Mention {{...}} substitution gotcha in readme (#117)

Fixes #116
This commit is contained in:
Casey Rodarmor 2016-11-14 20:19:35 -08:00 committed by GitHub
parent 91d1e59667
commit 0ac2cdd124

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@ -153,6 +153,28 @@ publish:
rm -rf {{tarball}} {{tardir}}
```
`{{...}}` substitutions may need to be quoted if they contains spaces. For example, if you have the following recipe:
```make
search QUERY:
lynx https://www.google.com/?q={{QUERY}}
```
And you type:
```sh
$ just search "cat toupee"
```
Just will run the command `lynx https://www.google.com/?q=cat toupee`, which will get parsed by `sh` as `lynx`, `https://www.google.com/?q=cat`, and `toupee`, and not the intended `lynx` and `https://www.google.com/?q=cat toupee`.
You can fix this by adding quotes:
```make
search QUERY:
lynx 'https://www.google.com/?q={{QUERY}}'
```
Double-quoted strings support escape sequences:
```make