From 4a5c693b6651df31dc22ec7aa360a64ff88d977f Mon Sep 17 00:00:00 2001
From: Abdessamad Derraz <3028866+Abdess@users.noreply.github.com>
Date: Tue, 10 Nov 2026 13:06:35 +0100
Subject: [PATCH] fix: place GZDoom's IWADs in RetroDECK's roms/doom

GZDoom collects its IWAD candidates from [IWADSearch.Directories], reads
the support WAD there and the Load files from the IWAD's own folder
(src/d_iwad.cpp:456-476, 593-624, 862-901). RetroDECK lists
RETRODECKROMSDIR/doom there (gzdoom/rd_assets/rd_config/gzdoom.ini:9),
which component_prepare.sh:27 rewrites to $roms_path/doom. The extractor
read only the BIOS placeholder of a preset: it now records every line
naming the BIOS or the roms folder the script rewrites, with that sed
line in its source. $roms_path, whose default is the roms root
(config/retrodeck/retrodeck.json:5), is read as that root.

The profile names IWADSearch.Directories as a pool and lays its IWADs
and their support and Load files out at its top. On RetroDECK the 20
held IWADs land in roms/doom, the 23 others are named missing there.
The root copies stay for prboom and uzdoom, which claim them. No other
platform hands GZDoom that list, so none changes.
---
 emulators/gzdoom.yml                   |  46 +++++++
 platforms/retrodeck.yml                | 159 +++++++++++--------------
 scripts/launchers.py                   |  14 ++-
 scripts/scraper/retrodeck_launchers.py |  33 +++--
 tests/test_launcher_placement.py       |  20 ++++
 tests/test_launchers_retrodeck.py      |   2 +-
 6 files changed, 176 insertions(+), 98 deletions(-)

diff --git a/emulators/gzdoom.yml b/emulators/gzdoom.yml
index 94a554604..212441074 100644
--- a/emulators/gzdoom.yml
+++ b/emulators/gzdoom.yml
@@ -13,6 +13,9 @@ version_basis:
 display_name: "GZDoom"
 cores: ["GZDoom", "gzdoom-sa"]
 systems: [doom, heretic, hexen, strife, chex]
+standalone_pools:
+  "[IWADSearch.Directories] Path": ""
+  "[IWADSearch.Directories] RecursivePath": ""
 
 notes: |
   Doom-engine source port by Christoph Oelckers. Supports Doom, Heretic,
@@ -161,6 +164,7 @@ files:
   - name: "doom.wad"
     category: game_data
     system: doom
+    path: "doom.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:420, 437, 659"
     note: "The Ultimate DOOM and DOOM Registered both use this name and are told apart by their lumps."
@@ -168,108 +172,126 @@ files:
   - name: "doom2.wad"
     category: game_data
     system: doom
+    path: "doom2.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:640, 653"
 
   - name: "doom2f.wad"
     category: game_data
     system: doom
+    path: "doom2f.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:625, 657"
 
   - name: "doombfg.wad"
     category: game_data
     system: doom
+    path: "doombfg.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:332, 666"
 
   - name: "doom2bfg.wad"
     category: game_data
     system: doom
+    path: "doom2bfg.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:560, 667"
 
   - name: "doomunity.wad"
     category: game_data
     system: doom
+    path: "doomunity.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:369, 661"
 
   - name: "doom2unity.wad"
     category: game_data
     system: doom
+    path: "doom2unity.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:592, 655"
 
   - name: "doomkex.wad"
     category: game_data
     system: doom
+    path: "doomkex.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:350, 662"
 
   - name: "doom2kex.wad"
     category: game_data
     system: doom
+    path: "doom2kex.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:576, 656"
 
   - name: "doomxbox.wad"
     category: game_data
     system: doom
+    path: "doomxbox.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:403, 660"
 
   - name: "doom2xbox.wad"
     category: game_data
     system: doom
+    path: "doom2xbox.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:608, 654"
 
