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Fix comment according to Enricos explanation

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@15743 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Georg Baum 2006-11-05 08:53:52 +00:00
parent a3b98687fa
commit f498157e18
1 changed files with 9 additions and 6 deletions
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15
src/mathed/MathParser.C
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@ -216,13 +216,16 @@ enum CatCode {
CatCode theCatcode[128];
inline CatCode catcode(lyx::char_type c)
inline CatCode catcode(char_type c)
{
/* The fact that we use unicode internally does not change Knuth's TeX
engine. It is still 7bit only, not even latin1 or something like that.
Therefore, the catcode table needs only to have 128 entries.
Everything not in that range is catOther.
*/
/* The only characters that are not catOther lie in the pure ASCII
* range. Therefore theCatcode has only 128 entries.
* TeX itself deals with 8bit characters, so if needed this table
* could be enlarged to 256 entries.
* Any larger value does not make sense, since the fact that we use
* unicode internally does not change Knuth's TeX engine.
* Apart from that a table for the full 21bit UCS4 range would waste
* too much memory. */
if (c >= 128)
return catOther;