diff --git a/config/p10k-classic.zsh b/config/p10k-classic.zsh
index 36de5ecf..11ac1a72 100644
--- a/config/p10k-classic.zsh
+++ b/config/p10k-classic.zsh
@@ -553,10 +553,13 @@
   # Default asdf color. Only used to display tools for which there is no color override (see below).
   typeset -g POWERLEVEL9K_ASDF_FOREGROUND=66
 
-  # There are three parameters that can be used to hide tools. If at least one of them decides
-  # to hide a tool, that tool gets hidden. POWERLEVEL9K_ASDF_SHOW_SYSTEM=false hides "system". To
-  # see the difference between POWERLEVEL9K_ASDF_SOURCES and POWERLEVEL9K_ASDF_PROMPT_ALWAYS_SHOW
-  # consider the effect of the following commands:
+  # There are four parameters that can be used to hide asdf tools. Each parameter describes
+  # conditions under which a tool gets hidden. Parameters can hide tools but not unhide them. If at
+  # least one parameter decides to hide a tool, that tool gets hidden. If no parameter decides to
+  # hide a tool, it gets shown.
+  #
+  # Special note on the difference between POWERLEVEL9K_ASDF_SOURCES and
+  # POWERLEVEL9K_ASDF_PROMPT_ALWAYS_SHOW. Consider the effect of the following commands:
   #
   #   asdf local  python 3.8.1
   #   asdf global python 3.8.1
@@ -592,57 +595,83 @@
   # Tip: Override this parameter for ${TOOL} with POWERLEVEL9K_ASDF_${TOOL}_SHOW_SYSTEM.
   typeset -g POWERLEVEL9K_ASDF_SHOW_SYSTEM=true
 
+  # If set to non-empty value, hide tools unless there is a file matching the specified file pattern
+  # in the current directory, or its parent diretory, or its grandparent directory, and so on.
+  #
+  # Note: If this parameter is set to empty value, it won't hide tools.
+  # Note: SHOW_ON_UPGLOB isn't specific to asdf. It works with all prompt segments.
+  # Tip: Override this parameter for ${TOOL} with POWERLEVEL9K_ASDF_${TOOL}_SHOW_ON_UPGLOB.
+  #
+  # Example: Hide nodejs version when there is no package.json and no *.js files in the current
+  # directory, in `..`, in `../..` and so on.
+  #
+  #   typeset -g POWERLEVEL9K_ASDF_NODEJS_SHOW_ON_UPGLOB='*.js|package.json'
+  typeset -g POWERLEVEL9K_ASDF_SHOW_ON_UPGLOB=
+
   # Ruby version from asdf.
   typeset -g POWERLEVEL9K_ASDF_RUBY_FOREGROUND=168
   # typeset -g POWERLEVEL9K_ASDF_RUBY_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_RUBY_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Python version from asdf.
   typeset -g POWERLEVEL9K_ASDF_PYTHON_FOREGROUND=37
   # typeset -g POWERLEVEL9K_ASDF_PYTHON_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_PYTHON_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Go version from asdf.
   typeset -g POWERLEVEL9K_ASDF_GO_FOREGROUND=37
   # typeset -g POWERLEVEL9K_ASDF_GO_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_GO_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Node.js version from asdf.
   typeset -g POWERLEVEL9K_ASDF_NODEJS_FOREGROUND=70
   # typeset -g POWERLEVEL9K_ASDF_NODEJS_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_NODEJS_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Rust version from asdf.
   typeset -g POWERLEVEL9K_ASDF_RUST_FOREGROUND=37
   # typeset -g POWERLEVEL9K_ASDF_RUST_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_RUST_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # .NET Core version from asdf.
   typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_FOREGROUND=134
   # typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Flutter version from asdf.
   typeset -g POWERLEVEL9K_ASDF_FLUTTER_FOREGROUND=38
   # typeset -g POWERLEVEL9K_ASDF_FLUTTER_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_FLUTTER_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Lua version from asdf.
   typeset -g POWERLEVEL9K_ASDF_LUA_FOREGROUND=32
   # typeset -g POWERLEVEL9K_ASDF_LUA_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_LUA_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Java version from asdf.
   typeset -g POWERLEVEL9K_ASDF_JAVA_FOREGROUND=32
   # typeset -g POWERLEVEL9K_ASDF_JAVA_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_JAVA_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Perl version from asdf.
   typeset -g POWERLEVEL9K_ASDF_PERL_FOREGROUND=67
   # typeset -g POWERLEVEL9K_ASDF_PERL_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_PERL_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Erlang version from asdf.
   typeset -g POWERLEVEL9K_ASDF_ERLANG_FOREGROUND=125
   # typeset -g POWERLEVEL9K_ASDF_ERLANG_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_ERLANG_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Elixir version from asdf.
   typeset -g POWERLEVEL9K_ASDF_ELIXIR_FOREGROUND=129
   # typeset -g POWERLEVEL9K_ASDF_ELIXIR_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_ELIXIR_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Postgres version from asdf.
   typeset -g POWERLEVEL9K_ASDF_POSTGRES_FOREGROUND=31
   # typeset -g POWERLEVEL9K_ASDF_POSTGRES_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_POSTGRES_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   ##########[ nordvpn: nordvpn connection status, linux only (https://nordvpn.com/) ]###########
   # NordVPN connection indicator color.
diff --git a/config/p10k-lean-8colors.zsh b/config/p10k-lean-8colors.zsh
index e22bf712..a4e4e158 100644
--- a/config/p10k-lean-8colors.zsh
+++ b/config/p10k-lean-8colors.zsh
@@ -554,10 +554,13 @@
   # Default asdf color. Only used to display tools for which there is no color override (see below).
   typeset -g POWERLEVEL9K_ASDF_FOREGROUND=6
 
