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docs: extract template function to their own section 

The functions were located in the data section, which was suboptimal.
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Reto Brunner 2020-05-02 14:06:01 +02:00 committed by Drew DeVault
parent b03a73726d
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doc/aerc-templates.7.scd
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@ -7,7 +7,7 @@ aerc-templates - template file specification for *aerc*(1)
# SYNOPSIS
aerc uses the go "text/template" package for the template parsing.
Refer to the go documentation for the general syntax.
Refer to the go text/template documentation for the general syntax.
Template files are composed of headers, followed by a newline, followed by the
body text.
@ -62,26 +62,12 @@ available always.
- OriginalDate: Date and Time when the original message of received.
Available for quoted reply and forward.
The _dateFormat_ function can be used to format the date and time.
The _toLocal_ function converts a time to the local time zone.
Example:
Format the date to go's time package format options.
```
{{dateFormat .Date "Mon Jan 2 15:04:05 -0700 MST 2006"}}
```
Format the date in the local time zone.
```
{{dateFormat (.Date | toLocal) "Mon Jan 2 15:04:05 -0700 MST 2006"}}
```
To format the date fields, _dateFormat_ and _toLocal_ are provided.
Refer to the _TEMPLATE FUNCTIONS_ section for details.
*Subject*
The subject of the email is available for quoted reply and forward.
Example:
{{.Subject}}
*MIME Type*
@ -91,33 +77,58 @@ available always.
"text/plain" or "text/html".
*Original Message*
When using quoted reply or forward, the original message is available.
It can be used using two functions that are available to templates.
When using quoted reply or forward, the original message is available in a
field called ".OriginalText".
Example:
```
{{.OriginalText}}
```
# TEMPLATE FUNCTIONS
Besides the standard functions described in go's text/template documentation,
aerc provides the following additional functions:
*wrap*
Wrap the original text to the specified number of characters per line.
_wrap_ function can be used to wrap the original text to a number
of characters per line.
```
{{wrap 72 .OriginalText}}
```
_quote_ function prepends each line with "> ".
*quote*
Prepends each line with "> ".
```
{{quote .OriginalText}}
```
_exec_ function execute external command to process message.
*exec*
Execute external command, provide the second argument to its stdin.
```
{{exec `/usr/local/share/aerc/filters/html`}}
{{exec `/usr/local/share/aerc/filters/html` .OriginalText}}
```
All of the above can be chained together if needed, for example.
*toLocal*
Convert the date to the local timezone as specified by the locale.
```
{{exec `/usr/local/share/aerc/filters/html` .OriginalText | wrap 72 | quote}}
{{toLocal .Date}}
```
Automatic HTML parsing can be achieved.
*dateFormat*
Format date and time according to the format passed as the second argument.
The format must be specified according to go's time package format.
```
{{dateFormat .Date "Mon Jan 2 15:04:05 -0700 MST 2006"}}
```
*Function chaining*
All of the template functions can be chained together if needed.
Example: Automatic HTML parsing for text/html mime type messages
```
{{if eq .OriginalMIMEType "text/html"}}
{{exec `/usr/local/share/aerc/filters/html` .OriginalText | wrap 72 | quote}}