move from fixed flags to list of tags (matching command list evaluation names) for context menu command filtering; pull out code for filling command regs from contextual expressions; add mechanism for contextualizing a whole query, so that we can spawn command listers within the context of some other evaluation, which we'd like to fill registers with (e.g. right-clicking a module -> spawn a module command list, contextualized by the module evaluation itself

src/raddbg/raddbg_core.h

@@ -88,11 +88,6 @@ enum
 {
   RD_CmdKindFlag_ListInUI            = (1<<0),
   RD_CmdKindFlag_ListInIPCDocs       = (1<<1),
-  RD_CmdKindFlag_ListInTab           = (1<<2),
-  RD_CmdKindFlag_ListInTextPt        = (1<<3),
-  RD_CmdKindFlag_ListInTextRng       = (1<<4),
-  RD_CmdKindFlag_ListInMemoryEval    = (1<<5),
-  RD_CmdKindFlag_ListInMemory        = (1<<6),
 };
 
 ////////////////////////////////
@@ -842,6 +837,7 @@ internal RD_Regs *rd_push_regs_(RD_Regs *regs);
 internal RD_Regs *rd_pop_regs(void);
 #define RD_RegsScope(...) DeferLoop(rd_push_regs(__VA_ARGS__), rd_pop_regs())
 internal void rd_regs_fill_slot_from_string(RD_RegSlot slot, String8 query_expr, String8 string);
+internal RD_RegSlot rd_regs_fill_slot_from_ctx_eval(E_Eval eval);
 
 ////////////////////////////////
 //~ rjf: Commands