New issue 195: Documentation: price entries are no longer automatically 
synthesized
https://bitbucket.org/blais/beancount/issues/195/documentation-price-entries-are-no-longer

Ethan Glasser-Camp:

The Beancount Language Syntax page 
(https://docs.google.com/document/d/1wAMVrKIA2qtRGmoVDSUBJGmYZSygUaR0uOMW1GV3YE0/)
 includes the following remark:


```
#!

Every time a Posting appears that has a cost or 
an optional price declared, it uses that cost or 
price to automatically synthesize a Price directive. 
For example, this transaction:

2014-05-23 *
  Assets:Investments:MSFT        -10 MSFT {43.40 USD}
  Assets:Investments:Cash     434.00 USD

automatically becomes this after parsing:

2014-05-23 *
  Assets:Investments:MSFT        -10 MSFT {43.40 USD}
  Assets:Investments:Cash     434.00 USD

2014-05-23 price MSFT  43.40 USD
```

However, this seems not to be true out-of-the-box. This beancount file:

```
2017-01-01 open Assets:MyBank:Cash USD
2017-01-01 open Assets:MyBank:DJIA DJIA
2017-01-01 open Equity:Opening-Balances

2017-01-01 * "Initial balance"
  Assets:MyBank:Cash  10 USD
  Equity:Opening-Balances

2017-03-01 * "Bought some DJIA"
  Assets:MyBank:DJIA  1 DJIA {1 USD}
  Assets:MyBank:Cash
```

combined with this query:

```
bean-report ~/Documents/prices.beancount all_prices
```

does not report any prices. It seems from looking through the documentation 
that the implicit_prices plugin is meant for this use case. Activating the 
implicit_prices plugin causes a price entry to appear in the report as 
expected. Perhaps the documentation should be amended to suggest the use of 
this plugin to generate these price entries. Similarly, the Trading With 
Beancount document at 
https://docs.google.com/document/d/1WjARst_cSxNE-Lq6JnJ5CC41T3WndEsiMw4d46r2694/edit#heading=h.rssekxnidtcf
 refers to the synthesis of a price entry based on a price in a posting, and 
should maybe refer interested users to the plugin.


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