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refactor: update readme to reflect regex changes

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Christoph Hasse 2021-07-16 21:56:15 +02:00
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README.md
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@ -1176,17 +1176,6 @@ $ cmake .. -G "Unix Makefiles" # or "MSYS Makefiles"
$ make
```
#### MinGW and Regex
The exiv2 command-line program provides an option **`--grep`** to filter output. The implementation requires the header file **`<regex.h>`** and supporting library to be available during the build. When not available, the option **`--grep`** degrades to a substring match. Because there are several versions of **`<regex.h>`** available on the MinGW platform, detection of regex is always disabled on this platform and uses substring match. The following command reveals if regex is included in your build:
```bash
$ exiv2 -vVg regex
exiv2 0.27.1
have_regex=1
$
```
[TOC](#TOC)
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