From cbad3d16fb358fb6042a0e91a21b15eeb90bb95c Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Wed, 31 Aug 2016 17:49:42 +1200
Subject: Add very basic Yash support

I know almost nothing about Yash yet, but reading the manual page on its
startup behaviour implies a little coaxing is necessary to make it play
nicely with my file layout.
---
 Makefile          | 16 +++++++++++++++-
 README.markdown   |  2 ++
 check/yash        |  6 ++++++
 lint/yash         |  2 ++
 yash/yash_profile |  2 ++
 yash/yashrc       |  3 +++
 6 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100755 check/yash
 create mode 100755 lint/yash
 create mode 100644 yash/yash_profile
 create mode 100644 yash/yashrc

diff --git a/Makefile b/Makefile
index a311ee1d..b06a8344 100644
--- a/Makefile
+++ b/Makefile
@@ -40,6 +40,7 @@
 	install-vim-pathogen \
 	install-wyrd \
 	install-x \
+	install-yash \
 	install-zsh \
 	check \
 	check-bash \
@@ -48,11 +49,13 @@
 	check-pdksh \
 	check-sh \
 	check-urxvt \
+	check-yash \
 	lint \
 	lint-bash \
 	lint-bin \
 	lint-games \
 	lint-pdksh \
+	lint-yash \
 	lint-sh \
 	lint-urxvt
 
@@ -348,6 +351,10 @@ install-x :
 	install -pm 0644 -- X/Xresources "$(HOME)"/.Xresources
 	install -pm 0644 -- X/Xresources.d/* "$(HOME)"/.Xresources.d
 
+install-yash : check-yash install-sh
+	install -pm 0644 -- yash/yashrc "$(HOME)"/.yashrc
+	install -pm 0644 -- yash/yash_profile "$(HOME)"/.yash_profile
+
 install-zsh : install-sh
 	install -pm 0644 -- zsh/zprofile "$(HOME)"/.zprofile
 	install -pm 0644 -- zsh/zshrc "$(HOME)"/.zshrc
@@ -380,13 +387,17 @@ check-sh :
 check-urxvt :
 	check/urxvt
 
+check-yash :
+	check/yash
+
 lint : check \
 	lint-bash  \
 	lint-bin  \
 	lint-games  \
 	lint-pdksh  \
 	lint-sh  \
-	lint-urxvt
+	lint-urxvt \
+	lint-yash
 
 lint-bash :
 	lint/bash
@@ -405,3 +416,6 @@ lint-sh :
 
 lint-urxvt :
 	lint/urxvt
+
+lint-yash :
+	lint/yash
diff --git a/README.markdown b/README.markdown
index 99883c97..9e17fc8d 100644
--- a/README.markdown
+++ b/README.markdown
@@ -79,6 +79,8 @@ Configuration is included for:
     frontend for [Remind](https://www.roaringpenguin.com/products/remind)
 *   [X11](https://www.x.org/wiki/) -- Windowing system with network transparency
     for Unix
+*   [Yash](https://yash.osdn.jp/index.html.en) -- Yet another shell; just
+    enough configuration to make it read the portable POSIX stuff
 *   [Zsh](https://www.zsh.org/) -- Bourne-style shell designed for interactive
     use
 
diff --git a/check/yash b/check/yash
new file mode 100755
index 00000000..fb737596
--- /dev/null
+++ b/check/yash
@@ -0,0 +1,6 @@
+#!/bin/sh
+for yash in yash/* ; do
+    [ -f "$yash" ] || continue
+    yash -n "$yash" || exit
+done
+printf 'All yash scripts parsed successfully.\n'
diff --git a/lint/yash b/lint/yash
new file mode 100755
index 00000000..c2eacab3
--- /dev/null
+++ b/lint/yash
@@ -0,0 +1,2 @@
+#!/bin/sh
+find yash -type f -print -exec shellcheck -e SC1090 -s sh -- {} \;
diff --git a/yash/yash_profile b/yash/yash_profile
new file mode 100644
index 00000000..d37f35a1
--- /dev/null
+++ b/yash/yash_profile
@@ -0,0 +1,2 @@
+# Load ~/.profile, because Yash won't by itself, no matter how you invoke it
+[ -e "$HOME"/.profile ] && . "$HOME"/.profile
diff --git a/yash/yashrc b/yash/yashrc
new file mode 100644
index 00000000..eef82e54
--- /dev/null
+++ b/yash/yashrc
@@ -0,0 +1,3 @@
+# Load POSIX interactive shell startup files, because Yash won't do it if not
+# invoked as sh(1)
+[ -e "$ENV" ] && . "$ENV"
-- 
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