Test for manulpages in default-config.

Only show the "Help" menu if the manual pages are installed. This
is done by testing for the fvwm3all manual page, and the item
entry to popup the "Help" menu is only added to the root menu
if the fvwm3all manual page exists.

default-config/config

@@ -52,6 +52,11 @@ InfoStoreAdd runcmdopt "-nb '#2b4e5e'"
 #
 DesktopConfiguration global
 
+# Test to determine if the fvwm manual pages have been installed.
+# This is used to determine if the help menu is shown or not.
+# Test both man -w and man -f as not all systems support -w.
+PipeRead 'man -w fvwm3all >/dev/null 2>&1 || man -f fvwm3all >/dev/null 2>&1 && echo "InfoStoreAdd fvwm3man True"'
+
 ###########
 # 1: Functions
 #
@@ -320,7 +325,7 @@ Test (x $[infostore.runcmd]) + "R&un Command%icons/run_arrow.png%" Exec exec $[i
 Test (x $[FVWM_MODULEDIR]/FvwmConsole) + "Fvwm&Console%icons/terminal.png%" Module FvwmConsole -terminal $[infostore.terminal]
 Test (x FvwmPrompt) + "&FvwmPrompt%icons/terminal.png%" Exec exec $[infostore.terminal] -e FvwmPrompt
 + "$[gt.&Wallpapers]%icons/wallpaper.png%" Popup BGMenu
-+ "$[gt.M&an Pages]%icons/help.png%"       Popup MenuFvwmManPages
+Test (EnvMatch infostore.fvwm3man True) + "$[gt.M&an Pages]%icons/help.png%"       Popup MenuFvwmManPages
 + "$[gt.Cop&y Config]%icons/conf.png%"     FvwmScript FvwmScript-ConfirmCopyConfig
 + "" Nop
 + "$[gt.Re&fresh]%icons/refresh.png%" Refresh
@@ -702,4 +707,4 @@ DestroyModuleConfig EventNewDesk:*
 # exists, then read it. This allows changes to default-config settings
 # without needing a full copy of the default-config. This will also allow
 # default-config changes to get used after upgrades (if applicable).
-Test (f $[FVWM_USERDIR]/local.config) Read $[FVWM_USERDIR]/local.config
+Test (f $[FVWM_USERDIR]/local.config) Read $[FVWM_USERDIR]/local.config