-  # There are three parameters that can be used to hide tools. If at least one of them decides
-  # to hide a tool, that tool gets hidden. POWERLEVEL9K_ASDF_SHOW_SYSTEM=false hides "system". To
-  # see the difference between POWERLEVEL9K_ASDF_SOURCES and POWERLEVEL9K_ASDF_PROMPT_ALWAYS_SHOW
-  # consider the effect of the following commands:
+  # There are four parameters that can be used to hide asdf tools. Each parameter describes
+  # conditions under which a tool gets hidden. Parameters can hide tools but not unhide them. If at
+  # least one parameter decides to hide a tool, that tool gets hidden. If no parameter decides to
+  # hide a tool, it gets shown.
+  #
+  # Special note on the difference between POWERLEVEL9K_ASDF_SOURCES and
+  # POWERLEVEL9K_ASDF_PROMPT_ALWAYS_SHOW. Consider the effect of the following commands:
   #
   #   asdf local  python 3.8.1
   #   asdf global python 3.8.1
@@ -593,57 +596,83 @@
   # Tip: Override this parameter for ${TOOL} with POWERLEVEL9K_ASDF_${TOOL}_SHOW_SYSTEM.
   typeset -g POWERLEVEL9K_ASDF_SHOW_SYSTEM=true
 
