View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0000387 | file | General | public | 2022-10-01 19:52 | 2022-10-24 19:50 |
| Reporter | rrt | Assigned To | christos | ||
| Priority | normal | Severity | minor | Reproducibility | always |
| Status | resolved | Resolution | fixed | ||
| Product Version | 5.43 | ||||
| Fixed in Version | 5.44 | ||||
| Summary | 0000387: !:strength sometimes causes magic to disappear | ||||
| Description | I was investigating a problem with Lua magic patterns. With the default Lua magic in CVS, I get these results: ``` $ MAGIC=./magic/magic src/file --list|grep "Lua script text executable" Strength = 51@11: Lua script text executable [text/x-lua] Strength = 49@15: Lua script text executable [text/x-lua] Strength = 48@13: Lua script text executable [text/x-lua] Strength = 45@9: Lua script text executable [text/x-lua] ``` This is correct: there are four patterns in the lua magic file. If I then add identical !:strength annotations to each entry, specifically "!:strength * 2", then one of the entries disappears (the one that should now have strength 96): ``` $ MAGIC=./magic/magic src/file --list|grep "Lua script text executable" Strength = 102@12: Lua script text executable [text/x-lua] Strength = 98@18: Lua script text executable [text/x-lua] Strength = 90@9: Lua script text executable [text/x-lua] ``` If I change the multiplier on the missing entry from 2 to 3, it returns: ``` $ MAGIC=./magic/magic src/file --list|grep "Lua script text executable" Strength = 144@15: Lua script text executable [text/x-lua] Strength = 102@12: Lua script text executable [text/x-lua] Strength = 98@18: Lua script text executable [text/x-lua] Strength = 90@9: Lua script text executable [text/x-lua] ``` | ||||
| Tags | No tags attached. | ||||
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Can you please upload the two different minimal magic files you are using to reproduce this? |
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I tried to make a minimal magic file, and in the process I obtained a similar strange result. When I compile just the CVS Lua magic file and then list its contents, I only get two text patterns, although the file contains four patterns. However, when I built the default "everything" magic file, it gives the expected four results. Here is the unexpected result: ``` $ ./src/file -C -m ./magic/Magdir/lua $ MAGIC=./lua.mgc src/file --list Set 0: Binary patterns: Strength = 70@19: Lua bytecode, [] Text patterns: Strength = 51@11: Lua script text executable [text/x-lua] Strength = 48@13: Lua script text executable [text/x-lua] Set 1: Binary patterns: Text patterns: ``` Note that there are only two text pattern results in Set 0. (I am not sure what Set 1 is?) If I run against the complete magic file, I get more patterns that can only come from the `lua` file: ``` $ MAGIC=./magic/magic.mgc src/file --list|grep text/x-lua Strength = 51@11: Lua script text executable [text/x-lua] Strength = 49@15: Lua script text executable [text/x-lua] Strength = 48@105: LuaTex script text executable [text/x-luatex] Strength = 48@13: Lua script text executable [text/x-lua] Strength = 45@9: Lua script text executable [text/x-lua] ``` In this set of results, only the LuaTex [sic] result is not from the `lua` file. I have attached the `lua.mgc` file produced by my system. |
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Yes, the listing was skipping entries. I fixed it now. (apprentice.c 1.338). |
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Many thanks for the prompt fix! |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2022-10-01 19:52 | rrt | New Issue | |
| 2022-10-09 17:22 | christos | Assigned To | => christos |
| 2022-10-09 17:22 | christos | Status | new => assigned |
| 2022-10-09 17:23 | christos | Status | assigned => feedback |
| 2022-10-09 17:23 | christos | Note Added: 0003825 | |
| 2022-10-20 19:19 | rrt | Note Added: 0003843 | |
| 2022-10-20 19:19 | rrt | File Added: lua.mgc | |
| 2022-10-20 19:19 | rrt | Status | feedback => assigned |
| 2022-10-23 13:23 | christos | Status | assigned => feedback |
| 2022-10-23 13:23 | christos | Note Added: 0003844 | |
| 2022-10-24 10:03 | rrt | Note Added: 0003847 | |
| 2022-10-24 10:03 | rrt | Status | feedback => assigned |
| 2022-10-24 19:50 | christos | Status | assigned => resolved |
| 2022-10-24 19:50 | christos | Resolution | open => fixed |
| 2022-10-24 19:50 | christos | Fixed in Version | => 5.44 |
