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Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
cmap [2020/02/23 13:33] christian [Mappings outside the codespace] |
cmap [2020/02/23 13:43] christian [Mappings outside the codespace] |
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===== Monster from the wild ===== | ===== Monster from the wild ===== | ||
+ | CMaps are not well defined. Therefore, there are some interesting variations of them in the wild. Here is a small selection of some issues. | ||
+ | ==== Codespace problems ==== | ||
- | ==== Mappings outside the codespace ==== | + | === Wrong code length |
<code postscript> | <code postscript> | ||
Line 147: | Line 149: | ||
This can be seen often. These illegal mappings are collected into the ''# | This can be seen often. These illegal mappings are collected into the ''# | ||
- | ==== Wrong PostScript ==== | + | === Mappings outside the codespace |
- | using /find instead | + | <code postscript> |
+ | %... | ||
+ | 1 begincodespacerange | ||
+ | < | ||
+ | endcodespacerange | ||
+ | 11 beginbfchar | ||
+ | < | ||
+ | < | ||
+ | < | ||
+ | < | ||
+ | < | ||
+ | %... | ||
+ | </code> | ||
+ | |||
+ | Here, only the first mapping matches the code space. All others fall outside | ||
+ | |||
+ | ==== Wrong PostScript ==== | ||
- | See [[postscript# | + | On one occasion, I saw a CMap where the PostScript used a non-existing operator (''/ |
==== Prevent copying ==== | ==== Prevent copying ==== | ||