Add try_patch shell function and update glue for latest nightlies

build-src.sh

@@ -17,7 +17,7 @@ prompt_changes() {
 	GIT_DIR="$MAIN_GIT_DIR" git_commits_ordered '%H %cd' $(get_patch_commits) $IO_COMMIT | \
 	grep --color=always -1 $IO_COMMIT | sed /$IO_COMMIT/'s/$/ <=== your commit/'
 	echo
-	bold_arrow; echo -e "Try applying one of those using: \e[1;36mpatch -p1 < ../../patches/COMMIT.patch\e[0m"
+	bold_arrow; echo -e "Try applying one of those using: \e[1;36mtry_patch COMMIT\e[0m"
 	bold_arrow; echo -e "Remember to test your changes with: \e[1;36mcargo build\e[0m"
 	bold_arrow; echo -e "Make your changes now (\e[1;36mctrl-D\e[0m when finished)"
 	bash_diff_loop "No changes were made"

build.rs

@@ -36,17 +36,25 @@ impl Sub<Mapping> for Vec<Mapping> {
 }
 
 fn main() {
+	let ver=rustc_version::version_meta();
+
 	let io_commit=match env::var("CORE_IO_COMMIT") {
 		Ok(c) => c,
 		Err(env::VarError::NotUnicode(_)) => panic!("Invalid commit specified in CORE_IO_COMMIT"),
 		Err(env::VarError::NotPresent) => {
 			let mappings=include!("mapping.rs");
 			
-			let compiler=rustc_version::version_meta().commit_hash.expect("Couldn't determine compiler version");
+			let compiler=ver.commit_hash.expect("Couldn't determine compiler version");
 			mappings.iter().find(|&&Mapping(elem,_)|elem==compiler).expect("Unknown compiler version, upgrade core_io?").1.to_owned()
 		}
 	};
 	
+	if ver.commit_date.as_ref().map_or(false,|d| &**d<"2016-12-15") {
+		println!("cargo:rustc-cfg=rustc_unicode");
+	} else if ver.commit_date.as_ref().map_or(false,|d| &**d<"2017-03-03") {
+		println!("cargo:rustc-cfg=std_unicode");
+	}
+
 	let mut dest_path=PathBuf::from(env::var_os("OUT_DIR").unwrap());
 	dest_path.push("io.rs");
 	let mut f=File::create(&dest_path).unwrap();

functions.sh

@@ -41,7 +41,9 @@ get_patch_commits() {
 prepare_version() {
 	mkdir src/$IO_COMMIT
 	git_extract src/libstd/io/
-	if git_file_exists src/libstd/sys/common/memchr.rs; then
+	if git_file_exists src/libstd/sys_common/memchr.rs; then
+		git_extract src/libstd/sys_common/memchr.rs
+	elif git_file_exists src/libstd/sys/common/memchr.rs; then
 		git_extract src/libstd/sys/common/memchr.rs
 	else
 		git_extract src/libstd/memchr.rs
@@ -53,8 +55,18 @@ bold_arrow() {
 	echo -ne '\e[1;36m==> \e[0m'
 }
 
+custom_bashrc() {
+	echo '
+if [ -f ~/.bashrc ]; then . ~/.bashrc; fi
+
+try_patch() {
+	patch -p1 < ../../patches/$1.patch
+}
+'
+}
+
 bash_diff_loop() {
-	bash <> /dev/stderr
+	bash --rcfile <(custom_bashrc) <> /dev/stderr
 	while git diff --exit-code > /dev/null; do
 		bold_arrow; echo "$1"
 		while true; do

src/lib.rs

@@ -3,13 +3,16 @@
 //! the [std documentation](https://doc.rust-lang.org/nightly/std/io/index.html)
 //! for a full description of the functionality.
 #![allow(stable_features,unused_features)]
-#![feature(question_mark,const_fn,collections,alloc,unicode,copy_from_slice,str_char,try_from)]
+#![feature(question_mark,const_fn,collections,alloc,unicode,copy_from_slice,str_char,try_from,str_internals)]
 #![no_std]
 
 #[cfg_attr(feature="collections",macro_use)]
 #[cfg(feature="collections")] extern crate collections;
 #[cfg(feature="alloc")] extern crate alloc;
+#[cfg(rustc_unicode)]
 extern crate rustc_unicode;
+#[cfg(std_unicode)]
+extern crate std_unicode;
 
 #[cfg(not(feature="collections"))]
 pub type ErrorString = &'static str;