`a1fe1b5`

add set -o fuzzy-complete for opt-in fuzzy tab completion

Tab completion now uses prefix-only matching by default (like bash/zsh).
Fuzzy subsequence matching (where 'fort' matches 'install_intel_fortran')
is available via: set -o fuzzy-complete

Short patterns (≤3 chars) always require prefix match regardless of
the setting, to prevent noise like 'ls' matching 'false'.

Authored by

espadonne 1 month ago

SHA: a1fe1b5405f6085ac6e3480cf0c846b2652db3f7
Parents: d5ec6ce
Tree: 6080622

3 changed files

Status	File	+	-
M	`src/common/types.f90`	1	0
M	`src/io/readline.f90`	14	4
M	`src/scripting/shell_options.f90`	4	1

src/common/types.f90modified

      logical :: option_physical = .false.       ! set -o physical (resolve symlinks in cd)
      logical :: option_posix = .false.          ! set -o posix (POSIX mode)
      logical :: option_privileged = .false.     ! set -o privileged (restricted mode)
 +    logical :: option_fuzzy_complete = .false. ! set -o fuzzy-complete (fuzzy tab completion)
      integer :: original_stderr_fd = 2          ! Saved copy of original stderr for shell messages
      ! Bash-style shell options (shopt)
      logical :: shopt_nullglob = .false.        ! nullglob (empty glob matches)

src/io/readline.f90modified

    ! Module-level editing mode (set by shell via option_vi)
    integer, save :: global_editing_mode = EDITING_MODE_EMACS
 +  ! Fuzzy completion: off by default (prefix-only like bash/zsh)
 +  ! Enable with: set -o fuzzy-complete
 +  logical, save :: global_fuzzy_complete = .false.
++
    ! Detect macOS for potential platform-specific workarounds
    logical, save :: is_macos_system = .false.
    logical, save :: macos_detected = .false.
      end if
    end subroutine
 +  subroutine set_global_fuzzy_complete(enabled)
 +    logical, intent(in) :: enabled
 +    global_fuzzy_complete = enabled
 +  end subroutine
++
    ! Check if we're on macOS (called once at startup)
    subroutine detect_macos()
      character(len=256) :: sysname
        return
      end if
 -    ! For short patterns (1-3 chars), require prefix match for better UX
 -    ! This prevents "RE" from matching "parser_enhanced.mod"
 -    ! and "tes" from matching "ast_types.mod"
 -    if (pattern_len <= 3) then
 +    ! Require prefix match unless fuzzy-complete is enabled.
 +    ! With fuzzy off (default): behaves like bash/zsh — only prefix matches.
 +    ! With fuzzy on (set -o fuzzy-complete): short patterns still require
 +    ! prefix, longer patterns allow fuzzy subsequence matching.
 +    if (.not. global_fuzzy_complete .or. pattern_len <= 3) then
        is_prefix_match = .true.
        do i = 1, pattern_len
          if (to_lowercase(pattern(i:i)) /= to_lowercase(candidate(i:i))) then

src/scripting/shell_options.f90modified

    use shell_types
    use variables, only: set_shell_variable
    use system_interface, only: get_pid, get_ppid
 -  use readline, only: set_global_editing_mode
 +  use readline, only: set_global_editing_mode, set_global_fuzzy_complete
    use iso_fortran_env, only: output_unit, error_unit
    use io_helpers, only: write_stdout
    implicit none
                    shell%option_errtrace = enable_option
                  case ('functrace')
                    shell%option_functrace = enable_option
 +                case ('fuzzy-complete')
 +                  shell%option_fuzzy_complete = enable_option
 +                  call set_global_fuzzy_complete(enable_option)
                  case ('hashall')
                    shell%option_hashall = enable_option
                  case ('histexpand')