   - name: "doom_complete.pk3"
     category: game_data
     system: doom
+    path: "doom_complete.pk3"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:389, 652"
 
   - name: "plutonia.wad"
     category: game_data
     system: doom
+    path: "plutonia.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:545, 670"
 
   - name: "plutoniaunity.wad"
     category: game_data
     system: doom
+    path: "plutoniaunity.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:514, 671"
 
   - name: "plutoniakex.wad"
     category: game_data
     system: doom
+    path: "plutoniakex.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:529, 672"
 
   - name: "tnt.wad"
     category: game_data
     system: doom
+    path: "tnt.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:499, 673"
 
   - name: "tntunity.wad"
     category: game_data
     system: doom
+    path: "tntunity.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:468, 674"
 
   - name: "tntkex.wad"
     category: game_data
     system: doom
+    path: "tntkex.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:483, 675"
 
   - name: "nerve.wad"
     category: game_data
     system: doom
+    path: "nerve.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:565, 614, src/d_iwad.cpp:877-895"
     note: "No Rest for the Living. Autoloaded by Doom 2 BFG and Xbox editions."
@@ -277,6 +299,7 @@ files:
   - name: "nerveunity.wad"
     category: game_data
     system: doom
+    path: "nerveunity.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:598, src/d_iwad.cpp:877-895"
     note: "Loaded from the IWAD directory by DOOM 2: Unity Edition."
@@ -284,6 +307,7 @@ files:
   - name: "extras.wad"
     category: game_data
     system: doom
+    path: "extras.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:357, 376, 488, 534, 582, 598"
     note: "Loaded from the IWAD directory by the KEX and Unity editions."
@@ -291,6 +315,7 @@ files:
   - name: "soundtrack"
     category: game_data
     system: doom
+    path: "soundtrack"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:376, 598, src/d_iwad.cpp:877-895"
     note: "Loaded from the IWAD directory by the DOOM and DOOM 2 Unity editions."
@@ -298,6 +323,7 @@ files:
   - name: "id24res.wad"
     category: game_data
     system: doom
+    path: "id24res.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:341, 360, 379, src/d_iwad.cpp:862-875"
     note: "id24 resource WAD. SupportWAD of every id IWAD block, loaded when found and i_loadsupportwad is set."
@@ -307,6 +333,7 @@ files:
   - name: "freedoom1.wad"
     category: game_data
     system: doom
+    path: "freedoom1.wad"
     required: false
     installed_on: [retropie]
     source_ref: "wadsrc_extra/static/iwadinfo.txt:307, 676"
@@ -314,6 +341,7 @@ files:
   - name: "freedoom2.wad"
     category: game_data
     system: doom
+    path: "freedoom2.wad"
     required: false
     installed_on: [retropie]
     source_ref: "wadsrc_extra/static/iwadinfo.txt:294, 677"
@@ -321,6 +349,7 @@ files:
   - name: "freedm.wad"
     category: game_data
     system: doom
+    path: "freedm.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:281, 680"
 
@@ -329,6 +358,7 @@ files:
   - name: "heretic.wad"
     category: game_data
     system: heretic
+    path: "heretic.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:241, 244, 254, 257, 681"
     note: "Both Heretic and Shadow of the Serpent Riders use this name and are told apart by the EXTENDED lump."
@@ -337,6 +367,7 @@ files:
     aliases: ["blasphemer.wad"]
     category: game_data
     system: heretic
+    path: "blasphem.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:228, 692-693"
 
@@ -345,12 +376,14 @@ files:
   - name: "hexen.wad"
     category: game_data
     system: hexen
+    path: "hexen.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:188, 684"
 
   - name: "hexdd.wad"
     category: game_data
     system: hexen
+    path: "hexdd.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:196-207, 685"
     note: "Deathkings expansion. Requires hexen.wad (Required = Hexen: Beyond Heretic)."
@@ -360,12 +393,14 @@ files:
   - name: "strife1.wad"
     category: game_data
     system: strife
+    path: "strife1.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:151, 688"
 
