Weird behavior of TCL directory command

[joshStillerman]

Affiliation
MIT PSFC

Version(s) Affected

TCL> show version


MDSplus version: 7.156.0
----------------------
  Release:  alpha_release-7-156-0
  Date:     Mon Oct 27 22:02:21 UTC 2025
  Browse:   https://github.com/MDSplus/mdsplus/tree/alpha_release-7-156-0
  Download: https://github.com/MDSplus/mdsplus/releases/tag/alpha_release-7-156-0

Platform(s)
Ubuntu
The Operating System(s) you're running on.

Installation Method(s)
Kits

Describe the bug
an MDSTCL DIR command on the C-Mod tree for shot 1160930043 after setting default to .SPECTROSCOPY gives strange results.

To Reproduce

TCL> set tree cmod /shot=1160930043
TCL> set def .spectroscopy
TCL> dir

\SPECTROSCOPY::TOP

 :CMOD_ENCODER :EARLS_MPB    :FLIR_CAMERA  :TSTART      

  BOLOMETER     BREM_FLCT     CCD           CHROMEX       CHROMEX2    
  DALSA         DMBOLO        FABRY_PEROT   GAS_INPUT     GPI         
  H0            HALPH_DALPH   HIREX         HIREXJR       HIREXSR     
  HIREX_SR      HTSPECS       ICRF_LIGHT    IMPSPEC       IMPURITIES  
  INFRARED      IR_CAMERA     IR_SPECTRA    JHU_DIV_PER   KAISER      
  KODAK         LOWEUS        LPI           ME_SXR        MOTION      
  MSI           MULTIXRAY     NESOXS        OCEAN_OPTICS  OMA         
  ORNL_SELHF    PPPL_FLIR     SHEAR_INTERF  UMD_SPECT     UVIS        
  VIDEO       

Total of 45 nodes.

\CMOD::TOP

 :VIDEO_DAQ   

Total of 1 node.

\SPECTROSCOPY::TOP

  VIS_SPEC      VUV           XEUS          X_RAY_MONO    X_RAY_PHA   
  Z_METER     

Total of 6 nodes.


Grand total of 52 nodes.
TCL> 

Expected behavior
Only show children and members of the spectroscopy node.

** I have not tried to isolate this problem yet **

[mwinkel-dev]

This issue is waiting for PR #2983 to be reviewed / merged.