From 162f108b44470d34d2dec149b295c6d2a8356d6d Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Wed, 29 Mar 2017 10:50:26 +1300
Subject: Add gt() (go to)

---
 README.markdown |  3 ++-
 sh/shrc.d/gt.sh | 28 ++++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 sh/shrc.d/gt.sh

diff --git a/README.markdown b/README.markdown
index 8b95e1a9..874e0fc2 100644
--- a/README.markdown
+++ b/README.markdown
@@ -180,10 +180,11 @@ in `sh/shrc.d` to be loaded by any POSIX interactive shell. Those include:
     *   `gd()` goes to the marked directory.
     *   `pmd()` prints the marked directory.
     *   `xd()` swaps the current and marked directories.
-*   Nine other directory management and navigation functions:
+*   Ten other directory management and navigation functions:
     *   `ad()` is a `cd` shortcut accepting targets like `/u/l/b` for
         `/usr/local/bin`, as long as they are unique.
     *   `bd()` changes into a named ancestor of the current directory.
+    *   `gt()` changes into a directory or into a file's directory.
     *   `mkcd()` creates a directory and changes into it.
     *   `pd()` changes to the argument's parent directory.
     *   `rd()` replaces the first instance of its first argument with its
diff --git a/sh/shrc.d/gt.sh b/sh/shrc.d/gt.sh
new file mode 100644
index 00000000..d18a4ab8
--- /dev/null
+++ b/sh/shrc.d/gt.sh
@@ -0,0 +1,28 @@
+# If the argument is a directory, change to it. If it's a file, change to its
+# parent. Stands for "get to".
+gt() {
+
+    # Check argument count
+    if [ "$#" -gt 1 ] ; then
+        printf >&2 'gd(): Too many arguments\n'
+        return 2
+    fi
+
+    # Strip trailing slash
+    set -- "${1%/}"
+
+    # If target doesn't have a leading slash, add PWD prefix
+    case $1 in
+        /*) ;;
+        *) set -- "${PWD%/}"/"$1"
+    esac
+
+    # If target isn't a directory, chop to its parent
+    [ -d "$1" ] || set -- "${1%/*}"
+
+    # If target is now empty, go to the root
+    [ -n "$1" ] || set -- /
+
+    # Try to change into the determined directory
+    command cd -- "$@"
+}
-- 
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