   - name: "sve.wad"
     category: game_data
     system: strife
+    path: "sve.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:136, 140, 689"
     note: "Veteran Edition. Required = Strife: Quest for the Sigil (loads voices.wad)."
@@ -373,6 +408,7 @@ files:
   - name: "voices.wad"
     category: game_data
     system: strife
+    path: "voices.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:142, 155"
 
@@ -381,12 +417,14 @@ files:
   - name: "chex.wad"
     category: game_data
     system: chex
+    path: "chex.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:123, 694"
 
   - name: "chex3.wad"
     category: game_data
     system: chex
+    path: "chex3.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:109, 695"
 
@@ -395,12 +433,14 @@ files:
   - name: "hacx.wad"
     category: game_data
     system: doom
+    path: "hacx.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:83, 698"
 
   - name: "hacx2.wad"
     category: game_data
     system: doom
+    path: "hacx2.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:65-75, 699, src/d_iwad.cpp:351-394, src/common/filesystem/source/resourcefile.cpp:156-174"
     note: "Identified by the MAP01 map and the HACX-E lump, whatever the container: every candidate is opened by its magic, so a zip under this name is read as a pk3. The Hacx 2.0 repository builds that zip from src/, where hacx-e.txt is the HACX-E lump and maps/MAP01.wad the first map."
@@ -408,18 +448,21 @@ files:
   - name: "action2.wad"
     category: game_data
     system: doom
+    path: "action2.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:97, 696"
 
   - name: "harm1.wad"
     category: game_data
     system: doom
+    path: "harm1.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:57, 697"
 
   - name: "square.pk3"
     category: game_data
     system: doom
+    path: "square.pk3"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:33"
     note: "Absent from the Names block: picked up only when named with -iwad."
@@ -427,17 +470,20 @@ files:
   - name: "square1.pk3"
     category: game_data
     system: doom
+    path: "square1.pk3"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:45, 700"
 
   - name: "delaweare.wad"
     category: game_data
     system: doom
+    path: "delaweare.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:22, 701"
 
