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bash: Fix substring expansion with negative offset (#947) 

Co-authored-by: Rico Sta. Cruz <rstacruz@users.noreply.github.com>
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hyww 2020-07-05 19:04:28 +08:00 committed by GitHub
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commit a54b580e01
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@ -154,7 +154,7 @@ echo ${STR/foo/bar} # /path/to/bar.cpp
```bash ```bash
STR="Hello world" STR="Hello world"
echo ${STR:6:5} # "world" echo ${STR:6:5} # "world"
echo ${STR:-5:5} # "world" echo ${STR: -5:5} # "world"
``` ```
```bash ```bash