pkgs/lf-make-map: Special case dot-directories

That makes the mappings for `~/.config` or `~/.local` more accessible.

7 files changed, 145 insertions, 9 deletions

diff --git a/pkgs/by-name/lf/lf-make-map/src/mapping/map_key.rs b/pkgs/by-name/lf/lf-make-map/src/mapping/map_key.rs
index 5fd046fb..d90eb963 100644
--- a/pkgs/by-name/lf/lf-make-map/src/mapping/map_key.rs
+++ b/pkgs/by-name/lf/lf-make-map/src/mapping/map_key.rs
@@ -87,7 +87,6 @@ impl MapKey {
 
             generated_chars.extend(
                 (0..(new_resolution - self.part_path.len()))
-                    .into_iter()
                     .map(|_| self.part_path.chars().last().expect("This will exists")),
             );
 
@@ -110,14 +109,14 @@ impl MapKey {
     }
 
     pub fn display(values: &[Self]) -> String {
-        values.iter().map(|value| value.key.clone()).collect()
+        values.iter().map(|value| value.key).collect()
     }
 
     fn part_path_to_key(part: &str, number_of_chars: usize) -> String {
         fn make(pat: char, part: &str, number_of_chars: usize) -> String {
             let mut acc = String::new();
 
-            if !part.split(pat).all(|part| part.len() > 0) {
+            if !part.split(pat).all(|part| !part.is_empty()) {
                 panic!(
                     "\
 Can't turn this path '{}' to a mapping.
@@ -152,6 +151,13 @@ This should not happen, please report the bug!",
             make('_', part, number_of_chars)
         } else if part.contains('-') && !part.starts_with('-') && !part.ends_with('-') {
             make('-', part, number_of_chars)
+        } else if part.starts_with('.') {
+            // HACK: Special case for directories like ~/.config ~/.local and so on.
+            // We just drop the starting '.' and it's easier to type. <2026-06-02>
+            part.chars()
+                .skip(1)
+                .take(number_of_chars)
+                .collect::<String>()
         } else {
             part.chars().take(number_of_chars).collect::<String>()
         };
diff --git a/pkgs/by-name/lf/lf-make-map/tests/base.sh b/pkgs/by-name/lf/lf-make-map/tests/base.sh
index c7694985..d860cf84 100755
--- a/pkgs/by-name/lf/lf-make-map/tests/base.sh
+++ b/pkgs/by-name/lf/lf-make-map/tests/base.sh
@@ -18,7 +18,7 @@ execute_make_maps() {
 }
 
 fd . cases --max-depth 1 --type directory | while read -r case; do
-    echo "Executing '$case/test.sh'"
+    echo "Executing '${case}test.sh'"
 