   - name: "rotwb.wad"
     category: game_data
     system: doom
+    path: "rotwb.wad"
     required: false
     source_ref: "wadsrc_extra/static/iwadinfo.txt:9, 702"
diff --git a/platforms/retrodeck.yml b/platforms/retrodeck.yml
index 0d801412c..3592a2537 100644
--- a/platforms/retrodeck.yml
+++ b/platforms/retrodeck.yml
@@ -16756,6 +16756,24 @@ launchers:
   passes_to: "settings.ini [BIOS] SearchDirectory"
   fails_when_missing: false
   source_ref: "duckstation/component_prepare.sh:15, 33"
+- emulator: gzdoom
+  build: standalone
+  kind: passes_path
+  names: []
+  search_dir: $roms_path/doom
+  passes_to: "gzdoom.ini [IWADSearch.Directories] Path"
+  fails_when_missing: false
+  source_ref: "gzdoom/rd_assets/rd_config/gzdoom.ini:9, gzdoom/component_prepare.sh:23,\
+    \ 27-28"
+- emulator: gzdoom
+  build: standalone
+  kind: passes_path
+  names: []
+  search_dir: $roms_path/doom
+  passes_to: "gzdoom.ini [FileSearch.Directories] Path"
+  fails_when_missing: false
+  source_ref: "gzdoom/rd_assets/rd_config/gzdoom.ini:18, gzdoom/component_prepare.sh:23,\
+    \ 27-28"
 - emulator: gzdoom
   build: standalone
   kind: passes_path
@@ -16765,6 +16783,15 @@ launchers:
   fails_when_missing: false
   source_ref: "gzdoom/rd_assets/rd_config/gzdoom.ini:19, gzdoom/component_prepare.sh:23,\
     \ 28"
+- emulator: gzdoom
+  build: standalone
+  kind: passes_path
+  names: []
+  search_dir: $roms_path/bios/gzdoom
+  passes_to: "gzdoom.ini [SoundfontSearch.Directories] Path"
+  fails_when_missing: false
+  source_ref: "gzdoom/rd_assets/rd_config/gzdoom.ini:31, gzdoom/component_prepare.sh:23,\
+    \ 27-28"
 - emulator: mame
   build: standalone
   kind: passes_path
@@ -16996,8 +17023,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: xroar.conf rompath
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:290, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:290, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17007,8 +17033,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragon
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:291, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:291, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17023,8 +17048,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist d64_1
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:292, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:292, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17038,8 +17062,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist d64_2
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:293, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:293, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17052,8 +17075,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist d32
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:294, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:294, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17065,8 +17087,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist d200e_1
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:295, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:295, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17078,8 +17099,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist d200e_2
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:296, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:296, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17095,8 +17115,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragon64
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:297, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:297, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17110,8 +17129,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragon64_alt
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:298, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:298, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17125,8 +17143,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragon32
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:299, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:299, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17145,8 +17162,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragon200e
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:300, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:300, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17163,8 +17179,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragon200e_alt
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:301, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:301, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17175,8 +17190,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragon200e_charset
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:302, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:302, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17190,8 +17204,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragonpro_boot
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:303, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:303, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17209,8 +17222,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragonpro_basic
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:304, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:304, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17224,8 +17236,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist coco
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:305, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:305, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17238,8 +17249,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist coco_ext
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:306, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:306, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17253,8 +17263,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist coco1
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:307, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:307, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17268,8 +17277,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist coco1e
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:308, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:308, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17282,8 +17290,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist coco1e_ext
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:309, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:309, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17297,8 +17304,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist coco2
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:310, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:310, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17311,8 +17317,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist coco2_ext
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:311, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:311, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17326,8 +17331,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist coco2b
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:312, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:312, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17338,8 +17342,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist deluxecoco
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:313, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:313, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17349,8 +17352,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist deluxecoco1
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:314, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:314, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17360,8 +17362,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist deluxecoco2
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:315, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:315, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17372,8 +17373,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist deluxecoco3
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:316, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:316, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17384,8 +17384,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist mx1600
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:317, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:317, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17395,8 +17394,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist mx1600ext
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:318, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:318, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17406,8 +17404,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist coco3
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:319, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:319, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17417,8 +17414,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist coco3p
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:320, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:320, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17429,8 +17425,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist glenside_ide
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:321, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:321, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17440,8 +17435,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist mc10
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:322, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:322, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17451,8 +17445,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist alice
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:323, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:323, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17467,8 +17460,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragondos
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:324, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:324, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17481,8 +17473,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dosplus
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:325, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:325, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17495,8 +17486,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist superdos
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:326, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:326, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17508,8 +17498,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist cumana
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:327, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:327, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17535,8 +17524,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist dragondos_compat
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:328, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:328, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17547,8 +17535,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist rsdos
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:329, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:329, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17563,8 +17550,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist delta
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:330, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:330, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17574,8 +17560,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist rsdos_becker
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:331, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:331, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17586,8 +17571,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist mcx128
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:332, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:332, xroar/component_prepare.sh:13-15"
 - emulator: xroar
   build: standalone
   kind: names_searched
@@ -17598,8 +17582,7 @@ launchers:
   search_dir: "$roms_path/coco:$roms_path/dragon32:$roms_path/tanodragon:$bios_path"
   passes_to: romlist mcx128_azerty
   fails_when_missing: false
-  source_ref: "xroar/rd_assets/rd_config/xroar.conf:333, xroar/component_prepare.sh:13,\
-    \ 15"
+  source_ref: "xroar/rd_assets/rd_config/xroar.conf:333, xroar/component_prepare.sh:13-15"
 - emulator: retroarch
   build: libretro
   kind: core_option
diff --git a/scripts/launchers.py b/scripts/launchers.py
index 4e3c103f4..6d959339a 100644
--- a/scripts/launchers.py
+++ b/scripts/launchers.py
@@ -312,6 +312,11 @@ def launcher_places(config: dict) -> list[LauncherPlace]:
 # component scripts $bios_path.
 BIOS_ROOT_VARIABLES = ("$biosdir", "$home/RetroPie/BIOS", "${biosPath}", "$bios_path")
 
