[Txr-users] New features in GIT.

[Kaz Kylheku]

Hi all,

There are two new features implemented.


One is access to environment variables (works on Win32 also).

The directive

 @(next :env)

causes input to come from the environment vector. It looks like a 
virtual text file in which lines have the form VAR=VALUE.


The other feature is a directive called @(gather). This directive 
allows queries to match text which is out of order. As a simple 
example, consider, say, e-mail headers:

 @(gather)
 From: @FROM
 Subject: @SUBJECT
 To: @TO
 Cc: @CC
 @(end)

These headers can appear in any order. The gather directive takes care 
of that. Plus it has provisions for doing multi-line items, and takes a 
:vars parameter so that you can specify required variables and optional 
variables with default values.

There is no "horizontal flavor" of gather.

Of course, gather works nicely with environment variables:

 @(next :env)
 @(gather (user home (shell "/bin/sh")))
 address@hidden
 address@hidden
 address@hidden
 @(end)

This will fail if the USER or HOME environment variables do not exist. 
If SHELL does not exist, it will default to "/bin/sh".


All is documented,

Cheers ...