     # shellcheck source=/dev/null
     LOCATION="$case/test.sh" . "$case/test.sh"
diff --git a/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs/output.old b/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs/output.old
new file mode 100644
index 00000000..49307bc6
--- /dev/null
+++ b/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs/output.old
@@ -0,0 +1,13 @@
+map gc. cd "/tmp/tmp.DfcgjemfCG/.config"
+map gca. cd "/tmp/tmp.DfcgjemfCG/.config/apzu"
+map gcl. cd "/tmp/tmp.DfcgjemfCG/.config/lahmu"
+map gct. cd "/tmp/tmp.DfcgjemfCG/.config/tiamat"
+map gd. cd "/tmp/tmp.DfcgjemfCG/documents"
+map gda. cd "/tmp/tmp.DfcgjemfCG/documents/apzu"
+map gdl. cd "/tmp/tmp.DfcgjemfCG/documents/lahmu"
+map gdt. cd "/tmp/tmp.DfcgjemfCG/documents/tiamat"
+map gl. cd "/tmp/tmp.DfcgjemfCG/.local"
+map gln. cd "/tmp/tmp.DfcgjemfCG/.local/nvim"
+map glsh. cd "/tmp/tmp.DfcgjemfCG/.local/share"
+map glst. cd "/tmp/tmp.DfcgjemfCG/.local/state"
+
diff --git a/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs/test.sh b/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs/test.sh
new file mode 100755
index 00000000..d3df848c
--- /dev/null
+++ b/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs/test.sh
@@ -0,0 +1,49 @@
+#! /usr/bin/env sh
+
+# nixos-config - My current NixOS configuration
+#
+# Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This file is part of my nixos-config.
+#
+# You should have received a copy of the License along with this program.
+# If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
+
+mkFile() {
+    t="$1"
+
+    mkdir --parents "$(dirname "$t")"
+    echo "TEST_FILE" >"$t"
+}
+
+# We need to hard code this, so that our output matches the golden sample.
+base="/tmp/tmp.DfcgjemfCG"
+test="$(mktemp --directory -t lf_make_temp_test_XXXXX)"
+
+if [ -d "$base" ]; then
+    rm --recursive "$base"
+fi
+mkdir "$base"
+
+cleanup() {
+    rm --recursive "$base" "$test"
+}
+trap cleanup EXIT
+
+mkFile "$base/.local/share/file1.txt"
+mkFile "$base/.local/state/file1.txt"
+mkFile "$base/.local/nvim/log.LOG"
+mkFile "$base/.local/.tog/TOG.LOG"
+
+mkFile "$base/.config/apzu/file2.txt"
+mkFile "$base/.config/tiamat/file2.txt"
+mkFile "$base/.config/lahmu/file2.txt"
+
+mkFile "$base/documents/apzu/file2.txt"
+mkFile "$base/documents/tiamat/file2.txt"
+mkFile "$base/documents/lahmu/file2.txt"
+
+execute_make_maps --home-name "$base" --depth 100 generate "$base/.local" "$base/.config" "$base/documents" >"$test/output.new"
+
+diff "$test/output.new" "$(dirname "$LOCATION")/output.old"
diff --git a/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs_duplicates/output.old b/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs_duplicates/output.old
new file mode 100644
index 00000000..f7523ba3
--- /dev/null
+++ b/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs_duplicates/output.old
@@ -0,0 +1,17 @@
+map gca. cd "/tmp/tmp.DfcgjemfCG/cats"
+map gcaa. cd "/tmp/tmp.DfcgjemfCG/cats/apzu"
+map gcal. cd "/tmp/tmp.DfcgjemfCG/cats/lahmu"
+map gcat. cd "/tmp/tmp.DfcgjemfCG/cats/tiamat"
+map gco. cd "/tmp/tmp.DfcgjemfCG/.config"
+map gcoa. cd "/tmp/tmp.DfcgjemfCG/.config/apzu"
+map gcol. cd "/tmp/tmp.DfcgjemfCG/.config/lahmu"
+map gcot. cd "/tmp/tmp.DfcgjemfCG/.config/tiamat"
+map gd. cd "/tmp/tmp.DfcgjemfCG/documents"
+map gda. cd "/tmp/tmp.DfcgjemfCG/documents/apzu"
+map gdl. cd "/tmp/tmp.DfcgjemfCG/documents/lahmu"
+map gdt. cd "/tmp/tmp.DfcgjemfCG/documents/tiamat"
+map gl. cd "/tmp/tmp.DfcgjemfCG/.local"
+map gln. cd "/tmp/tmp.DfcgjemfCG/.local/nvim"
+map glsh. cd "/tmp/tmp.DfcgjemfCG/.local/share"
+map glst. cd "/tmp/tmp.DfcgjemfCG/.local/state"
+
diff --git a/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs_duplicates/test.sh b/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs_duplicates/test.sh
new file mode 100755
index 00000000..33447e54
--- /dev/null
+++ b/pkgs/by-name/lf/lf-make-map/tests/cases/dot_dirs_duplicates/test.sh
@@ -0,0 +1,53 @@
+#! /usr/bin/env sh
+
+# nixos-config - My current NixOS configuration
+#
+# Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This file is part of my nixos-config.
+#
+# You should have received a copy of the License along with this program.
+# If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
+
+mkFile() {
+    t="$1"
+
+    mkdir --parents "$(dirname "$t")"
+    echo "TEST_FILE" >"$t"
+}
+
+# We need to hard code this, so that our output matches the golden sample.
+base="/tmp/tmp.DfcgjemfCG"
+test="$(mktemp --directory -t lf_make_temp_test_XXXXX)"
+
+if [ -d "$base" ]; then
+    rm --recursive "$base"
+fi
+mkdir "$base"
+
+cleanup() {
+    rm --recursive "$base" "$test"
+}
+trap cleanup EXIT
+
+mkFile "$base/.local/share/file1.txt"
+mkFile "$base/.local/state/file1.txt"
+mkFile "$base/.local/nvim/log.LOG"
+mkFile "$base/.local/.tog/TOG.LOG"
+
+mkFile "$base/.config/apzu/file2.txt"
+mkFile "$base/.config/tiamat/file2.txt"
+mkFile "$base/.config/lahmu/file2.txt"
+
+mkFile "$base/documents/apzu/file2.txt"
+mkFile "$base/documents/tiamat/file2.txt"
+mkFile "$base/documents/lahmu/file2.txt"
+
+mkFile "$base/cats/apzu/file2.txt"
+mkFile "$base/cats/tiamat/file2.txt"
+mkFile "$base/cats/lahmu/file2.txt"
+
+execute_make_maps --home-name "$base" --depth 100 generate "$base/.local" "$base/.config" "$base/documents" "$base/cats" >"$test/output.new"
+
+diff "$test/output.new" "$(dirname "$LOCATION")/output.old"
diff --git a/pkgs/by-name/lf/lf-make-map/tests/cases/simple/test.sh b/pkgs/by-name/lf/lf-make-map/tests/cases/simple/test.sh
index 22f97009..97ee0cb9 100755
--- a/pkgs/by-name/lf/lf-make-map/tests/cases/simple/test.sh
+++ b/pkgs/by-name/lf/lf-make-map/tests/cases/simple/test.sh
@@ -14,11 +14,9 @@
 base="/tmp/tmp.DfcgjemfCG"
 test="$(mktemp --directory -t lf_make_temp_test_XXXXX)"
 
-[ -d "$base" ] && {
-    echo "$base already exists!"
-    exit 1
-}
-
+if [ -d "$base" ]; then
+    rm --recursive "$base"
+fi
 mkdir "$base"
 
 cleanup() {