From ef2dfef39f82ca18ca08a1c190a812b53e149278 Mon Sep 17 00:00:00 2001
From: ADAM David Alan Martin <adam@recursive.engineer>
Date: Thu, 30 Jul 2026 02:22:54 -0400
Subject: [PATCH] Wifi strength in prompt on Linux.

---
 tcshrc.prompt.defs  |  6 ++++++
 tcshrc.prompt.final | 26 ++++++++++++++++++++++++--
 tcshrc.system.Linux |  5 +++++
 3 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/tcshrc.prompt.defs b/tcshrc.prompt.defs
index 584acdf..453c730 100644
--- a/tcshrc.prompt.defs
+++ b/tcshrc.prompt.defs
@@ -190,10 +190,16 @@ set end_prompt="%#"
 
 # The battery level thresholds are fixed, no need to recompute each prompt.
 
+set vertical_fills=( ' ' `printf "\u2581 \u2582 \u2583 \u2584 \u2585 \u2586 \u2587 \u2588"` )
+
+set horizontal_fills=( ' ' `printf "\u258f \u258e \u258d \u258c \u258b \u258a \u2589 \u2588"` )
+
 
 set battery_levels=(                 75       50        33        20     10 )
 set battery_colors=( ${bright_green} ${green} ${csi}93m ${csi}33m ${red} ${red}${blink} ___ )
 
+set wifi_levels=( ${sgr_reset}____${sgr_reset} ${red}`printf '\u2582'`___${sgr_reset} ${bright_yellow}`printf '\u2582\u2584'`__${sgr_reset} ${bright_green}`printf '\u2582\u2584\u2586'`_${sgr_reset} ${bright_blue}`printf '\u2582\u2584\u2586\u2588'`${sgr_reset} ++++ )
+
 
 alias oldp 'set prompt="$prompt_simple"; set cshenv_user_prompt_override'
 alias newp 'set prompt="$prompt_cool"; unset cshenv_user_prompt_override'
diff --git a/tcshrc.prompt.final b/tcshrc.prompt.final
index edf8ac4..c57bf2a 100644
--- a/tcshrc.prompt.final
+++ b/tcshrc.prompt.final
@@ -167,13 +167,35 @@ if( $?cshenv_show_battery_level ) then
         set battery_level=" ${battery_level}"
     endif
 
-    set battery_prefix="%{${csi}m${csi}28D%}"
+    set battery_prefix="%{${csi}m${csi}32D%}"
     set battery_prompt="%{${csi}38;2;128;128;255;3mBattery Level:${sgr_reset} ${battery_color}${battery_level}%}${percent_color_seq}%{%${sgr_reset}         %}"
 else
     set battery_prefix=""
     set battery_prompt=""
 endif
 
+set wifi_prompt=""
+if ( $?CSHENV_ENABLE_PROMPT_WIFI && $CSHENV_SYSTEM == "Linux" && -f /proc/net/wireless ) then
+	set wifi_check=(`cat /proc/net/wireless`)
+	# This one uses the Wifi special chip emoji thing.
+	#set wifi_prompt="%{`printf '\U0001F6DC'`: "
+	# Codepoints: '\u03a6\u03c6\u03d5'
+	#set wifi_prompt="%{`printf 'y\u03c6'`: "
+	# This one uses the math symbols for Y and Phi, and seems to look the best:
+	set wifi_prompt="%{\e[1000000G\e[28D\e[36m`printf '\U0001d654\U0001D74b'`\e[;1m:\e[m "
+	set wifi_levels_tmp=( ${wifi_levels} )
+	if( $#wifi_check > 27 ) then
+		set wifi_level=${wifi_check[31]:s/.//}
+
+		if( ${wifi_level} >= -90 )  shift wifi_levels_tmp
+		if( ${wifi_level} >= -80 ) shift wifi_levels_tmp
+		if( ${wifi_level} >= -75 ) shift wifi_levels_tmp
+		if( ${wifi_level} >= -50 ) shift wifi_levels_tmp
+	endif
+	set wifi_bars="${wifi_levels_tmp[1]}"
+	set wifi_prompt="${wifi_prompt}${wifi_bars}  %}"
+endif
+
 set git_prompt=""
 set git_prefix=""
 set git_tracking_stat=""
@@ -314,7 +336,7 @@ if( "" != "${internal_bracket_prompt}" ) then
 	set internal_bracket_view="${brace_color_seq}\[${internal_bracket_prompt}${brace_color_seq}\]"
 endif
 
-set prompt_cool="%{\n%}${align_prefix}${battery_prompt_view}${date_prompt_view}%{ %}${time_prompt_view}${align_suffix}${internal_bracket_view}${prompt_color_seq}${end_prompt}%{${text_color_seq}%} "
+set prompt_cool="%{\n%}${align_prefix}${battery_prompt_view}${wifi_prompt}${date_prompt_view}%{ %}${time_prompt_view}${align_suffix}${internal_bracket_view}${prompt_color_seq}${end_prompt}%{${text_color_seq}%} "
 
 
 if( ! ${?cshenv_user_prompt_override} ) then
diff --git a/tcshrc.system.Linux b/tcshrc.system.Linux
index 536915d..9e45f9b 100644
--- a/tcshrc.system.Linux
+++ b/tcshrc.system.Linux
@@ -14,6 +14,11 @@ if( ${#battery_locations} > 0 ) then
 	end
 endif
 
+set wireless_cards=( `lspci | grep Wireless` )
+if( $#wireless_cards > 0 ) then
+	setenv CSHENV_ENABLE_PROMPT_WIFI
+endif
+
 # Set the acknowledgement bit, essentially
 setenv CSHENV_SYSTEM_CONFIGURED Linux