diff --git a/src/command_line.jl b/src/command_line.jl
index d84a560..dd55449 100644
--- a/src/command_line.jl
+++ b/src/command_line.jl
@@ -58,7 +58,6 @@ function _redraw_cmd_line!(pagerd::Pager)
 
     elseif mode == :searching
         active_search_match_id = pagerd.active_search_match_id
-        search_matches         = pagerd.search_matches
         num_matches            = pagerd.num_matches
 
         # Check if there are matches.
diff --git a/src/pager.jl b/src/pager.jl
index a7f7b85..cbc0cfe 100644
--- a/src/pager.jl
+++ b/src/pager.jl
@@ -181,7 +181,6 @@ function _pager_key_process!(pagerd::Pager, k::Keystroke)
     visual_mode      = pagerd.visual_mode
     visual_mode_line = pagerd.visual_mode_line
 
-    redraw = false
     event = nothing
     key = (k.value, k.alt, k.ctrl, k.shift)
     action = get(_KEYBINDINGS, key, nothing)
@@ -486,7 +485,6 @@ end
 # Process the event in `pagerd`. If this function return `false`, the application must exit.
 function _pager_event_process!(pagerd::Pager)
     event = pagerd.event
-    lines = pagerd.lines
 
     # For EOT (^D), we will implement two types of "quit" action. If we are in searching
     # mode, exit it. If not, quit the pager.
@@ -536,7 +534,7 @@ function _pager_event_process!(pagerd::Pager)
         )
         frozen_rows = tryparse(Int, cmd_input; base = 10)
 
-        if (frozen_rows == nothing) && !isempty(cmd_input)
+        if isnothing(frozen_rows) && !isempty(cmd_input)
             _print_cmd_message!(
                 pagerd,
                 "Invalid data!";
@@ -544,7 +542,7 @@ function _pager_event_process!(pagerd::Pager)
             )
             _jlgetch(pagerd.term.in_stream)
         else
-            if frozen_rows != nothing
+            if !isnothing(frozen_rows)
                 pagerd.frozen_rows = max(0, frozen_rows)
                 pagerd.start_row = max(pagerd.start_row, frozen_rows + 1)
                 pagerd.visual_mode_line = 1
@@ -556,14 +554,14 @@ function _pager_event_process!(pagerd::Pager)
             )
             frozen_columns = tryparse(Int, cmd_input; base = 10)
 
-            if (frozen_columns == nothing) && !isempty(cmd_input)
+            if isnothing(frozen_columns) && !isempty(cmd_input)
                 _print_cmd_message!(
                     pagerd, "Invalid data!";
                     crayon = crayon"red bold"
                 )
                 _jlgetch(pagerd.term.in_stream)
 
-            elseif frozen_columns != nothing
+            elseif !isnothing(frozen_columns)
                 pagerd.frozen_columns = max(0, frozen_columns)
                 pagerd.start_column = max(pagerd.start_column, frozen_columns + 1)
             end
@@ -578,15 +576,15 @@ function _pager_event_process!(pagerd::Pager)
         )
         title_rows = tryparse(Int, cmd_input; base = 10)
 
-        if (title_rows == nothing) && !isempty(cmd_input)
+        if isnothing(title_rows) && !isempty(cmd_input)
             _print_cmd_message!(
                 pagerd,
                 "Invalid data!";
                 crayon = crayon"red bold"
             )
             _jlgetch(pagerd.term.in_stream)
-        else
-            title_rows != nothing && (pagerd.title_rows = max(0, title_rows))
+        elseif !isnothing(title_rows)
+            pagerd.title_rows = max(0, title_rows)
         end
 
         _request_redraw!(pagerd)
diff --git a/src/repl.jl b/src/repl.jl
index dd18803..e85eb8f 100644
--- a/src/repl.jl
+++ b/src/repl.jl
@@ -225,12 +225,12 @@ function _tp_mode_do_cmd(repl::REPL.AbstractREPL, input::String)
         is_error = false
 
         # Loop through the lines.
-        @inbounds for i in 1:length(lines)
+        @inbounds for i in eachindex(lines)
             cmd *= lines[i] * "\n"
             ast = Base.parse_input_line(cmd)
 
             # If the command is incomplete, we need to wait for another line.
-            ast !== nothing && ast.head == :incomplete && continue
+            !isnothing(ast) && ast.head == :incomplete && continue
 
             # We will use `REPL.eval_with_backend` to evaluate the expression. This function
             # returns two values: the object returned by the expression, and a boolean value
diff --git a/src/search.jl b/src/search.jl
index 0214600..81e3114 100644
--- a/src/search.jl
+++ b/src/search.jl
@@ -7,13 +7,10 @@
 # Change the active matches in `pagerd`. If `forward` is `true`, the search is performed
 # forward. Otherwise, it is performed backwards.
 function _change_active_match!(pagerd::Pager, forward::Bool = true)
-    search_matches         = pagerd.search_matches
     active_search_match_id = pagerd.active_search_match_id
     num_matches            = pagerd.num_matches
 
-    if num_matches == 0
-        active_number_match = 0
-    else
+    if num_matches != 0
         # Activate the next match according to the user preference.
         if forward
             active_search_match_id += 1
diff --git a/src/view.jl b/src/view.jl
index 39360c0..4ab4ed2 100644
--- a/src/view.jl
+++ b/src/view.jl
@@ -15,7 +15,6 @@ function _view!(pagerd::Pager)
     frozen_columns         = pagerd.frozen_columns
     frozen_rows            = pagerd.frozen_rows
     lines                  = pagerd.lines
-    num_lines              = pagerd.num_lines
     search_matches         = pagerd.search_matches
     show_ruler             = pagerd.show_ruler
     start_column           = pagerd.start_column