From 626f4a46ba00b2d2d3205cef44565fd7e9b0f7e5 2025-03-07 19:35:30
From: Branko Majic <branko@majic.rs>
Date: 2025-03-07 19:35:30
Subject: [PATCH] [cheatsheet_viewer.sh] Keep track of (and display) last opened cheatsheet when using the toggle command.

---

diff --git a/utils/cheatsheet_viewer.sh b/utils/cheatsheet_viewer.sh
index 863a02ff09e0806629e7d170dac1393ec72fe8d4..e9cd58547aedc214e19f718c25c4e5e17349af13 100755
--- a/utils/cheatsheet_viewer.sh
+++ b/utils/cheatsheet_viewer.sh
@@ -104,7 +104,9 @@ toggle [PROFILE]
   Toggles display of cheatsheets from the specified profile (default
   profile name is 'default'). Unlike the display command, the toggle
   command is more intelligent and ensures that only one instance of
-  cheatsheet-specific pqiv is present.
+  cheatsheet-specific pqiv is present. Thex toggle command also keeps
+  track of which cheatsheet was last selected, and will update the
+  image viewer to point to it when opened.
 
 $PROGRAM accepts the following options:
 
@@ -300,8 +302,9 @@ function command_toggle() {
     local profile="$2"
     local profile_dir="$config_dir/profiles/$profile"
     local cheatsheets_file="$profile_dir/cheatsheets"
+    local last_cheatsheet_file="$profile_dir/last"
 
-    local current_process_id current_profile
+    local current_process_id current_profile last_cheatsheet
 
     local cheatsheets=()
 
@@ -319,6 +322,12 @@ function command_toggle() {
         return 0
     fi
 
+    if [[ -e $last_cheatsheet_file ]]; then
+        last_cheatsheet=$(< "$last_cheatsheet_file")
+    else
+        last_cheatsheet=""
+    fi
+
     # Get information about existing running cheatsheet viewer pqiv instance (if any).
     current_process_id=$(wmctrl -lp | grep 'cheatsheet-viewer-' | awk '{print $3}')
     current_profile=$(wmctrl -lp | grep 'cheatsheet-viewer-' | awk '{print $5}' | sed -e 's/cheatsheet-viewer-//')
@@ -339,7 +348,18 @@ function command_toggle() {
             "--window-title=cheatsheet-viewer-$profile"
         )
 
-        pqiv "${pqiv_options[@]}" "${cheatsheets[@]}" &
+        if [[ -n $last_cheatsheet && -f $last_cheatsheet ]]; then
+            pqiv_options+=("--action=goto_file_byname($last_cheatsheet); set_status_output(1)")
+        else
+            pqiv_options+=("--action=set_status_output(1)")
+        fi
+
+        (
+            while read -r line; do
+                eval "$line"
+                echo "$CURRENT_FILE_NAME" > "$profile_dir/last"
+            done < <(pqiv "${pqiv_options[@]}" "${cheatsheets[@]}" | grep --line-buffered '^CURRENT_FILE_NAME=')
+        ) &
     fi
 }