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update manual (#20325)

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1. remove two redundant `.`;
1. add information on format string for `importc` just as `exportc`
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Judd 2022-09-09 21:02:15 +08:00 • committed by GitHub
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doc/manual.md
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@ -7893,9 +7893,9 @@ will generate this code:
`cppNonPod` pragma
------------------
The `.cppNonPod` pragma should be used for non-POD `importcpp` types so that they
The `cppNonPod` pragma should be used for non-POD `importcpp` types so that they
work properly (in particular regarding constructor and destructor) for
`.threadvar` variables. This requires `--tlsEmulation:off`:option:.
`threadvar` variables. This requires `--tlsEmulation:off`:option:.
```nim
type Foo {.cppNonPod, importcpp, header: "funs.h".} = object
@ -8127,6 +8127,8 @@ is not set to C, other pragmas are available:
* `importobjc <manual.html#implementation-specific-pragmas-importobjc-pragma>`_
* `importjs <manual.html#implementation-specific-pragmas-importjs-pragma>`_
The string literal passed to `importc` can be a format string:
```Nim
proc p(s: cstring) {.importc: "prefix$1".}
```