Error:Searching for program: No such file or directory,lua

[immerrr]

Error:Searching for program: No such file or directory,lua

[immerrr]

Ok, if you need to alter execution path inside Emacs, you need to alter exec-path variable.

(add-to-list 'exec-path "/usr/local/bin")

exec-path is populated at startup and altering PATH afterwards doesn't change behavior of start-process function, it only affects shell-command. But I'd really suggest one of the following:

• if Lua is not in path, but you'd like to use it on day-to-day basis, you need to alter $PATH in $HOME/.profile as I've shown in commentary above
• if Lua is not in path, but you only want to use it as inferior process for lua-mode, change value of lua-default-application variable

Why does it lock your Emacs is an interesting question, but I can't really reproduce it and given the fact that subprocess management code is outdated and really far from perfect, I'm going to rewrite it anyway. So, no use in fixing bugs in what's going to be rewritten soon (hopefully).

PS. you can try C-g or ESC ESC ESC to unlock Emacs, it usually helps.

[immerrr]

What does it say when you do M-! lua (which is M-x shell-command lua) ?

[wolfand11]

it say: Shell command succeeded with no output
thank you for your response

[wolfand11]

when i M+x lua-send-buffer. it show me:
Wrote /var/folders/hj/3mbrpy_j5xs2_......./T/lua-7714es
Searching for program: No such file or directory, lua

then, i invoke lua-send-buffer again, my emacs is blocked. it's dead.

[immerrr]

One more thing to check: M-x shell-command echo $PATH

[wolfand11]

it show me "/usr/local/bin/"

[immerrr]

Unrelated to the original question -- or maybe related, I'm not sure yet -- that seems wrong. This means that emacs won't be able to access programs in /bin & /usr/bin. Usually, if you need to alter path, you prepend it with something, e.g.

PATH=/my/other/bindir:$PATH

[wolfand11]

thank you very much
i change (setenv "PATH" "/usr/local/bin/") to (add-to-list 'exec-path "/usr/local/bin") in .emacs. it worked!