Copilot commented on code in PR #7167:
URL: https://github.com/apache/hbase/pull/7167#discussion_r2225849488


##########
hbase-shell/src/main/ruby/irb/hirb.rb:
##########
@@ -23,6 +23,70 @@ module IRB
 
   # Subclass of IRB so can intercept methods
   class HIRB < Irb
+      # Method for checking the variable name conflict with the hbase command 
name
+        def check_variable_assignment_conflict(line)
+          # checks when a single variable is defined at a time (eg a = 10) or 
multiple variable assignment (e.g., a,b,c = 1,2,3)
+          single_match = 
line.strip.match(/^([a-zA-Z_][a-zA-Z0-9_]*)\s*=\s*(.+)/)
+          multiple_match = 
line.strip.match(/^([a-zA-Z_][a-zA-Z0-9_]*(?:\s*,\s*[a-zA-Z_][a-zA-Z0-9_]*)+)\s*=\s*(.+)/)
+
+          # Match comma-based expressions that may result in nil assignment to 
a variable
+          comma_expression = 
line.strip.match(/^([a-zA-Z_][a-zA-Z0-9_]*)\s*,\s*(.+)/)
+
+          variable_names = []
+
+          if multiple_match
+            # Extract all variable names during multiple assignment
+            left_side = multiple_match[1]
+            variable_names = left_side.split(',').map(&:strip)
+          elsif single_match
+            # Extracting variable name for single assignment
+            variable_names = [single_match[1]]
+          elsif comma_expression
+            # Handle comma expressions that create variables (like 
list_namespace,'ns.*')
+            variable_names = [comma_expression[1]]
+          else
+            # if no assignment pattern found
+            return false
+          end
+
+          # return false if variable_names is empty
+          return false if variable_names.empty?
+
+          receiver = @context.workspace.binding.receiver
+          conflicting_variables = []
+
+          # Checking variable names for conflicts with the HBase shell command 
names
+          variable_names.each do |variable_name|
+            conflicts = []
+
+            # if variable is defined as the command name adding it to 
conflicts list
+            if defined?(::Shell) && ::Shell.respond_to?(:commands) && 
::Shell.commands.key?(variable_name)
+              conflicts << "HBase command"
+            end
+
+            # If this variable has conflicts, add it to the list
+            unless conflicts.empty?
+              conflicting_variables << {
+                name: variable_name,
+                conflicts: conflicts
+              }
+            end
+          end
+
+          # If any conflicts found, block the entire assignment
+          unless conflicting_variables.empty?
+            puts "ERROR: Cannot create variable assignment"
+            conflicting_variables.each do |var_info|
+              puts "'#{var_info[:name]}' conflicts with: 
#{var_info[:conflicts].join(', ')}"
+            end
+            puts "This could cause unexpected behavior or make commands 
unusable"
+            puts "Please use different variable names"
+            puts
+            return true  # Block assignment
+          end
+          return false  # Allow assignment
+        end

Review Comment:
   The method has inconsistent indentation. It should use 6 spaces to match the 
class indentation level, not 8 spaces.
   ```suggestion
       # Method for checking the variable name conflict with the hbase command 
name
         def check_variable_assignment_conflict(line)
           # checks when a single variable is defined at a time (eg a = 10) or 
multiple variable assignment (e.g., a,b,c = 1,2,3)
           single_match = 
line.strip.match(/^([a-zA-Z_][a-zA-Z0-9_]*)\s*=\s*(.+)/)
           multiple_match = 
line.strip.match(/^([a-zA-Z_][a-zA-Z0-9_]*(?:\s*,\s*[a-zA-Z_][a-zA-Z0-9_]*)+)\s*=\s*(.+)/)
   
           # Match comma-based expressions that may result in nil assignment to 
a variable
           comma_expression = 
line.strip.match(/^([a-zA-Z_][a-zA-Z0-9_]*)\s*,\s*(.+)/)
   
           variable_names = []
   
           if multiple_match
             # Extract all variable names during multiple assignment
             left_side = multiple_match[1]
             variable_names = left_side.split(',').map(&:strip)
           elsif single_match
             # Extracting variable name for single assignment
             variable_names = [single_match[1]]
           elsif comma_expression
             # Handle comma expressions that create variables (like 
list_namespace,'ns.*')
             variable_names = [comma_expression[1]]
           else
             # if no assignment pattern found
             return false
           end
   
           # return false if variable_names is empty
           return false if variable_names.empty?
   
           receiver = @context.workspace.binding.receiver
           conflicting_variables = []
   
           # Checking variable names for conflicts with the HBase shell command 
names
           variable_names.each do |variable_name|
             conflicts = []
   
             # if variable is defined as the command name adding it to 
conflicts list
             if defined?(::Shell) && ::Shell.respond_to?(:commands) && 
::Shell.commands.key?(variable_name)
               conflicts << "HBase command"
             end
   
             # If this variable has conflicts, add it to the list
             unless conflicts.empty?
               conflicting_variables << {
                 name: variable_name,
                 conflicts: conflicts
               }
             end
           end
   
           # If any conflicts found, block the entire assignment
           unless conflicting_variables.empty?
             puts "ERROR: Cannot create variable assignment"
             conflicting_variables.each do |var_info|
               puts "'#{var_info[:name]}' conflicts with: 
#{var_info[:conflicts].join(', ')}"
             end
             puts "This could cause unexpected behavior or make commands 
unusable"
             puts "Please use different variable names"
             puts
             return true  # Block assignment
           end
           return false  # Allow assignment
         end
   ```