+# The name a platform's launch code gives its roms root: RetroDECK's
+# component scripts write $roms_path (retrodeck_launchers), the setting whose
+# default is the roms root (config/retrodeck/retrodeck.json:5).
+ROMS_ROOT_VARIABLES = ("$roms_path", "${roms_path}")
+
 # The kinds that hand an emulator a whole directory. A scans_dir record sets
 # the directory the emulator picks its file from: ROCKNIX writes ARMSX2's
 # [Folders] Bios, EmuDeck PCSX2's.
@@ -591,8 +596,15 @@ def folder_in_roms(directory: str, config: dict) -> str | None:
     (``roms_root.path``): ROCKNIX's /storage/roms, which holds its BIOS
     folder and the folders its launchers run programs from.
     """
-    from common import ROMS_ROOT  # noqa: PLC0415
+    from common import ROMS_ROOT, outer_layout  # noqa: PLC0415
 
+    spelled = directory.strip().rstrip("/")
+    for variable in ROMS_ROOT_VARIABLES:
+        if outer_layout(config, ROMS_ROOT) and (
+            spelled == variable or spelled.startswith(variable + "/")
+        ):
+            rest = spelled[len(variable) + 1:]
+            return None if re.search(r"[\s<>$:;]", rest) else rest
     return folder_in_root(directory, config, ROMS_ROOT)
 
 
diff --git a/scripts/scraper/retrodeck_launchers.py b/scripts/scraper/retrodeck_launchers.py
index fb838c1b1..51b6cf06b 100644
--- a/scripts/scraper/retrodeck_launchers.py
+++ b/scripts/scraper/retrodeck_launchers.py
@@ -30,6 +30,10 @@ except ImportError:
 
 BIOS = "$bios_path"
 PLACEHOLDER = "RETRODECKBIOSDIR"
+# The roms folder in the same presets: GZDoom's IWADSearch.Directories holds
+# RETRODECKROMSDIR/doom (gzdoom/rd_assets/rd_config/gzdoom.ini:9), which
+# gzdoom/component_prepare.sh:27 rewrites to $roms_path.
+ROMS_PLACEHOLDER = "RETRODECKROMSDIR"
 CORE_OPTIONS = "retroarch/rd_assets/rd_config/retroarch-core-options.cfg"
 # The component that runs libretro cores.
 LIBRETRO_COMPONENT = "retroarch"
@@ -282,7 +286,11 @@ class Component:
         )
 
     def _preset(self, script: Script, number: int, words: list[str]) -> None:
-        """`sed -i "s#RETRODECKBIOSDIR#${bios_path}#g" "$cfg"` on a preset copied just above."""
+        """`sed -i "s#RETRODECKBIOSDIR#${bios_path}#g" "$cfg"` on a preset copied just above.
+
+        Each line naming the BIOS or the roms folder is a record: a search
+        list can mix them (XRoar's rompath, GZDoom's IWAD directories).
+        """
         target = words[-1]
         substitutions = self._substitutions(script, target)
         copied = None
@@ -302,17 +310,25 @@ class Component:
             stripped = line.strip()
             if re.fullmatch(r"\[[^\]]+\]", stripped):
                 section = stripped
-            if PLACEHOLDER not in stripped or stripped.startswith("#"):
+            if stripped.startswith("#") or not any(
+                p in stripped for p in (PLACEHOLDER, ROMS_PLACEHOLDER)
+            ):
                 continue
             setting = re.match(r"^([\w.$()-]+)\s*(?:=|\s)\s*(.+)$", stripped)
             if setting is None:
                 raise LauncherPatternMissing(f"{preset}:{line_no}", f"placeholder in {stripped}")
+            named = [p for p in substitutions if p in stripped]
+            if PLACEHOLDER not in stripped and not named:
+                # A roms placeholder the script leaves as written.
+                continue
             key, value = setting.group(1), _unquote(setting.group(2))
-            for placeholder, variable in substitutions.items():
+            for placeholder, (variable, _line) in substitutions.items():
                 value = value.replace(placeholder, variable)
             where = f"{section} {key}" if section else key
-            found += 1
-            applied = [(script.path, copied[0]), (script.path, number)]
+            found += PLACEHOLDER in stripped
+            applied = [(script.path, copied[0]), (script.path, number)] + [
+                (script.path, substitutions[p][1]) for p in named
+            ]
             self.record(
                 "passes_path", [], [(preset, line_no)] + applied,
                 search_dir=value, passes_to=f"{self.config_name(target)} {where}",
@@ -324,12 +340,13 @@ class Component:
             raise LauncherPatternMissing(preset, f"no {PLACEHOLDER} line")
 
