From af8a3da1827b231de61de1d126eed1e726883086 Mon Sep 17 00:00:00 2001
From: Oliver Caldwell <ollie@oli.me.uk>
Date: Fri, 1 Dec 2023 22:47:21 +0000
Subject: [PATCH] Support Guile results that lack an assignment (like display)

---
 fnl/conjure/client/guile/socket.fnl | 29 +++++++++++++++++------------
 lua/conjure/client/guile/socket.lua | 23 ++++++++++++++---------
 2 files changed, 31 insertions(+), 21 deletions(-)

diff --git a/fnl/conjure/client/guile/socket.fnl b/fnl/conjure/client/guile/socket.fnl
index f3245424..ac63eb21 100644
--- a/fnl/conjure/client/guile/socket.fnl
+++ b/fnl/conjure/client/guile/socket.fnl
@@ -114,18 +114,23 @@
       (a.assoc (state) :repl nil))))
 
 (defn- parse-guile-result [s]
-  (if (s:find "scheme@%([%w%-%s]+%)> ")
-    (let [(ind1 ind2 result) (s:find "%$%d+ = ([^\n]+)\n")]
-      {:done? true
-       :error? false
-       :result result})
-    (if (s:find "scheme@%([%w%-%s]+%) %[%d+%]>")
-      {:done? true
-       :error? true
-       :result nil}
-      {:done? false
-       :error? false
-       :result s})))
+  (let [prompt (s:find "scheme@%([%w%-%s]+%)> ")]
+    (if prompt
+      (let [(ind1 ind2 result) (s:find "%$%d+ = ([^\n]+)\n")]
+        (if result
+          {:done? true
+           :error? false
+           :result result}
+          {:done? true
+           :error? false
+           :result (s:sub 1 (- prompt 1))}))
+      (if (s:find "scheme@%([%w%-%s]+%) %[%d+%]>")
+        {:done? true
+         :error? true
+         :result nil}
+        {:done? false
+         :error? false
+         :result s}))))
 
 (defn connect [opts]
   (disconnect)
diff --git a/lua/conjure/client/guile/socket.lua b/lua/conjure/client/guile/socket.lua
index 82b18b4c..b7e34336 100644
--- a/lua/conjure/client/guile/socket.lua
+++ b/lua/conjure/client/guile/socket.lua
@@ -154,9 +154,14 @@ local function disconnect()
 end
 _2amodule_2a["disconnect"] = disconnect
 local function parse_guile_result(s)
-  if s:find("scheme@%([%w%-%s]+%)> ") then
+  local prompt = s:find("scheme@%([%w%-%s]+%)> ")
+  if prompt then
     local ind1, ind2, result = s:find("%$%d+ = ([^\n]+)\n")
-    return {["done?"] = true, result = result, ["error?"] = false}
+    if result then
+      return {["done?"] = true, result = result, ["error?"] = false}
+    else
+      return {["done?"] = true, result = s:sub(1, (prompt - 1)), ["error?"] = false}
+    end
   else
     if s:find("scheme@%([%w%-%s]+%) %[%d+%]>") then
       return {["done?"] = true, ["error?"] = true, result = nil}
@@ -172,16 +177,16 @@ local function connect(opts)
   if ("string" ~= type(pipename)) then
     return log.append({(comment_prefix .. "g:conjure#client#guile#socket#pipename is not specified"), (comment_prefix .. "Please set it to the name of your Guile REPL pipe or pass it to :ConjureConnect [pipename]")})
   else
-    local function _23_()
+    local function _24_()
       return display_repl_status()
     end
-    local function _24_(msg, repl)
+    local function _25_(msg, repl)
       display_result(msg)
-      local function _25_()
+      local function _26_()
       end
-      return repl.send(",q\n", _25_)
+      return repl.send(",q\n", _26_)
     end
-    return a.assoc(state(), "repl", socket.start({["parse-output"] = parse_guile_result, pipename = pipename, ["on-success"] = _23_, ["on-error"] = _24_, ["on-failure"] = disconnect, ["on-close"] = disconnect, ["on-stray-output"] = display_result}))
+    return a.assoc(state(), "repl", socket.start({["parse-output"] = parse_guile_result, pipename = pipename, ["on-success"] = _24_, ["on-error"] = _25_, ["on-failure"] = disconnect, ["on-close"] = disconnect, ["on-stray-output"] = display_result}))
   end
 end
 _2amodule_2a["connect"] = connect
@@ -190,10 +195,10 @@ local function on_exit()
 end
 _2amodule_2a["on-exit"] = on_exit
 local function on_filetype()
-  local function _27_()
+  local function _28_()
     return connect()
   end
-  mapping.buf("GuileConnect", cfg({"mapping", "connect"}), _27_, {desc = "Connect to a REPL"})
+  mapping.buf("GuileConnect", cfg({"mapping", "connect"}), _28_, {desc = "Connect to a REPL"})
   return mapping.buf("GuileDisconnect", cfg({"mapping", "disconnect"}), disconnect, {desc = "Disconnect from the REPL"})
 end
 _2amodule_2a["on-filetype"] = on_filetype