docs: update

docs: Fix a typo in README

README

@@ -32,13 +32,24 @@ g - go to top
 G - go to bottom
 q - quit
 : - cd to <input>
-/ - search current directory *<input>*
+/ - search current directory <input>*
 - - go to last directory
 ~ - go home
 ! - spawn shell
 . - toggle hidden files
 ? - show help
 
+Also supported:
+
+down arrow  - down
+up arrow    - up
+left arrow  - go up level
+right arrow - open file or directory
+
+backspace   - up
+enter       - open file or directory
+
+
 todo
 ________________________________________________________________________________
 
@@ -65,7 +76,7 @@ rather flexible.
     # store pwd in var on exit
     var=$(shfm)
 
-    # store pwd in a file one exit
+    # store pwd in a file on exit
     shfm > file
 
 For ease of use, a wrapper function can be added to your .shellrc (.bashrc, etc).
@@ -164,9 +175,9 @@ ________________________________________________________________________________
 * VT100/ANSI escape sequences (widely available) are used in place of tput. A
   few non-VT100 sequences /are/ needed however.
 
-  - IL      vt102  \033[L:         controls upwards scroll.    (required)
-  - ?       xterm  \033[?1049[lh]: controls alternate screen.  (optional)
-  - DECTCEM vt520  \033[?25[lh]:   controls cursor visibility. (optional)
+  - IL      vt102  \033[L:         upwards scroll.    (required)
+  -         xterm  \033[?1049[lh]: alternate screen.  (optional)
+  - DECTCEM vt520  \033[?25[lh]:   cursor visibility. (optional)
 
   Why avoid tput?
 
@@ -244,15 +255,6 @@ ________________________________________________________________________________
   - If input doesn't follow this sequence, 'esc' is reset to '0'.
 
 
-* There is no usage of '[' or 'test'.
-
-  Despite these being commonly provided as "shell builtins" (part of the shell),
-  a lot of shells still use the external utilities from the coreutils. All usage
-  of these has been replaced with 'case' as it is always a "shell keyword".
-
-  This is one of the approaches taken to reduce the need for anything external.
-
-
 * Filename escaping works via looping over a string char by char.
 
   I didn't think this was possible in POSIX shell until I needed to do this in

shfm

@@ -24,6 +24,7 @@ esc() {
 term_setup() {
     stty=$(stty -g)
     stty -icanon -echo
+    esc screen_alt h
     esc DECAWM l
     esc DECTCEM l
     esc ED2
@@ -31,10 +32,11 @@ term_setup() {
 }
 
 term_reset() {
-    esc DECAWM h  >&2
-    esc DECTCEM h >&2
-    esc ED2       >&2
-    esc DECSTBM   >&2
+    esc DECAWM h     >&2
+    esc DECTCEM h    >&2
+    esc ED2          >&2
+    esc DECSTBM      >&2
+    esc screen_alt l >&2
     stty "$stty"
 
     # needed for cd-on-exit
@@ -88,14 +90,15 @@ term_scroll_up() {
 }
 
 cmd_run() {
-    esc screen_alt h
+    stty "$stty"
     esc DECTCEM h
     esc DECSTBM
+    esc ED2
     "$@" ||:
     esc DECSTBM 1 "$((LINES - 2))"
-    esc screen_alt l
     esc DECTCEM l
-    esc CUP "$y2"
+    stty -icanon -echo
+    hist=2
 }
 
 file_escape() {
@@ -133,13 +136,22 @@ list_print() {
     end=$((bottom + 1))
     mid=$((bottom / 4 < 5 ? 1 : bottom / 4))
 
+    case $1$# in
+        '*1')      set -- empty ;;
+        '.[!.]*1') set -- 'no hidden files'
+    esac
+
     case $hist in
-        1)
+        2) # redraw after cmd run
+            shift "$((y > y2 ? y - y2 : 0))"
+        ;;
+
+        1) # redraw after go-to-parent
             hist_search "$@"
             shift "$((y >= bottom ? y - mid : 0))"
         ;;
 
-        *)
+        *) # everything else
             shift "$((y >= bottom ? y - bottom : 0))"
         ;;
     esac
@@ -159,7 +171,7 @@ list_print() {
         i=$((i + 1))
     done
 
-    esc CUP "$((y > bottom ? y2 : y))"
+    esc CUP "$((y > y2 ? y2 : y))"
 }
 
 redraw() {
@@ -226,6 +238,7 @@ line_print() {
 line_format() {
     file_escape "$1"
     esc EL0
+    [ -d "$1" ] && esc SGR 1 31
     printf %s "$safe"
     [ -d "$1" ] && printf /
     esc SGR
@@ -242,7 +255,7 @@ main() {
         ;;
 
         -v|--version)
-            printf 'shfm 0.4.1\n'
+            printf 'shfm 0.4.2\n'
             exit 0
         ;;
 
@@ -277,13 +290,14 @@ main() {
             ;;
 
             l?|C2|"$esc") # ARROW RIGHT
-                if [ -d "$cur" ] && cd "$cur" >/dev/null 2>&1; then
+                if [ -d "$cur" ] && cd -- "$cur" >/dev/null 2>&1; then
                     set -- *
                     y=1 y2=1 cur=$1 ltype=
                     redraw "$@"
 
                 elif [ -e "$cur" ]; then
                     cmd_run "${SHFM_OPENER:="${EDITOR:=vi}"}" "$cur"
+                    redraw "$@"
                 fi
             ;;
 
@@ -335,7 +349,7 @@ main() {
                     '~/'*) ans=$HOME/${ans#"~/"}
                 esac
 
-                cd "${ans:="$0"}" >/dev/null 2>&1|| continue
+                cd -- "${ans:="$0"}" >/dev/null 2>&1|| continue
                 set -- *
                 y=1 y2=1 cur=$1
                 redraw "$@"
@@ -343,14 +357,22 @@ main() {
 
             /?)
                 prompt / r
-                set -- "$ans"*
+
+                # word splitting and globbing intentional
+                # shellcheck disable=2086
+                set -- $ans*
+
+                case $1$# in
+                    "$ans*1") set -- 'no results'
+                esac
+
                 y=1 y2=1 cur=$1 ltype="search $PWD/$ans*"
                 redraw "$@"
                 status_line "$#"
             ;;
 
             -?)
-                cd "$OLDPWD" >/dev/null 2>&1|| continue
+                cd -- "$OLDPWD" >/dev/null 2>&1|| continue
                 set -- *
                 y=1 y2=1 cur=$1
                 redraw "$@"
@@ -367,6 +389,7 @@ main() {
                 export SHFM_LEVEL
                 SHFM_LEVEL=$((SHFM_LEVEL + 1))
                 cmd_run "${SHELL:=/bin/sh}"
+                redraw "$@"
             ;;
 
             \??)