+  # If set to non-empty value, hide tools unless there is a file matching the specified file pattern
+  # in the current directory, or its parent diretory, or its grandparent directory, and so on.
+  #
+  # Note: If this parameter is set to empty value, it won't hide tools.
+  # Note: SHOW_ON_UPGLOB isn't specific to asdf. It works with all prompt segments.
+  # Tip: Override this parameter for ${TOOL} with POWERLEVEL9K_ASDF_${TOOL}_SHOW_ON_UPGLOB.
+  #
+  # Example: Hide nodejs version when there is no package.json and no *.js files in the current
+  # directory, in `..`, in `../..` and so on.
+  #
+  #   typeset -g POWERLEVEL9K_ASDF_NODEJS_SHOW_ON_UPGLOB='*.js|package.json'
+  typeset -g POWERLEVEL9K_ASDF_SHOW_ON_UPGLOB=
+
   # Ruby version from asdf.
   typeset -g POWERLEVEL9K_ASDF_RUBY_FOREGROUND=1
   # typeset -g POWERLEVEL9K_ASDF_RUBY_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_RUBY_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Python version from asdf.
   typeset -g POWERLEVEL9K_ASDF_PYTHON_FOREGROUND=6
   # typeset -g POWERLEVEL9K_ASDF_PYTHON_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_PYTHON_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Go version from asdf.
   typeset -g POWERLEVEL9K_ASDF_GO_FOREGROUND=6
   # typeset -g POWERLEVEL9K_ASDF_GO_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_GO_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Node.js version from asdf.
   typeset -g POWERLEVEL9K_ASDF_NODEJS_FOREGROUND=2
   # typeset -g POWERLEVEL9K_ASDF_NODEJS_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_NODEJS_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Rust version from asdf.
   typeset -g POWERLEVEL9K_ASDF_RUST_FOREGROUND=4
   # typeset -g POWERLEVEL9K_ASDF_RUST_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_RUST_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # .NET Core version from asdf.
   typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_FOREGROUND=5
   # typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Flutter version from asdf.
   typeset -g POWERLEVEL9K_ASDF_FLUTTER_FOREGROUND=4
   # typeset -g POWERLEVEL9K_ASDF_FLUTTER_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_FLUTTER_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Lua version from asdf.
   typeset -g POWERLEVEL9K_ASDF_LUA_FOREGROUND=4
   # typeset -g POWERLEVEL9K_ASDF_LUA_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_LUA_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Java version from asdf.
   typeset -g POWERLEVEL9K_ASDF_JAVA_FOREGROUND=4
   # typeset -g POWERLEVEL9K_ASDF_JAVA_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_JAVA_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Perl version from asdf.
   typeset -g POWERLEVEL9K_ASDF_PERL_FOREGROUND=6
   # typeset -g POWERLEVEL9K_ASDF_PERL_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_PERL_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Erlang version from asdf.
   typeset -g POWERLEVEL9K_ASDF_ERLANG_FOREGROUND=1
   # typeset -g POWERLEVEL9K_ASDF_ERLANG_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_ERLANG_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Elixir version from asdf.
   typeset -g POWERLEVEL9K_ASDF_ELIXIR_FOREGROUND=5
   # typeset -g POWERLEVEL9K_ASDF_ELIXIR_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_ELIXIR_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Postgres version from asdf.
   typeset -g POWERLEVEL9K_ASDF_POSTGRES_FOREGROUND=6
   # typeset -g POWERLEVEL9K_ASDF_POSTGRES_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_POSTGRES_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   ##########[ nordvpn: nordvpn connection status, linux only (https://nordvpn.com/) ]###########
   # NordVPN connection indicator color.
diff --git a/config/p10k-lean.zsh b/config/p10k-lean.zsh
index 515f8604..7cbf0bef 100644
--- a/config/p10k-lean.zsh
+++ b/config/p10k-lean.zsh
@@ -554,10 +554,13 @@
   # Default asdf color. Only used to display tools for which there is no color override (see below).
   typeset -g POWERLEVEL9K_ASDF_FOREGROUND=66
 
-  # There are three parameters that can be used to hide tools. If at least one of them decides
-  # to hide a tool, that tool gets hidden. POWERLEVEL9K_ASDF_SHOW_SYSTEM=false hides "system". To
-  # see the difference between POWERLEVEL9K_ASDF_SOURCES and POWERLEVEL9K_ASDF_PROMPT_ALWAYS_SHOW
-  # consider the effect of the following commands:
+  # There are four parameters that can be used to hide asdf tools. Each parameter describes
+  # conditions under which a tool gets hidden. Parameters can hide tools but not unhide them. If at
+  # least one parameter decides to hide a tool, that tool gets hidden. If no parameter decides to
+  # hide a tool, it gets shown.
+  #
+  # Special note on the difference between POWERLEVEL9K_ASDF_SOURCES and
+  # POWERLEVEL9K_ASDF_PROMPT_ALWAYS_SHOW. Consider the effect of the following commands:
   #
   #   asdf local  python 3.8.1
   #   asdf global python 3.8.1
@@ -593,57 +596,83 @@
   # Tip: Override this parameter for ${TOOL} with POWERLEVEL9K_ASDF_${TOOL}_SHOW_SYSTEM.
   typeset -g POWERLEVEL9K_ASDF_SHOW_SYSTEM=true
 