     @staticmethod
-    def _substitutions(script: Script, target: str) -> dict[str, str]:
+    def _substitutions(script: Script, target: str) -> dict[str, tuple[str, int]]:
+        """Each placeholder sed rewrites in ``target``: (variable, line)."""
         found = {}
-        for line in script.lines:
+        for line_no, line in enumerate(script.lines, 1):
             for m in re.finditer(r"s#(RETRODECK\w+)#\$\{?(\w+)\}?#g[\"']?\s+\"([^\"]+)\"", line):
                 if m.group(3) == target:
-                    found[m.group(1)] = f"${m.group(2)}"
+                    found[m.group(1)] = (f"${m.group(2)}", line_no)
         return found
 
     def romlists(
diff --git a/tests/test_launcher_placement.py b/tests/test_launcher_placement.py
index 0cf499fe6..2ffa4d23c 100644
--- a/tests/test_launcher_placement.py
+++ b/tests/test_launcher_placement.py
@@ -859,5 +859,25 @@ class MameSearchPaths(unittest.TestCase):
             self.assertEqual(entry["standalone_path"], "psxmame/bios/" + entry["name"])
 
 
+class GzdoomOnRetroDECK(unittest.TestCase):
+    """RetroDECK writes RETRODECKROMSDIR/doom into [IWADSearch.Directories]
+    (gzdoom.ini:9, component_prepare.sh:27)."""
+
+    def test_the_iwads_land_in_roms_doom(self) -> None:
+        view = standalone_view("gzdoom", "retrodeck")
+        iwads = [e for e in view["files"] if e.get("system")]
+        self.assertEqual(len(iwads), 43)
+        for entry in iwads:
+            self.assertEqual(entry["standalone_path"], "roms/doom/" + entry["name"])
+            self.assertTrue(entry.get("unprefixed"))
+        # The engine pk3s are read beside the executable first.
+        (pk3,) = [e for e in view["files"] if e["name"] == "gzdoom.pk3"]
+        self.assertNotIn("standalone_path", pk3)
+
+    def test_another_platform_keeps_them(self) -> None:
+        view = standalone_view("gzdoom", "batocera")
+        self.assertFalse(any(e.get("standalone_path") for e in view["files"]))
+
+
 if __name__ == "__main__":
     unittest.main()
diff --git a/tests/test_launchers_retrodeck.py b/tests/test_launchers_retrodeck.py
index 96401837c..e894d6838 100644
--- a/tests/test_launchers_retrodeck.py
+++ b/tests/test_launchers_retrodeck.py
@@ -289,7 +289,7 @@ class Presets(unittest.TestCase):
         self.assertEqual(lists["dragon64"]["names"][-1], "dragon")
         self.assertEqual(
             lists["d64_1"]["source_ref"],
-            "xroar/rd_assets/rd_config/xroar.conf:292, xroar/component_prepare.sh:13, 15",
+            "xroar/rd_assets/rd_config/xroar.conf:292, xroar/component_prepare.sh:13-15",
         )
 
     def test_a_reference_to_an_unknown_romlist_raises(self):