Add extra 'search' field to list of symbols

Author: michaelnmmeyer

gaiji/DHARMA_gaiji.tsv

@@ -1,4 +1,4 @@
-names	text	description
+names	text	description	search
 danda dandaPlain	|	plain vertical bar
 dandaSerif	|	vertical bar with a headmark or small horizontal line on top
 dandaHooked	|	vertical bar with a hook on top
@@ -56,8 +56,8 @@ gomutraFinalComplex	⁋	final gomūtra involving a more complex design than the
 squiggleVertical braceCurlyClose	⌇	a wavy or zigzag vertical line
 indistinct		symbol that is definitely present, but is so damaged (or unclear in the surrogate for a reason other than damage) that it cannot be assigned to any of the primary categories
 unknown		symbol that cannot be assigned to a genus
-spiral	@	
-pc	௳	
-tēti	௳	
-mācam	௴	
-varuṣam	௵	
+spiral	@
+pc	௳
+tēti	௳
+mācam	௴
+varuṣam	௵

gaiji/readme.md

@@ -8,7 +8,7 @@ Otherwise, the symbol name itself is displayed as a placeholder.
 
 If you want to register a new symbol, you first need to edit the file
 `gaiji.tsv`. You can edit it with Microsoft Excel, LibreOffice Calc, or another
-spreadsheet editor. The file contains four fields:
+spreadsheet editor. The file contains the following fields:
 
 1. `names`. This is a list of symbol names, separated with whitespace. The
    provided names are treated as aliases. By "symbol name", we mean the value
@@ -17,6 +17,9 @@ spreadsheet editor. The file contains four fields:
    textual representation of the symbol. This field is optional.
 3. `description`. A description of the symbol. This is displayed in
    tooltips. This field is optional.
+4. `search`. A string to be used for representing the symbol in the search
+   representation. If not given, the value of the `text` field is used. And if
+   the latter is not given, it defaults to a generic string.
 
 Optionally, you can create an image representing the symbol. This image will be
 displayed in tooltips and in the symbols table (not implemented yet!).