+  # If set to non-empty value, hide tools unless there is a file matching the specified file pattern
+  # in the current directory, or its parent diretory, or its grandparent directory, and so on.
+  #
+  # Note: If this parameter is set to empty value, it won't hide tools.
+  # Note: SHOW_ON_UPGLOB isn't specific to asdf. It works with all prompt segments.
+  # Tip: Override this parameter for ${TOOL} with POWERLEVEL9K_ASDF_${TOOL}_SHOW_ON_UPGLOB.
+  #
+  # Example: Hide nodejs version when there is no package.json and no *.js files in the current
+  # directory, in `..`, in `../..` and so on.
+  #
+  #   typeset -g POWERLEVEL9K_ASDF_NODEJS_SHOW_ON_UPGLOB='*.js|package.json'
+  typeset -g POWERLEVEL9K_ASDF_SHOW_ON_UPGLOB=
+
   # Ruby version from asdf.
   typeset -g POWERLEVEL9K_ASDF_RUBY_FOREGROUND=168
   # typeset -g POWERLEVEL9K_ASDF_RUBY_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_RUBY_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Python version from asdf.
   typeset -g POWERLEVEL9K_ASDF_PYTHON_FOREGROUND=37
   # typeset -g POWERLEVEL9K_ASDF_PYTHON_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_PYTHON_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Go version from asdf.
   typeset -g POWERLEVEL9K_ASDF_GO_FOREGROUND=37
   # typeset -g POWERLEVEL9K_ASDF_GO_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_GO_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Node.js version from asdf.
   typeset -g POWERLEVEL9K_ASDF_NODEJS_FOREGROUND=70
   # typeset -g POWERLEVEL9K_ASDF_NODEJS_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_NODEJS_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Rust version from asdf.
   typeset -g POWERLEVEL9K_ASDF_RUST_FOREGROUND=37
   # typeset -g POWERLEVEL9K_ASDF_RUST_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_RUST_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # .NET Core version from asdf.
   typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_FOREGROUND=134
   # typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_DOTNET_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Flutter version from asdf.
   typeset -g POWERLEVEL9K_ASDF_FLUTTER_FOREGROUND=38
   # typeset -g POWERLEVEL9K_ASDF_FLUTTER_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_FLUTTER_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Lua version from asdf.
   typeset -g POWERLEVEL9K_ASDF_LUA_FOREGROUND=32
   # typeset -g POWERLEVEL9K_ASDF_LUA_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_LUA_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Java version from asdf.
   typeset -g POWERLEVEL9K_ASDF_JAVA_FOREGROUND=32
   # typeset -g POWERLEVEL9K_ASDF_JAVA_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_JAVA_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Perl version from asdf.
   typeset -g POWERLEVEL9K_ASDF_PERL_FOREGROUND=67
   # typeset -g POWERLEVEL9K_ASDF_PERL_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_PERL_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Erlang version from asdf.
   typeset -g POWERLEVEL9K_ASDF_ERLANG_FOREGROUND=125
   # typeset -g POWERLEVEL9K_ASDF_ERLANG_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_ERLANG_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Elixir version from asdf.
   typeset -g POWERLEVEL9K_ASDF_ELIXIR_FOREGROUND=129
   # typeset -g POWERLEVEL9K_ASDF_ELIXIR_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_ELIXIR_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Postgres version from asdf.
   typeset -g POWERLEVEL9K_ASDF_POSTGRES_FOREGROUND=31
   # typeset -g POWERLEVEL9K_ASDF_POSTGRES_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_POSTGRES_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   ##########[ nordvpn: nordvpn connection status, linux only (https://nordvpn.com/) ]###########
   # NordVPN connection indicator color.
diff --git a/config/p10k-rainbow.zsh b/config/p10k-rainbow.zsh
index 1088de91..acd21d21 100644
--- a/config/p10k-rainbow.zsh
+++ b/config/p10k-rainbow.zsh
@@ -556,10 +556,13 @@
   typeset -g POWERLEVEL9K_ASDF_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_BACKGROUND=7
 
-  # There are three parameters that can be used to hide tools. If at least one of them decides
-  # to hide a tool, that tool gets hidden. POWERLEVEL9K_ASDF_SHOW_SYSTEM=false hides "system". To
-  # see the difference between POWERLEVEL9K_ASDF_SOURCES and POWERLEVEL9K_ASDF_PROMPT_ALWAYS_SHOW
-  # consider the effect of the following commands:
+  # There are four parameters that can be used to hide asdf tools. Each parameter describes
+  # conditions under which a tool gets hidden. Parameters can hide tools but not unhide them. If at
+  # least one parameter decides to hide a tool, that tool gets hidden. If no parameter decides to
+  # hide a tool, it gets shown.
+  #
+  # Special note on the difference between POWERLEVEL9K_ASDF_SOURCES and
+  # POWERLEVEL9K_ASDF_PROMPT_ALWAYS_SHOW. Consider the effect of the following commands:
   #
   #   asdf local  python 3.8.1
   #   asdf global python 3.8.1
@@ -595,70 +598,96 @@
   # Tip: Override this parameter for ${TOOL} with POWERLEVEL9K_ASDF_${TOOL}_SHOW_SYSTEM.
   typeset -g POWERLEVEL9K_ASDF_SHOW_SYSTEM=true
 
