fix(codemod): restore accidentally deleted generic key:value handler

The generic line-start regex (key: value -> key value) was accidentally
deleted during an earlier edit, leaving the output line orphaned inside
the generic heredoc handler. This caused ALL metadata fields to retain
their colons, breaking many maps.

Author: ronaldtse

exe/codemod-imp-to-isc

@@ -197,7 +197,7 @@ module Interscript
       def convert_metadata_block
         # Find the opening brace and consume until matching close, transforming
         # `key: value` -> `key value` and `description: |` / `notes:` heredocs.
-        return unless @scanner.scan(/\s*\{/)
+        return unless @scanner.scan(/[ \t]*\{/)
 
         @out << " {"
         depth = 1
@@ -332,9 +332,9 @@ module Interscript
             @out << "\n#{indent}#{field} { "
             convert_indented_block_until_dedent(indent)
             @out << " }"
+          elsif @scanner.scan(/(?:\A|\n)([ \t]+)([A-Za-z_][\w]*)[ \t]*:[ \t]*/)
             # key: value -> key value, only when the key is at the start of a
-            # (indented) line. Use [ \t] instead of \s to avoid eating newlines
-            # (which would merge `key:\n  next:` into `key next:`).
+            # (indented) line. Use [ \t] instead of \s to avoid eating newlines.
             @out << "\n#{@scanner[1]}#{@scanner[2]} "
           elsif @scanner.scan(/"/)
             @out << '"'
@@ -389,9 +389,8 @@ module Interscript
             # Hit the enclosing metadata `}` (possibly after blank lines).
             return
           elsif @scanner.scan(/\n[ \t]*\n/)
-            # Blank line(s) between items — preserve one newline. Do NOT
-            # consume the indent of the next item; the next-item regexes
-            # require the indent prefix.
+            # Blank line(s) — preserve one newline. Do NOT consume the
+            # indent of the next item.
             @out << "\n"
           elsif @scanner.scan(/\n([ \t]+)-[ \t]*\|[ \t]*\n/)
             # `|` heredoc form
@@ -487,7 +486,7 @@ module Interscript
       end
 
       def convert_tests_block
-        return unless @scanner.scan(/\s*\{/)
+        return unless @scanner.scan(/[ \t]*\{/)
         @out << " {"
         depth = 1
         until @scanner.eos? || depth == 0
@@ -519,7 +518,7 @@ module Interscript
       end
 
       def convert_aliases_block
-        return unless @scanner.scan(/\s*\{/)
+        return unless @scanner.scan(/[ \t]*\{/)
         @out << " {"
         depth = 1
         until @scanner.eos? || depth == 0
@@ -588,7 +587,7 @@ module Interscript
         # `stage(translit) {` becomes `stage translit {`.
         if @scanner.scan(/\s*\(([A-Za-z_]\w*)\)\s*\{/)
           @out << " #{@scanner[1]} {"
-        elsif @scanner.scan(/\s*\{/)
+        elsif @scanner.scan(/[ \t]*\{/)
           @out << " main {"
         elsif @scanner.scan(/\s+([A-Za-z_]\w*)\s*\{/)
           @out << " #{@scanner[1]} {"

lib/interscript/isc/grammar/concerns/items.rb

@@ -56,7 +56,7 @@ module Items
 
           rule(:any_constructor) do
             str("any") >> str("(") >> whitespace? >>
-              (range_arg | set_arg | alias_arg).as(:any) >>
+              (range_arg | set_arg | alias_arg | item.as(:any_item)).as(:any) >>
               whitespace? >> str(")")
           end