Document = and \0 use in args/environ docs. (WebAssembly#399)

phases/ephemeral/docs.md

@@ -1211,7 +1211,8 @@ When type is [`preopentype::dir`](#preopentype.dir):
 
 #### <a href="#get" name="get"></a> `get(argv: Pointer<Pointer<u8>>, argv_buf: Pointer<u8>) -> Result<(), errno>`
 Read command-line argument data.
-The size of the array should match that returned by [`sizes_get`](#sizes_get)
+The size of the array should match that returned by [`sizes_get`](#sizes_get).
+Each argument is expected to be `\0` terminated.
 
 ##### Params
 - <a href="#get.argv" name="get.argv"></a> `argv`: `Pointer<Pointer<u8>>`
@@ -1327,6 +1328,7 @@ The time value of the clock.
 #### <a href="#get" name="get"></a> `get(environ: Pointer<Pointer<u8>>, environ_buf: Pointer<u8>) -> Result<(), errno>`
 Read environment variable data.
 The sizes of the buffers should match that returned by [`sizes_get`](#sizes_get).
+Key/value pairs are expected to be joined with `=`s, and terminated with `\0`s.
 
 ##### Params
 - <a href="#get.environ" name="get.environ"></a> `environ`: `Pointer<Pointer<u8>>`

phases/ephemeral/witx/wasi_ephemeral_args.witx

@@ -10,7 +10,8 @@
   (import "memory" (memory))
 
   ;;; Read command-line argument data.
-  ;;; The size of the array should match that returned by `sizes_get`
+  ;;; The size of the array should match that returned by `sizes_get`.
+  ;;; Each argument is expected to be `\0` terminated.
   (@interface func (export "get")
     (param $argv (@witx pointer (@witx pointer (@witx char8))))
     (param $argv_buf (@witx pointer (@witx char8)))

phases/ephemeral/witx/wasi_ephemeral_environ.witx

@@ -11,6 +11,7 @@
 
   ;;; Read environment variable data.
   ;;; The sizes of the buffers should match that returned by `sizes_get`.
+  ;;; Key/value pairs are expected to be joined with `=`s, and terminated with `\0`s.
   (@interface func (export "get")
     (param $environ (@witx pointer (@witx pointer (@witx char8))))
     (param $environ_buf (@witx pointer (@witx char8)))

phases/old/snapshot_0/docs.md

@@ -1270,7 +1270,8 @@ Alignment: 4
 
 #### <a href="#args_get" name="args_get"></a> `args_get(argv: Pointer<Pointer<u8>>, argv_buf: Pointer<u8>) -> Result<(), errno>`
 Read command-line argument data.
-The size of the array should match that returned by [`args_sizes_get`](#args_sizes_get)
+The size of the array should match that returned by [`args_sizes_get`](#args_sizes_get).
+Each argument is expected to be `\0` terminated.
 
 ##### Params
 - <a href="#args_get.argv" name="args_get.argv"></a> `argv`: `Pointer<Pointer<u8>>`
@@ -1325,6 +1326,7 @@ Offset: 4
 #### <a href="#environ_get" name="environ_get"></a> `environ_get(environ: Pointer<Pointer<u8>>, environ_buf: Pointer<u8>) -> Result<(), errno>`
 Read environment variable data.
 The sizes of the buffers should match that returned by [`environ_sizes_get`](#environ_sizes_get).
+Key/value pairs are expected to be joined with `=`s, and terminated with `\0`s.
 
 ##### Params
 - <a href="#environ_get.environ" name="environ_get.environ"></a> `environ`: `Pointer<Pointer<u8>>`

phases/old/snapshot_0/witx/wasi_unstable.witx

@@ -16,7 +16,8 @@
   (import "memory" (memory))
 
   ;;; Read command-line argument data.
-  ;;; The size of the array should match that returned by `args_sizes_get`
+  ;;; The size of the array should match that returned by `args_sizes_get`.
+  ;;; Each argument is expected to be `\0` terminated.
   (@interface func (export "args_get")
     (param $argv (@witx pointer (@witx pointer u8)))
     (param $argv_buf (@witx pointer u8))
@@ -31,6 +32,7 @@
 
   ;;; Read environment variable data.
   ;;; The sizes of the buffers should match that returned by `environ_sizes_get`.
+  ;;; Key/value pairs are expected to be joined with `=`s, and terminated with `\0`s.
   (@interface func (export "environ_get")
     (param $environ (@witx pointer (@witx pointer u8)))
     (param $environ_buf (@witx pointer u8))

phases/snapshot/docs.md

@@ -1267,7 +1267,8 @@ Alignment: 4
 
 #### <a href="#args_get" name="args_get"></a> `args_get(argv: Pointer<Pointer<u8>>, argv_buf: Pointer<u8>) -> Result<(), errno>`
 Read command-line argument data.
-The size of the array should match that returned by [`args_sizes_get`](#args_sizes_get)
+The size of the array should match that returned by [`args_sizes_get`](#args_sizes_get).
+Each argument is expected to be `\0` terminated.
 
 ##### Params
 - <a href="#args_get.argv" name="args_get.argv"></a> `argv`: `Pointer<Pointer<u8>>`
@@ -1322,6 +1323,7 @@ Offset: 4
 #### <a href="#environ_get" name="environ_get"></a> `environ_get(environ: Pointer<Pointer<u8>>, environ_buf: Pointer<u8>) -> Result<(), errno>`
 Read environment variable data.
 The sizes of the buffers should match that returned by [`environ_sizes_get`](#environ_sizes_get).
+Key/value pairs are expected to be joined with `=`s, and terminated with `\0`s.
 
 ##### Params
 - <a href="#environ_get.environ" name="environ_get.environ"></a> `environ`: `Pointer<Pointer<u8>>`

phases/snapshot/witx/wasi_snapshot_preview1.witx

@@ -13,7 +13,8 @@
   (import "memory" (memory))
 
   ;;; Read command-line argument data.
-  ;;; The size of the array should match that returned by `args_sizes_get`
+  ;;; The size of the array should match that returned by `args_sizes_get`.
+  ;;; Each argument is expected to be `\0` terminated.
   (@interface func (export "args_get")
     (param $argv (@witx pointer (@witx pointer u8)))
     (param $argv_buf (@witx pointer u8))
@@ -28,6 +29,7 @@
 
   ;;; Read environment variable data.
   ;;; The sizes of the buffers should match that returned by `environ_sizes_get`.
+  ;;; Key/value pairs are expected to be joined with `=`s, and terminated with `\0`s.
   (@interface func (export "environ_get")
     (param $environ (@witx pointer (@witx pointer u8)))
     (param $environ_buf (@witx pointer u8))