suffix and prefix in <number:number-style> and <number:text-style>

[Jos van den Oever]

Look what I found in libs/odf/KoOdfNumberStyles.cpp:

===
//This is an extension of numeric style. For the moment we used namespace of
//oasis format for specific calligra extension. Change it for the future.
void addCalligraNumericStyleExtension(KoXmlWriter &elementWriter, const 
QString &_suffix, const QString &_prefix)
===

This function write tags <number:suffix> and <number:prefix> in the 
<number:number-style> elements and the <number:text-style> elements.

It was introduced in 2005:
===
commit 9964ed1963bbf629d0f6d54d83ab9f1d423db3fc
Author: Laurent Montel <montel at kde.org>
Date:   Sun Feb 27 12:21:40 2005 +0000

     Allow to store prefix/suffix into numeric style
     (koffice extension)
===

This feature is used in Sheets:
  - create empty spreadsheet
  - choose 'Cell Format ..." from the context menu of a cell
  - write 'PREFIX' in the 'Prefix:' field
  - write 'SUFFIX' in the 'Postfix:' field
  - close the dialog
  - The cell now contains this text: "PREFIX 0 SUFFIX"
  - save the file

Saving gives this ODF fragment:
     <number:number-style style:name="N1">
       <number:text>PREFIX</number:text>
       <number:number number:min-integer-digits="1"/>
       <number:text>SUFFIX</number:text>
       <number:suffix>SUFFIX</number:suffix>
       <number:prefix>PREFIX</number:prefix>
     </number:number-style>

Opening it in LibreOffice shows: "PREFIX0SUFFIX" which is correct 
interpretation of the XML. Looking at the cell format dialog shows this 
formatting string:
   "PREFIX"General"SUFFIX"

Saving the spreadsheet again, gives this:
     <number:number-style style:name="N120">
       <number:text>PREFIX</number:text>
       <number:number number:min-integer-digits="1"/>
       <number:text>SUFFIX</number:text>
     </number:number-style>

As expected, the non-standard, prefix and suffix are removed.

Gnumeric can load the file too but does not show the prefix and suffix.

Since the prefix and postfix behavior can be obtained with the 
<number:text/> element, I propose that Calligra removes the code for 
writing <text:suffix> and <text:prefix>.

Cheers,
Jos