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****************** TSCHK TOUCHSTONE PARSER BUG REPORT FORM *******************
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INSTRUCTIONS

To report a bug in the TSCHK Touchstone Parser.  Please fill out the top part
of the following form and send the complete form to ibis-bug@eda.org.

A list of reported bugs will be maintained on eda.org.

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PARSER VERSION NUMBER: 2.0.0

PLATFORM (SPARC, HP700, PC, etc.): PC

OS AND VERSION: Microsoft Windows* 7 Enterprise, SP1

REPORTED BY: Michael Mirmak, Intel Corporation

DATE: March 20, 2014

DESCRIPTION OF BUG:

The command tschk2 –canonical <filename> will generate, on standard out, a
Touchstone Version 2.0-compatible file from a 1.x input file, if this is 
possible.

Canonical mode appears to column-align the data in the file for maximum
readability. However, in doing this, the parser adds spaces between the data
fields, in some cases as many as eight or more.  When compared to a ver 1.1
Touchstone file that uses spaces, canonical mode conversion appears to
increase the output file size by multiples of the original file size.

The parser, when performing canonical conversion, ideally should either use 
tabs (which are permitted by the specification) or relax its alignment 
requirements to avoid such dramatic file size increases.


INSERT TOUCHSTONE FILE DEMONSTRATING THE BUG:

Enclosed are three files, showing variations on Example 14 from the 
Touchstone 2.0 specification.

The examples are stored under:

  http://www.eda.org/ibis/bugs/tschk/bug3_example/

example14.s4p is the original Example 14 Touchstone 1.x file, with
varying numbersof spaces between data fields.  The file is 822 bytes in
size.

example14_ts2.s4p is a Touchstone 2.0 file after canonical conversion by 
the parser.  It uses spaces to align the data fields.  The file is 3,235
bytes in size, or almost 4 times the size of the 1.x version.

example14_ts2_tab.s4p is a Touchstone 2.0 file with replacement of spaces 
by tabs.  It is 1,429 bytes in size.


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******************** BELOW FOR ADMINISTRATION AND TRACKING *******************
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BUG NUMBER:  3

SEVERITY: [FATAL, SEVERE, MODERATE, ANNOYING, ENHANCEMENT]  ENHANCEMENT

PRIORITY: [HIGH, MEDIUM, LOW]                               LOW

STATUS: [OPEN, CLOSED, WILL NOT FIX, NOT A BUG]             CLOSED

FIXED VERSION:  2.0.1

FIXED DATE:     August 12, 2021

NOTES ON BUG FIX:

Classified at the April 25, 2014 IBIS Teleconference meeting.  To be
investigated and possibly fixed in a future release.

It was noted that a delimiter flag might be used to specify, for example,
the tab character for alignment.


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