Rename lush Lua API: command→capture, subcmd→run, getenv→envget, setenv→envset

Lua-facing names only; C internals unchanged.

  lush.capture(str)     — return {code, stdout, stderr} table
  lush.run(str)         — return stripped stdout string
  lush.interactive(str) — run with TTY, set _, return result
  lush.envget(name)     — get environment variable
  lush.envset(name,val) — set environment variable

testes/lush/lushlib.lua

@@ -13,30 +13,30 @@ end
 -- === named functions are accessible ===
 
 do
-  assert(type(lush.command) == "function", "lush.command missing")
+  assert(type(lush.capture) == "function", "lush.capture missing")
   assert(type(lush.interactive) == "function", "lush.interactive missing")
-  assert(type(lush.getenv) == "function", "lush.getenv missing")
-  assert(type(lush.setenv) == "function", "lush.setenv missing")
-  assert(type(lush.subcmd) == "function", "lush.subcmd missing")
+  assert(type(lush.run) == "function", "lush.run missing")
+  assert(type(lush.envget) == "function", "lush.envget missing")
+  assert(type(lush.envset) == "function", "lush.envset missing")
 end
 
 
--- === lush.command works like backtick ===
+-- === lush.capture works like backtick ===
 
 do
-  local r = lush.command("echo hello")
-  assert(r.code == 0, "lush.command failed")
+  local r = lush.capture("echo hello")
+  assert(r.code == 0, "lush.capture failed")
   assert(r.stdout == "hello\n", "expected 'hello\\n', got: " .. r.stdout)
 end
 
 
--- === lush.getenv / lush.setenv ===
+-- === lush.envget / lush.envset ===
 
 do
-  lush.setenv("_LUSH_TEST_VAR", "42")
-  assert(lush.getenv("_LUSH_TEST_VAR") == "42")
-  lush.setenv("_LUSH_TEST_VAR", nil)
-  assert(lush.getenv("_LUSH_TEST_VAR") == nil)
+  lush.envset("_LUSH_TEST_VAR", "42")
+  assert(lush.envget("_LUSH_TEST_VAR") == "42")
+  lush.envset("_LUSH_TEST_VAR", nil)
+  assert(lush.envget("_LUSH_TEST_VAR") == nil)
 end
 
 
@@ -72,7 +72,7 @@ do
 end
 
 
--- === user-defined builtin via lush.command ===
+-- === user-defined builtin via lush.capture ===
 
 do
   lush.builtins.myecho = function(cmd, ...)
@@ -84,7 +84,7 @@ do
     return t
   end
 
-  local r = lush.command("myecho foo bar")
+  local r = lush.capture("myecho foo bar")
   assert(r.code == 0)
   assert(r.stdout == "foo bar\n",
          "expected 'foo bar\\n', got: " .. r.stdout)
@@ -162,11 +162,11 @@ do
 end
 
 
--- === alias works with lush.command ===
+-- === alias works with lush.capture ===
 
 do
   lush.aliases.myecho = "echo via-command"
-  local r = lush.command("myecho")
+  local r = lush.capture("myecho")
   assert(r.code == 0)
   assert(r.stdout == "via-command\n",
          "expected 'via-command\\n', got: " .. r.stdout)
@@ -182,10 +182,10 @@ do
   assert(r.stdout == "works\n")
 
   -- $VAR expansion
-  lush.setenv("_LUSH_LIB_TEST", "yes")
+  lush.envset("_LUSH_LIB_TEST", "yes")
   local val = $_LUSH_LIB_TEST
   assert(val == "yes", "expected 'yes', got: " .. tostring(val))
-  lush.setenv("_LUSH_LIB_TEST", nil)
+  lush.envset("_LUSH_LIB_TEST", nil)
 end
 
 
@@ -247,30 +247,32 @@ do
   assert(r.code == 127, "removed command should not be found")
 end
 
--- user command via lush.command()
+-- user command via lush.capture()
 do
   lush.commands.apicmd = function(name, ...)
     print("api " .. table.concat({...}, " "))
   end
-  local r = lush.command("apicmd x y")
+  local r = lush.capture("apicmd x y")
   assert(r.stdout == "api x y\n",
          "expected 'api x y\\n', got: " .. r.stdout)
   lush.commands.apicmd = nil
 end
 
 
--- === lush.subcmd() direct call ===
+-- === lush.run() direct call ===
 
 do
-  local result = lush.subcmd("echo hello")
-  assert(result == "hello", "subcmd should return stdout without trailing newline, got: " .. tostring(result))
+  local result = lush.run("echo hello")
+  assert(result == "hello", "run should return stdout without trailing newline, got: " .. tostring(result))
 end
 
 
 -- === lush.interactive() direct call ===
 
 do
-  lush.interactive("true")
+  local r = lush.interactive("true")
+  assert(type(r) == "table")
+  assert(r.code == 0)
   assert(type(_) == "table")
   assert(_.code == 0)
 end