+  # If set to non-empty value, hide tools unless there is a file matching the specified file pattern
+  # in the current directory, or its parent diretory, or its grandparent directory, and so on.
+  #
+  # Note: If this parameter is set to empty value, it won't hide tools.
+  # Note: SHOW_ON_UPGLOB isn't specific to asdf. It works with all prompt segments.
+  # Tip: Override this parameter for ${TOOL} with POWERLEVEL9K_ASDF_${TOOL}_SHOW_ON_UPGLOB.
+  #
+  # Example: Hide nodejs version when there is no package.json and no *.js files in the current
+  # directory, in `..`, in `../..` and so on.
+  #
+  #   typeset -g POWERLEVEL9K_ASDF_NODEJS_SHOW_ON_UPGLOB='*.js|package.json'
+  typeset -g POWERLEVEL9K_ASDF_SHOW_ON_UPGLOB=
+
   # Ruby version from asdf.
   typeset -g POWERLEVEL9K_ASDF_RUBY_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_RUBY_BACKGROUND=1
   # typeset -g POWERLEVEL9K_ASDF_RUBY_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_RUBY_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Python version from asdf.
   typeset -g POWERLEVEL9K_ASDF_PYTHON_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_PYTHON_BACKGROUND=4
   # typeset -g POWERLEVEL9K_ASDF_PYTHON_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_PYTHON_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Go version from asdf.
   typeset -g POWERLEVEL9K_ASDF_GO_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_GO_BACKGROUND=4
   # typeset -g POWERLEVEL9K_ASDF_GO_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_GO_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Node.js version from asdf.
   typeset -g POWERLEVEL9K_ASDF_NODEJS_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_NODEJS_BACKGROUND=2
   # typeset -g POWERLEVEL9K_ASDF_NODEJS_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_NODEJS_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Rust version from asdf.
   typeset -g POWERLEVEL9K_ASDF_RUST_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_RUST_BACKGROUND=208
   # typeset -g POWERLEVEL9K_ASDF_RUST_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_RUST_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # .NET Core version from asdf.
   typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_BACKGROUND=5
   # typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_DOTNET_CORE_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Flutter version from asdf.
   typeset -g POWERLEVEL9K_ASDF_FLUTTER_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_FLUTTER_BACKGROUND=4
   # typeset -g POWERLEVEL9K_ASDF_FLUTTER_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_FLUTTER_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Lua version from asdf.
   typeset -g POWERLEVEL9K_ASDF_LUA_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_LUA_BACKGROUND=4
   # typeset -g POWERLEVEL9K_ASDF_LUA_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_LUA_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Java version from asdf.
   typeset -g POWERLEVEL9K_ASDF_JAVA_FOREGROUND=1
   typeset -g POWERLEVEL9K_ASDF_JAVA_BACKGROUND=7
   # typeset -g POWERLEVEL9K_ASDF_JAVA_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_JAVA_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Perl version from asdf.
   typeset -g POWERLEVEL9K_ASDF_PERL_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_PERL_BACKGROUND=4
   # typeset -g POWERLEVEL9K_ASDF_PERL_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_PERL_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Erlang version from asdf.
   typeset -g POWERLEVEL9K_ASDF_ERLANG_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_ERLANG_BACKGROUND=1
   # typeset -g POWERLEVEL9K_ASDF_ERLANG_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_ERLANG_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Elixir version from asdf.
   typeset -g POWERLEVEL9K_ASDF_ELIXIR_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_ELIXIR_BACKGROUND=5
   # typeset -g POWERLEVEL9K_ASDF_ELIXIR_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_ELIXIR_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   # Postgres version from asdf.
   typeset -g POWERLEVEL9K_ASDF_POSTGRES_FOREGROUND=0
   typeset -g POWERLEVEL9K_ASDF_POSTGRES_BACKGROUND=6
   # typeset -g POWERLEVEL9K_ASDF_POSTGRES_VISUAL_IDENTIFIER_EXPANSION='⭐'
+  # typeset -g POWERLEVEL9K_ASDF_POSTGRES_SHOW_ON_UPGLOB='*.foo|*.bar'
 
   ##########[ nordvpn: nordvpn connection status, linux only (https://nordvpn.com/) ]###########
   # NordVPN connection indicator color.