Add DeclareMathSymbol to indexed command definitions

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Added
 * Use xdg-mime to choose a default pdf viewer in the run configuration template
 * Don't insert the right brace when in front of text
+* Add DeclareMathSymbol to indexed command definitions in installed packages
 
 ### Fixed
 * Fix exceptions in structure view when command parameters are missing

src/nl/hannahsten/texifyidea/index/file/LatexExternalCommandDataIndexer.kt

@@ -38,7 +38,7 @@ class LatexExternalCommandDataIndexer : DataIndexer<String, String, FileContent>
          *
          * Similar: \DeclareTextSymbol, \DeclareTextAccent, \DeclareTextComposite, \DeclareTextCompositeCommand
          */
-        val declareTextSymbolRegex = """\\DeclareText(?:Symbol|Accent)\{(?<key>[^}]+)}(?<value>\{(?<encoding>[^}]+)}(?:.+)*?\{(?<slot>[^}]+)})""".toRegex()
+        val declareTextSymbolRegex = """\\Declare(?:Text|Math)(?:Symbol|Accent)\{(?<key>[^}]+)}(?<value>\{(?<encoding>[^}]+)}(?:.+)*?\{(?<slot>[^}]+)})""".toRegex()
         val declareTextCommandRegex = """\\DeclareTextCommand\{(?<key>[^}]+)}\{(?<value>[^}]+)}""".toRegex()
     }
 

test/nl/hannahsten/texifyidea/index/file/LatexExternalCommandDataIndexerTest.kt

@@ -243,6 +243,22 @@ class LatexExternalCommandDataIndexerTest : BasePlatformTestCase() {
         assertEquals("", map["\\textless"])
     }
 
+    fun testDeclareMathSymbol() {
+        val text = """
+            %    It would ok to use \cs{let} for those declared by
+            %    \cs{DeclareMathSymbol} but for a cleaner interface we avoid it
+            %    always (just in case the internals change).
+            %    \begin{macrocode}
+            \DeclareMathSymbol{\leq}{\mathrel}{symbols}{"14}
+            \DeclareMathSymbol{\geq}{\mathrel}{symbols}{"15}
+            %    \end{macrocode}
+        """.trimIndent()
+        val file = myFixture.configureByText("fontdef.dtx", text)
+        val map = LatexExternalCommandDataIndexer().map(MockContent(file))
+        assertEquals(2, map.size)
+        assertEquals("", map["\\leq"])
+    }
+
     fun testDef() {
         val text = """
             \blank@linefalse \def\par{\ifblank@line