correct copyright and add small shell

bin/yait

@@ -5,15 +5,15 @@ scriptversion="1"
 
 #
 # 
-# Copyright (C) 2025-2026 vx-clutch
+# Copyright (C) 2025-2026 fSD
 # THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-me=$0
+me=$(basename "$0")
-version="$me v$scriptversion
+version="$me\/fSD v$scriptversion
 
 Copyright (C) 2025-2026 fSD.
 This is free software; you are free to change and redistribute it.
@@ -28,34 +28,121 @@ Options:
    --version      output version information
 
    -x <language>    set project type
+   -d <description> set a description
    -S               small project creation
    -f               overwrite existing files
    -a <author>      set project author
    -r               initialize Git repository for the project
    -q               surpress output"
 
-x=C                        # language
+x=c                        # language
+d="Does a thing"           # package description
 S=                         # small project creation (bool)
 f=                         # force (bool)
 a=$(git config user.name)  # author
 r=                         # initialize repository (bool)
 q=                         # surpress output
 
-format() {
+say() {
     if [ -z "$q" ]; then
         echo "$me: $*"
     fi
 }
 
+lsay() {
+    if [ -z "$q" ]; then
+        echo " => $*"
+    fi
+}
+
 create_project() {
 	name=$1
 	
 	if ! echo "$name" | grep -qE '^[A-Za-z0-9_-]+$'; then
-		format "invalid name '$name'"
+		say "invalid name '$name'"
 		exit 1
 	fi
 
-	echo "invoke"
+	shell() {
+		if [ -z "$S" ]; then
+			mkdir "$name" || return
+			cd "$name" || return
+
+			touch COPYING Makefile README.md "$name.1" .gitignore
+			mkdir bin
+		else
+			cat <<EOF > "$name"
+#! /bin/sh
+# $d
+
+scriptversion="1"
+
+#
+# 
+# Copyright (C) $(date "+%Y") $a
+# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+me=\$0
+version="\$me/$a v\$scriptversion
+
+Copyright (C) $(date "+%Y") $a.
+This is free software; you are free to change and redistribute it.
+There is NO WARRANTY, to the extent permitted by law."
+
+usage="\
+Usage: \$me [OPTION]... <arg1> <arg2>
+$d
+
+Options:
+   --help         print this help and exit
+   --version      output version information"
+
+say() {
+    if [ -z "\$q" ]; then
+        echo "\$me: \$*"
+    fi
+}
+
+lsay() {
+    if [ -z "\$q" ]; then
+        echo " => \$*"
+    fi
+}
+
+if ! [ \$# -gt 0 ]; then
+	echo "\$usage"
+	exit 0
+fi
+
+while [ \$# -gt 0 ]; do
+  case \$1 in
+    --help) echo "\$usage"; exit 0 ;;
+    --version) echo "\$version"; exit 0 ;;
+    -*) echo "\$me: Unknown option '\$1'." >&2; exit 1 ;;
+  esac
+done
+
+say hello world
+EOF
+		chmod +x "$name"
+		fi
+	}
+
+	c() {
+		lsay "sub routine: c"
+	}
+
+	case $x in
+		sh) say "using shell"; shell ;;
+		c) say "using C"; c ;;
+		*) say "defaulting to C"; c ;;
+	esac
+
+	say "made $name at $(realpath "$name")"
 }
 
 if ! [ $# -gt 0 ]; then
@@ -67,13 +154,14 @@ while [ $# -gt 0 ]; do
   case $1 in
     --help) echo "$usage"; exit 0 ;;
     --version) echo "$version"; exit 0 ;;
-    -x) shift; x=$1; break ;;
+    -x) shift; x="$1"; shift ;;
-    -S) S=true; break ;;
+    -d) shift; d="$1"; shift ;;
-    -f) f=true; break ;;
+    -S) S=true; shift ;;
-    -a) shift; a=$1; break ;;
+    -f) f=true; shift ;;
-    -r) r=true; break ;;
+    -a) shift; a="$1"; shift ;;
-    -q) q=true; break ;;
+    -r) r=true; shift ;;
+    -q) q=true; shift ;;
     -*) echo "$me: Unknown option '$1'." >&2; exit 1 ;;
-    *) create_project $1; shift ;;
+    *) create_project "$1"; shift ;;
   esac
 done