2c_board_system_info IS
     g_fw_version  : t_unb2c_board_fw_version := c_unb2c_board_fw_version;  -- firmware version x.y
     g_stamp_date  : NATURAL := 0;
     g_stamp_time  : NATURAL := 0;
-    g_revision_id : STRING := "";
+    g_revision_id : STRING  := "";
     g_design_note : STRING  := "";
     g_rom_version : NATURAL := 2;
     g_aux         : t_c_unb2c_board_aux := c_unb2c_board_aux               -- aux contains the hardware version