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| Contributions |
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| 2021-04-30 19:05:32  PeterFalth  wrote:
| requestClarification - Return value of XC-WIDTH for control characters
| see: https://forth-standard.org/standard/xchar/XC-WIDTH#contribution-196
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I have been updating my XC-WIDTH function and need to understand what the width should be for control characters ( 1 to $1F and $80 to $9F ). Markus Kuhn's original wcwidth returns -1 for them. I have seen that Julia language returns 0. The function above returns 1. My suggestion would be to return 0. This question also applies to X-WIDTH.
I could provide an updated and more complete function than the above


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| Replies |
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| 2021-04-30 17:16:31  AntonErtl  replies:
| requestClarification - How many cells can be compared ? Must have any limit ?
| see: https://forth-standard.org/standard/string/COMPARE#reply-677
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COMPARE compares characters, not cells.  The maximum number of characters compared is specified by the u1 and u2 arguments.