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{{mirc title|$isutf Identifier}}'''$isutf''' returns the status of the text where 0 = not utf8 (contains invalid utf8 sequence), 1 = seems to be plain text, 2 = seems to contain valid utf8. In older 6.x versions, the result can change depending on which UTF8 setting is active in the /font dialog.
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{{mirc title|$isutf Identifier}}'''$isutf''' returns the status of the text where 0 = not utf8 (contains invalid utf8 sequence), 1 = seems to be plain text, 2 = seems to contain valid utf8
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== Synopsis ==
 
== Synopsis ==
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== Parameters ==
 
== Parameters ==
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* '''text''' - The text you want the status of
 
* '''text''' - The text you want the status of
  
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<source lang="mIRC">//echo -a $isutf(é) $isutf($utfencode(é)) $isutf(plain)</source>
 
<source lang="mIRC">//echo -a $isutf(é) $isutf($utfencode(é)) $isutf(plain)</source>
  
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Note how this indicates whether the text contains the UTF8 codepoints of a UTF8 sequence, not whether the input is a UTF8 string, which all %strings in a unicode-aware client should be, which is why the next command returns "0 2".
 
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<source lang="mIRC">//echo -a $isutf($chr(233)) vs $isutf($chr(195) $+ $chr(169))</source>
 
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If you need to test if a &binvar contains a UTF8 string, you can take advantage of the $regsubex feature where it can output a string into a binvar. If the input is $bvar(&var1,1-).text, you can test whether &var2 is created as an exact replica. Note how $isutf returns 0 for both binvars. On the other hand, the isbinvarutf alias returns 2 for &v1 which contains a UTF8 byte sequence, but returns 0 for &v2 because the cloned UTF8 output from $regsubex was not the same bytes as the original. Note that there's a limit to how long of a binvar can be tested using this method, because $regsubex only permits the $2 string to contain more than approximately $maxlenl *bytes* even when that string has fewer than 4000 UTF8 *characters*.
 
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<source lang="mIRC">
 
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//bset &v1 1 195 169 | bset &v2 1 233 | var -s %a1 $bvar(&v1,1-).text , %a2 $bvar(&v2,1-).text | echo -a $isutf(%a1) $isutf(%a2) vs $isbinvarutf(&v1) $isbinvarutf(&v2)
 
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alias isbinvarutf {
 
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  if ($bvar($1,0) == 0) return 0 | var %len1 $v1
 
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  noop $regsubex(foo,$bvar($1,1-).text,,,&tempvar2)
 
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  var %len2 $bvar(&tempvar2,0) | if (%len1 != %len2) return 0
 
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  if ($calc(%len1 + %len2) < 2000) { if ($bvar($1,1-) == $bvar(&tempvar2,1-)) return 2 | else return 0 }
 
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  else { if ($sha256($1,1) == $sha256(&tempvar2,1)) return 2 | else return 0 }
 
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}
 
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</source>
 
 
== Compatibility ==
 
== Compatibility ==
 
{{mIRC compatibility|6.17}}
 
{{mIRC compatibility|6.17}}
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{{mIRC|$utfencode}}
 
{{mIRC|$utfencode}}
 
{{mIRC|$utfdecode}}
 
{{mIRC|$utfdecode}}
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[[Category:mIRC identifiers]]

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