From 1bca0a6205c0c22bc0e23c642f47da18d5164766 Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Fri, 26 May 2017 20:46:48 +1200
Subject: Remove ad()

It has no real advantages over and isn't as clever as just cd /a*/b*/c*
---
 IDEAS.markdown                 |  3 --
 README.markdown                |  2 --
 bash/bash_completion.d/ad.bash |  2 --
 sh/shrc.d/ad.sh                | 80 ------------------------------------------
 4 files changed, 87 deletions(-)
 delete mode 100644 bash/bash_completion.d/ad.bash
 delete mode 100644 sh/shrc.d/ad.sh

diff --git a/IDEAS.markdown b/IDEAS.markdown
index 083df51b..4cac76f7 100644
--- a/IDEAS.markdown
+++ b/IDEAS.markdown
@@ -8,8 +8,5 @@ Ideas
 *   Have eds(1df) accept stdin with the "starting content" for the script
 *   Convert all the manual pages to mandoc maybe? <https://en.wikipedia.org/wiki/Mandoc>
 *   qmp(1df)--quick man page
-*   ad() could be more intelligent; if there's only one directory that matches
-    the *whole pattern*, we can assume it's safe to use that one, rather than
-    stopping each time any node has more than one match
 *   The solution to chn(1df) not running in parallel is probably backgrounded
     processes and mkfifo(1).
diff --git a/README.markdown b/README.markdown
index 4cd8ebd0..9d16abe5 100644
--- a/README.markdown
+++ b/README.markdown
@@ -189,8 +189,6 @@ in `sh/shrc.d` to be loaded by any POSIX interactive shell. Those include:
     *   `pmd()` prints the marked directory.
     *   `xd()` swaps the current and marked directories.
 *   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.
     *   `lgt()` runs `gt()` on the first result from a `loc(1df)` search.
diff --git a/bash/bash_completion.d/ad.bash b/bash/bash_completion.d/ad.bash
deleted file mode 100644
index 390fcb00..00000000
--- a/bash/bash_completion.d/ad.bash
+++ /dev/null
@@ -1,2 +0,0 @@
-# Completion function for ad(); just directories
-complete -A directory ad
diff --git a/sh/shrc.d/ad.sh b/sh/shrc.d/ad.sh
deleted file mode 100644
index 55866683..00000000
--- a/sh/shrc.d/ad.sh
+++ /dev/null
@@ -1,80 +0,0 @@
-# Find an abbreviated path
-ad() {
-
-    # Check argument count
-    if [ "$#" -ne 1 ] ; then
-        printf >&2 'ad(): Need just one argument\n'
-        return 2
-    fi
-
-    # Change the positional parameters from the abbreviated request
-    # to any matched directory
-    set -- "$(
-
-        # Clean up and anchor the request
-        req=${1%/}/
-        case $req in
-            (/*) ;;
-            (*) req=${PWD%/}/${req#/} ;;
-        esac
-
-        # Start building the target directory; go through the request piece by
-        # piece until it is used up
-        dir=
-        while [ -n "$req" ] ; do
-
-            # Chop the next front bit off the request and add it to the dir
-            dir=${dir%/}/${req%%/*}
-            req=${req#*/}
-
-            # If that exists, all is well and we can keep iterating
-            [ -d "$dir" ] && continue
-
-            # Set the positional parameters to a glob expansion of the
-            # abbreviated directory given
-            set -- "$dir"*
-
-            # Iterate through the positional parameters filtering out
-            # directories; we need to run right through the whole list to check
-            # that we have at most one match
-            entd=
-            for ent ; do
-                [ -d "$ent" ] || continue
-
-                # If we already found a match and have found another one, bail
-                # out
-                if [ -n "$entd" ] ; then
-                    printf >&2 'ad(): More than one matching dir for %s*:\n' \
-                        "$dir"
-                    printf >&2 '%s\n' "$@"
-                    exit 1
-                fi
-
-                # Otherwise, this can be our first one
-                entd=$ent
-            done
-
-            # If we found no match, bail out
-            if [ -z "$entd" ] ; then
-                printf >&2 'ad(): No matching dirs: %s*\n' "$dir"
-                exit 1
-            fi
-
-            # All is well, tack on what we have found and keep going
-            dir=$entd
-
-        done
-
-        # Print the target with trailing slash to work around newline stripping
-        printf '%s/' "${dir%/}"
-    )"
-
-    # Remove trailing slash
-    set -- "${1%/}"
-
-    # If the subshell printed nothing, return with failure
-    [ -n "$1" ] || return
-
-    # Try to change into the determined directory
-    command cd -- "$@"
-}
-- 
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