typo and formatting

base/compiler/ssair/show.jl

@@ -31,10 +31,9 @@ function Base.show(io::IO, cfg::CFG)
     end
 end
 
-# Forwarding for existing libraries 
-# TODO Not sure if this is necessary since I don't know if any library is using it.
+# Forwarding print_stmt for existing libraries with empty unstable_ssa.
 function print_stmt(io::IO, idx::Int, @nospecialize(stmt), used::BitSet, maxlength_idx::Int, color::Bool, show_type::Bool)
-	print_stmt(io, idx, stmt, used, BitSet(), maxlength_idx, color, show_type)
+    print_stmt(io, idx, stmt, used, BitSet(), maxlength_idx, color, show_type)
 end
 
 function print_stmt(io::IO, idx::Int, @nospecialize(stmt), used::BitSet, unstable_ssa::BitSet, maxlength_idx::Int, color::Bool, show_type::Bool)
@@ -87,7 +86,7 @@ function print_stmt(io::IO, idx::Int, @nospecialize(stmt), used::BitSet, unstabl
         show_unquoted_gotoifnot(io, stmt, indent, "#")
     # everything else in the IR, defer to the generic AST printer
     elseif stmt isa Expr
-    	show_unquoted(io, stmt, unstable_ssa, indent, show_type ? prec_decl : 0)
+        show_unquoted(io, stmt, unstable_ssa, indent, show_type ? prec_decl : 0)
     else
         show_unquoted(io, stmt, indent, show_type ? prec_decl : 0)
     end
@@ -128,7 +127,6 @@ function show_unquoted(io::IO, stmt::PiNode, indent::Int, ::Int)
     print(io, ", ")
     printstyled(io, stmt.typ, color=:cyan)
     print(io, ")")
-end
 
 function show_unquoted(io::IO, stmt::UpsilonNode, indent::Int, ::Int)
     print(io, "ϒ (")
@@ -635,6 +633,8 @@ end
 #   may return a new node at the current index `idx`, which is printed before the statement
 #   at index `idx`. This function is repeatedly called until it returns `nothing`.
 #   to iterate nodes that are to be inserted after the statement, set `attach_after=true`.
+
+# Forwarding function for compatibility with existing libraries like LoweredCodeUtils.jl
 function show_ir_stmt(io::IO, code::Union{IRCode, CodeInfo, IncrementalCompact}, idx::Int, config::IRShowConfig,
                       used::BitSet, cfg::CFG, bb_idx::Int; pop_new_node! = Returns(nothing), only_after::Bool=false)
     return show_ir_stmt(io, code, idx, config.line_info_preprinter, config.line_info_postprinter,
@@ -647,11 +647,10 @@ function show_ir_stmt(io::IO, code::Union{IRCode, CodeInfo, IncrementalCompact},
                         used, unstable_ssa, cfg, bb_idx; pop_new_node!, only_after, config.bb_color)
 end
 
-# Forwarding function for compability with existing libraries like LoweredCodeUtils.jl
 function show_ir_stmt(io::IO, code::Union{IRCode, CodeInfo, IncrementalCompact}, idx::Int, line_info_preprinter::Function, line_info_postprinter::Function,
                       used::BitSet, cfg::CFG, bb_idx::Int; pop_new_node! = Returns(nothing), only_after::Bool=false, bb_color=:light_black)
-	return show_ir_stmt(io, code, idx, line_info_preprinter, line_info_postprinter, 
-						used, BitSet(), cfg, bb_idx; pop_new_node!, only_after, bb_color)
+    return show_ir_stmt(io, code, idx, line_info_preprinter, line_info_postprinter,
+                      used, BitSet(), cfg, bb_idx; pop_new_node!, only_after, bb_color)
 end
 
 function show_ir_stmt(io::IO, code::Union{IRCode, CodeInfo, IncrementalCompact}, idx::Int, line_info_preprinter, line_info_postprinter,
@@ -868,9 +867,9 @@ statementidx_lineinfo_printer(f, code::CodeInfo) = f(code.debuginfo, :var"unknow
 statementidx_lineinfo_printer(code) = statementidx_lineinfo_printer(DILineInfoPrinter, code)
 
 function is_unstable_ssa(code::CodeInfo, idx::Int64)
-	ssaType = _type(code, idx)
-	is_unstable = isa(ssaType, Type) & (!Base.isdispatchelem(ssaType) || ssaType == Core.Box)
-	return is_unstable
+    ssaType = _type(code, idx)
+    is_unstable = isa(ssaType, Type) & (!Base.isdispatchelem(ssaType) || ssaType == Core.Box)
+    return is_unstable
 end
 
 function stmts_used(io::IO, code::IRCode, warn_unset_entry=true)

base/show.jl

@@ -1729,7 +1729,7 @@ end
 # show an indented list
 
 function show_list(io::IO, items, sep, indent::Int, prec::Int=0, quote_level::Int=0, enclose_operators::Bool=false, kw::Bool=false)
-	show_list(io, items, sep, BitSet(), indent, prec, quote_level, enclose_operators, kw)
+    show_list(io, items, sep, BitSet(), indent, prec, quote_level, enclose_operators, kw)
 end
 
 function show_list(io::IO, items, sep, unstable_ssa::BitSet, indent::Int, prec::Int=0, quote_level::Int=0, enclose_operators::Bool=false,
@@ -1763,7 +1763,7 @@ function show_list(io::IO, items, sep, unstable_ssa::BitSet, indent::Int, prec::
 end
 # show an indented list inside the parens (op, cl)
 function show_enclosed_list(io::IO, op, items, sep, cl, indent, prec=0, quote_level=0, encl_ops=false, kw::Bool=false)
-	show_enclosed_list(io, op, items, sep, cl, BitSet(), indent, prec, quote_level, encl_ops, kw)
+    show_enclosed_list(io, op, items, sep, cl, BitSet(), indent, prec, quote_level, encl_ops, kw)
 end
 
 function show_enclosed_list(io::IO, op, items, sep, cl, unstable_ssa::BitSet, indent, prec=0, quote_level=0, encl_ops=false, kw::Bool=false)
@@ -1783,7 +1783,7 @@ end
 # show a normal (non-operator) function call, e.g. f(x, y) or A[z]
 # kw: `=` expressions are parsed with head `kw` in this context
 function show_call(io::IO, head, func, func_args, indent, quote_level, kw::Bool)
-	show_call(io, head, func, func_args, BitSet(), indent, quote_level, kw)
+    show_call(io, head, func, func_args, BitSet(), indent, quote_level, kw)
 end
 
 function show_call(io::IO, head, func, func_args, unstable_ssa::BitSet, indent, quote_level, kw::Bool)
@@ -1994,7 +1994,7 @@ end
 
 # TODO: implement interpolated strings
 function show_unquoted(io::IO, ex::Expr, indent::Int, prev::Int, quote_level::Int=0)
-	show_unquoted(io, ex, BitSet(), indent, prev, quote_level)
+    show_unquoted(io, ex, BitSet(), indent, prev, quote_level)
 end
 
 function show_unquoted(io::IO, ex::Expr, unstable_ssa::BitSet, indent::Int, prec::Int, quote_level::Int)