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cmap [2020/02/23 11:17] christian [Mappings outside the codespace] |
cmap [2020/02/23 13:37] christian [Monster from the wild] |
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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. | ||
==== Mappings outside the codespace ==== | ==== Mappings outside the codespace ==== | ||
- | single byte mappings in a double byte codespace | + | <code postscript> |
+ | %... | ||
+ | 1 begincodespacerange | ||
+ | < | ||
+ | endcodespacerange | ||
+ | 27 beginbfchar | ||
+ | <20> < | ||
+ | <2E> < | ||
+ | <43> < | ||
+ | <44> < | ||
+ | <45> < | ||
+ | %... | ||
+ | </ | ||
- | Sometimes CMaps define | + | Here are single byte mappings |
+ | |||
+ | This can be seen often. These illegal mappings are collected into the ''# | ||
==== Wrong PostScript ==== | ==== Wrong PostScript ==== | ||
- | using /find instead of / | + | On one occasion, I saw a CMap where the PostScript used a non-existing operator ('' |
- | + | ||
- | See [[postscript# | + | |
==== Prevent copying ==== | ==== Prevent copying ==== | ||