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;doc: paging, box-drawing characters: updates

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Simon Michael 2024-10-20 08:46:11 -10:00
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hledger/hledger.m4.md
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@ -721,24 +721,6 @@ The `-O` option can be combined with `-o` to override the file extension if need
$ hledger balancesheet -o foo.txt -O csv # write CSV to foo.txt
```
## Paging
On unix-like systems, when displaying large output in the terminal,
hledger tries to use a pager when appropriate:
the one specified by the `PAGER` environment variable,
otherwise `less` if available, otherwise `more` if available.
The pager shows one page of text at a time, and lets you scroll around to see more.
While it is active, usually `SPACE` shows the next page, `q` quits, and `?` shows more features.
The pager is expected to display ANSI color and text styling if possible.
hledger adds `R` to the `LESS` and `MORE` environment variables to enable this
in `less` (and in its `more` compatibility mode).
If you use a different pager, you might need to configure it similarly, to avoid seeing junk on screen.
Or you can set the `NO_COLOR` environment variable described below.
You can prevent the use of a pager by providing the `--no-pager` flag at the command line,
or in a config file.
Here are some notes about the various output formats.
### Text output
@ -757,27 +739,42 @@ Multi-period multi-currency reports can often be wider than the window. Besides
helpful techniques for this situation include
`--layout=bare`, `-V`, `cur:`, `--transpose`, `--tree`, `--depth`, `--drop`, switching to html output, etc.
(Help output uses a pager automatically when appropriate, but regular reports do not, currently.)
#### Box-drawing characters
hledger draws simple table borders by default, to minimise the risk of display problems
caused by a terminal/font not supporting box-drawing characters.
But your terminal and font probably do support them, so we recommend
using the `--pretty` flag to show prettier tables in the terminal.
This is a good flag to add to your hledger config file.
#### Colour
hledger tries to detect ANSI color and text styling support and use it when appropriate,
though currently rather minimally: some reports show negative numbers in red,
and help output uses bold text for emphasis.
hledger tries to automatically detect ANSI colour and text styling support and use it when appropriate.
(Currently, it is used rather minimally: some reports show negative numbers in red, and help output uses bold text for emphasis.)
You can override this in the usual ways.
If the `NO_COLOR` environment variable is set, colour will be disabled by default.
Or you can use the `--color/--colour` option with a `y`/`yes` value,
or `n`/`no`, to force colour on or off.
(This option doesn't work in a config file yet.)
You can override this by setting the `NO_COLOR` environment variable to disable it,
or by using the `--color/--colour` option, perhaps in your config file,
with a `y`/`yes` or `n`/`no` value to force it on or off.
#### Box-drawing
#### Paging
By default, hledger draws table borders using ascii characters, to minimise the chance of display problems.
In unix-like environments, when displaying large output in the terminal,
hledger tries to use a pager when appropriate.
(Actually it does this for any output format displayed in the terminal, not just text.)
You can prevent this with the `--pager=no` option, perhaps in your config file.
If your terminal and font support box-drawing characters (they probably do),
you will probably want to use the `--pretty` flag to show prettier tables.
This is a good flag to add to your hledger config file.
It will use the pager specified by the `PAGER` environment variable,
otherwise `less` if available, otherwise `more` if available.
The pager shows one page of text at a time, and lets you scroll around to see more.
While it is active, usually `SPACE` shows the next page, `q` quits, and `?` shows more features.
(And in `less`, `G` jumps to the end, which is useful when you are viewing register output.)
The pager is expected to display hledger's ANSI colour and text styling.
hledger adds `R` to the `LESS` and `MORE` environment variables to enable this for `less` and its `more` compatibility mode.
If you use a different pager, you might need to configure it similarly, to avoid seeing junk on screen.
(Or you can disable colour, as described above.)
### HTML output