Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
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cmap [2020/02/23 11:15] christian [Wrong PostScript] |
cmap [2020/02/23 13:35] christian [Wrong PostScript] |
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| Line 124: | Line 124: | ||
| * the mappings are ordered. This is not strictly prescribed, but recommended by the specifications. | * the mappings are ordered. This is not strictly prescribed, but recommended by the specifications. | ||
| - | ==== Handling malformed CMaps ==== | ||
| - | |||
| - | Sometimes CMaps define mappings which are not covered by the codespace ranges. This can be seen very often in the wild. These illegal mappings are collected into the ''# | ||
| ===== Monster from the wild ===== | ===== Monster from the wild ===== | ||
| + | |||
| ==== 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> < | ||
| + | %... | ||
| + | </ | ||
| - | ==== Wrong PostScript ==== | + | Here are single byte mappings in a double byte codespace which is not correct according to the documentation. |
| - | using /find instead | + | This can be seen often. These illegal mappings are collected into the ''# |
| + | |||
| + | ==== Wrong PostScript ==== | ||
| - | See [[postscript# | + | On one occasion, I saw a CMap where the PostScript used a non-existing operator (''/ |
| ==== Prevent copying ==== | ==== Prevent copying ==== | ||