View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000722 | luatex | luatex bug | public | 2011-09-30 08:02 | 2015-12-07 19:09 |
| Reporter | Paul Isambert | Assigned To | Hans Hagen | ||
| Priority | normal | Severity | minor | Reproducibility | have not tried |
| Status | closed | Resolution | not fixable | ||
| Product Version | 0.66.0 | ||||
| Target Version | 0.90.0 | Fixed in Version | 0.86.0 | ||
| Summary | 0000722: Strange behavior of ^^ notation. | ||||
| Description | The ^^ notation for character seems to have problems parsing input in some cases. See code below: all other engines typeset "(30)(96)123456789" in the first three cases, while LuaTeX doesn't do so in case 2, but instead typesets "^56789" (with an error, of course), i.e. it seems to detect ^^-notation with 5 superscripts, so it takes the following five characters, realizes it won't do because the first one is a space, forgets to put them back, and then analyzes "(^^)(^^^) = ^^(30) = ^". Why case 2 and 3 differ is a mystery. Case 4-6 do similarly, with "(30)(30)123456789" and (strangely enough)"^6789" in case 5, i.e. it works like "(^^)(^^^)" again, missing a superscript. Finally, there is no wrong analysis in case the ^^-sequence isn't an argument to a command. E.g. "a^^^^^ 123456789" correctly prints "a(30)(96)123456789". | ||||
| Steps To Reproduce | \catcode`\^^^=13 \def^^^{(30)} \catcode`\^^ =13 \def^^ {(96)} \def\do#1{0000001} 1. \do{^^^^^ }123456789\par 2. \do^^^^^ 123456789\par 3. \do ^^^^^ 123456789\par 4. \do{^^^^^^ }123456789\par 5. \do^^^^^^ 123456789\par 6. \do ^^^^^^ 123456789\par \end | ||||
| Tags | No tags attached. | ||||
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This happens because luatex does indeed accept 5- and 6-byte forms of the double-supscript notation. 2. and 5. fail because luatex is still trying to end the control sequence started with 'do' when the caret notation appears in the file. |
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only traditional ^^ and explicit ^^^^XXXX and ^^^^^^XXXXX supported now |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2011-09-30 08:02 | Paul Isambert | New Issue | |
| 2015-10-24 21:05 | Hans Hagen | Assigned To | => Hans Hagen |
| 2015-10-24 21:05 | Hans Hagen | Status | new => acknowledged |
| 2015-10-24 21:06 | Hans Hagen | Assigned To | Hans Hagen => Taco |
| 2015-10-24 21:06 | Hans Hagen | Status | acknowledged => assigned |
| 2015-11-05 11:09 | Hans Hagen | Target Version | => 0.85.0 |
| 2015-11-11 11:50 | Hans Hagen | Target Version | 0.85.0 => 0.90.0 |
| 2015-11-17 17:23 | Taco | Note Added: 0001548 | |
| 2015-11-17 17:23 | Taco | Status | assigned => resolved |
| 2015-11-17 17:23 | Taco | Resolution | open => not fixable |
| 2015-12-07 19:09 | Hans Hagen | Note Added: 0001561 | |
| 2015-12-07 19:09 | Hans Hagen | Status | resolved => closed |
| 2015-12-07 19:09 | Hans Hagen | Assigned To | Taco => Hans Hagen |
| 2015-12-07 19:09 | Hans Hagen | Fixed in Version | => 0.86.0 |
