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extend the developers documentation with some information for readline,editline and haskeline

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krasimir
2009-06-19 13:37:38 +00:00
parent b8776e6e28
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doc/gf-developers.txt
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@@ -37,10 +37,41 @@ http://www.haskell.org/happy/.
Again after the installation check that the tools are available from the terminal.
If they are not then probably you have to update the current search path in your system.
It is also a good idea to have either readline, editline or haskeline installed.
This are libraries for user friendly command line editing. On Linux, without some of this
libraries, the command line editor is very basic. Actually the only key for editing
that you can use is backspace. On Windows you get much more user friendly editor
by default but with it you cannot use the GF specific tab completion. In any case if you
plan to use GF for continuous development then it is recomended to install
some of these libraries. The GF configuration script checks the libraries
in the following order:
- haskeline
- readline
- editline
the first that is found will be used in the compilation. The libraries are also written
in Haskell and could be found on Hackage: http://hackage.haskell.org/packages/archive/pkg-list.html. If you want to check whether,
you already have some of these you can use the following command:
```
$ ghc-pkg list
```
which shows the list of all installed libraries.
Haskeline is the easiest to install because it is a pure Haskell library but currently
with this editor GF doesn't provide word completion. With editline we provide word completion
but the library is harder to install because it is a Haskell binding to a
library with the same name written in C. If you do not have the C library you will have to install
it first. Unfortunately editline does not have good support for Unicode. This will be a problem
if you tend to work on non-Latin language. Finaly readline supports both word completion
and Unicode. Currently this is the best supported library.
Before to get the GF sources you also need Darcs. Darcs is a decentralized revision control system,
see: http://darcs.net/ for more information. There are precompiled packages for many platforms available at
http://darcs.net/DarcsWiki/CategoryBinaries. There is also source code if you want to compile it yourself. Darcs is
also written in Haskell and so you can GHC to compile it.
also written in Haskell and so you can use GHC to compile it.
= Getting the sources =