new port: ble.sh, recommended dependency of atuin

sysutils/ble.sh/Portfile

@@ -0,0 +1,45 @@
+# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4
+
+PortSystem          1.0
+PortGroup           github 1.0
+
+github.setup        akinomyoga ble.sh 0.4.0-devel3 v
+fetch.type          git
+
+description         Bash Line Editor (${name}) is a command line editor written in pure Bash which replaces the default GNU Readline.
+long_description    ${description}
+license             BSD
+
+platforms           any
+maintainers         {cal @neverpanic} openmaintainer
+categories          sysutils shells
+
+post-fetch {
+    system -W ${worksrcpath} "git submodule update --init --recursive"
+}
+
+depends_build-append \
+                    port:gawk
+
+use_configure       no
+
+build.type          gnu
+use_parallel_build  no
+
+post-destroot {
+    xinstall -m 644 \
+        ${filespath}/_package.bash.in \
+        ${destroot}${prefix}/share/blesh/lib/_package.bash
+    reinplace \
+        "s|@sudo@|[expr {${sudo_user} != "" ? "sudo" : ""}]|g; s|@prefix@|$prefix|g" \
+        ${destroot}${prefix}/share/blesh/lib/_package.bash
+}
+
+destroot.args-append \
+                    PREFIX=${prefix}
+
+notes "\
+To enable ${name} in interactive sessions of bash, add the following line at the top of your ~/.bashrc:\n\
+    \t\[\[ $- == *i* ]] && source -- ${prefix}/share/blesh/ble.sh --attach=none\n\
+and the following line at the end of your ~/.bashrc:\n\
+    \t\[\[ ! \${BLE_VERSION-} ]] || ble-attach"

sysutils/ble.sh/files/_package.bash.in

@@ -0,0 +1,5 @@
+_ble_base_package_type=macports
+
+function ble/base/package:macports/update {
+	@sudo@ @prefix@/bin/port upgrade ble.sh && return 6
+}