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;doc: csv: mention entr for rapid feedback

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Simon Michael 2019-12-09 14:46:02 -08:00
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hledger-lib/hledger_csv.m4.md
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@ -616,6 +616,17 @@ include categorisation.rules
# TIPS
## Rapid feedback
It's a good idea to get rapid feedback while creating/troubleshooting CSV rules.
Here's a good way, using entr from http://eradman.com/entrproject :
```shell
$ ls foo.csv* | entr bash -c 'echo ----; hledger -f foo.csv print desc:SOMEDESC'
```
A desc: query (eg) is used to select just one, or a few, transactions of interest.
"bash -c" is used to run multiple commands, so we can echo a separator each time
the command re-runs, making it easier to read the output.
## Valid CSV
hledger accepts CSV conforming to [RFC 4180](https://tools.ietf.org/html/rfc4180).