##########
hbase-shell/src/main/ruby/irb/hirb.rb:
##########
@@ -23,6 +23,70 @@ module IRB
 
   # Subclass of IRB so can intercept methods
   class HIRB < Irb
+      # Method for checking the variable name conflict with the hbase command 
name
+        def check_variable_assignment_conflict(line)
+          # checks when a single variable is defined at a time (eg a = 10) or 
multiple variable assignment (e.g., a,b,c = 1,2,3)
+          single_match = 
line.strip.match(/^([a-zA-Z_][a-zA-Z0-9_]*)\s*=\s*(.+)/)
+          multiple_match = 
line.strip.match(/^([a-zA-Z_][a-zA-Z0-9_]*(?:\s*,\s*[a-zA-Z_][a-zA-Z0-9_]*)+)\s*=\s*(.+)/)
+
+          # Match comma-based expressions that may result in nil assignment to 
a variable
+          comma_expression = 
line.strip.match(/^([a-zA-Z_][a-zA-Z0-9_]*)\s*,\s*(.+)/)
+
+          variable_names = []
+
+          if multiple_match
+            # Extract all variable names during multiple assignment
+            left_side = multiple_match[1]
+            variable_names = left_side.split(',').map(&:strip)
+          elsif single_match
+            # Extracting variable name for single assignment
+            variable_names = [single_match[1]]
+          elsif comma_expression
+            # Handle comma expressions that create variables (like 
list_namespace,'ns.*')
+            variable_names = [comma_expression[1]]
+          else
+            # if no assignment pattern found
+            return false
+          end
+
+          # return false if variable_names is empty
+          return false if variable_names.empty?
+
+          receiver = @context.workspace.binding.receiver
+          conflicting_variables = []
+
+          # Checking variable names for conflicts with the HBase shell command 
names
+          variable_names.each do |variable_name|
+            conflicts = []
+
+            # if variable is defined as the command name adding it to 
conflicts list
+            if defined?(::Shell) && ::Shell.respond_to?(:commands) && 
::Shell.commands.key?(variable_name)
+              conflicts << "HBase command"
+            end
+
+            # If this variable has conflicts, add it to the list
+            unless conflicts.empty?
+              conflicting_variables << {
+                name: variable_name,
+                conflicts: conflicts

Review Comment:
   The variable 'conflicts' is initialized inside the loop but only used to 
check if ::Shell.commands.key?(variable_name). This can be simplified by 
directly checking the condition without the intermediate array.
   ```suggestion
               # Check if the variable name conflicts with HBase shell command 
names
               if defined?(::Shell) && ::Shell.respond_to?(:commands) && 
::Shell.commands.key?(variable_name)
                 conflicting_variables << {
                   name: variable_name,
                   conflicts: ["HBase command"]
   ```



##########
hbase-shell/src/main/ruby/irb/hirb.rb:
##########
@@ -112,6 +176,7 @@ def eval_input
         signal_status(:IN_EVAL) do
           begin
             line.untaint
+            next if check_variable_assignment_conflict(line)

Review Comment:
   The indentation is inconsistent with the surrounding code. This line should 
have 14 spaces to align with the other statements in the begin block.
   ```suggestion
                 next if check_variable_assignment_conflict(line)
   ```



##########
hbase-shell/src/main/ruby/irb/hirb.rb:
##########
@@ -112,6 +176,7 @@ def eval_input
         signal_status(:IN_EVAL) do
           begin
             line.untaint

Review Comment:
   The 'untaint' method has been deprecated and removed in Ruby 3.2+. This 
could cause compatibility issues with newer Ruby versions.
   ```suggestion
   
   ```



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