From d155edcbcbffcc1f53ed1ec0d7cb2b33831aded8 Mon Sep 17 00:00:00 2001
From: Debian Live user <user@debian-BULLSEYE-live-builder-AMD64>
Date: Sat, 29 Apr 2023 16:27:38 -0400
Subject: firestartx: working w/ new code

---
 src/firestartx | 72 +++++++++++++++++++++++++++++++++++-----------------------
 1 file changed, 43 insertions(+), 29 deletions(-)

diff --git a/src/firestartx b/src/firestartx
index 636fc84..1129f9d 100755
--- a/src/firestartx
+++ b/src/firestartx
@@ -1,5 +1,10 @@
 #!/bin/bash
 
+if [ $# = 0 ]
+then
+    set -- firestart
+fi
+
 get_new_display()
 {
     for ((n=1; n<99; ++n))
@@ -15,44 +20,53 @@ get_new_display()
 
 get_new_display || exit
 
-if [ $# = 0 ]
-then
-    set -- firestart
-fi
+dpi=$(xrdb -query | sed -n -e 's/^Xft.dpi:[ \t]*//p')
 
-# TITLE=$* # lol, startx doesn't support arguments with spaces
-TITLE=$1
-TITLE= # blank title documents the screen grab keys in the title
+launch_xserver()
+{
+    "$@" -- "$(which Xephyr)" "$NEW_DISPLAY" \
+        -resizeable \
+        -p 0 \
+        -terminate \
+        ${dpi:+ -dpi "$dpi"}
+}
 
 if [ "$1" != firestart ]
 then
-    USE_XINIT=y
-fi
-
-if [ "$USE_XINIT" ]
-then
-    set -x
     case "$1" in
-        /*) ;;
-        *) f1=$(which "$1") || exit
-           shift
-           set -- "$f1" "$@"
-           ;;
+        */*)
+            [ -x "$1" ] || exit
+            ;;
+        *)
+            f1=$(command -v "$1") || exit
+            shift
+            set -- "$f1" "$@"
+            ;;
     esac
-    xinit "$@" -- $(which Xephyr) "$NEW_DISPLAY" -resizeable -p 0 -terminate ${TITLE:+ -title "$TITLE"}
+    launch_xserver xinit "$@"
 else
-    set -x
-    dpi=$(xrdb -query | sed -n -e 's/^Xft.dpi:[ \t]*//p')
-    startx -- "$(which Xephyr)" "$NEW_DISPLAY" \
-      -resizeable \
-      -p 0 \
-      -terminate \
-      ${TITLE:+ -title "$TITLE"} \
-      ${dpi:+ -dpi "$dpi"} \
-      &
-    if [ $# -gt 0 ]
+    XSESSION_IS_FIRESTARTX=
+    if grep -qF XSESSION_IS_FIRESTARTX ~/.xsession
     then
+        # Our xsession will launch firestartx along with i3, etc.
+        XSESSION_IS_FIRESTARTX=y launch_xserver startx ~/.xsession &
+    else
+        # We need to wait for xrdb to be run, or else firefox will
+        # disastrously start without the Xft.dpi setting.  But we
+        # cannot poll on the setting forever since it might not exist
+        # in every configuration.
+        launch_xserver startx &
+        enable -f /usr/lib/bash/sleep >/dev/null 2>&1 || true
+        set -x
+        tries=0
+        while [ $tries -lt 40 ] &&
+              ! xrdb -display "$NEW_DISPLAY" -query | grep -q '^Xft.dpi:'
+        do
+            sleep 0.05
+            tries=$((tries + 1))
+        done
         DISPLAY=$NEW_DISPLAY "$@" &
     fi
+
     wait
 fi
-- 
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