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https://github.com/fish-shell/fish-shell
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b53f42970c
This fixes several problems with how the builtin `history` command handles arguments. It now complains and refuses to do anything if the user specifies incompatible actions (e.g., `--search` and `--clear`). It also fixes a regression introduced by previous changes with regard to invocations that don't explicitly specify `--search` or a search term. Enhances the history man page to clarify the behavior of various options. This change is already far larger than I like so unit tests will be added in a separate commit. Fixes #3224. Note: This fixes only a couple problems with the interactive `history --delete` command in the `history` function. The main problem will be dealt with via issue #31.
125 lines
4.3 KiB
Fish
125 lines
4.3 KiB
Fish
#
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# Wrap the builtin history command to provide additional functionality.
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#
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function history --shadow-builtin --description "display or manipulate interactive command history"
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set -l cmd
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set -l search_mode --contains
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set -l with_time
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# The "set cmd $cmd xyz" lines are to make it easy to detect if the user specifies more than one
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# subcommand.
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while set -q argv[1]
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switch $argv[1]
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case -d --delete
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set cmd $cmd delete
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case -v --save
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set cmd $cmd save
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case -l --clear
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set cmd $cmd clear
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case -s --search
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set cmd $cmd search
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case -m --merge
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set cmd $cmd merge
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case -h --help
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set cmd $cmd help
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case -t --with-time
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set with_time -t
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case -p --prefix
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set search_mode --prefix
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case -c --contains
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set search_mode --contains
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case --
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set -e argv[1]
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break
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case '*'
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break
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end
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set -e argv[1]
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end
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if not set -q cmd[1]
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set cmd search # default to "search" if the user didn't explicitly specify a command
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else if set -q cmd[2]
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printf (_ "You cannot specify multiple commands: %s\n") "$cmd"
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return 1
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end
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switch $cmd
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case search
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if isatty stdout
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set -l pager less
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set -q PAGER
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and set pager $PAGER
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builtin history --search $search_mode $with_time -- $argv | eval $pager
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else
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builtin history --search $search_mode $with_time -- $argv
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end
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case delete # Interactively delete history
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# TODO: Fix this to deal with history entries that have multiple lines.
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if not set -q argv[1]
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printf "You have to specify at least one search term to find entries to delete" >&2
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return 1
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end
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# TODO: Fix this so that requesting history entries with a timestamp works:
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# set -l found_items (builtin history --search $search_mode $with_time -- $argv)
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set -l found_items (builtin history --search $search_mode -- $argv)
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if set -q found_items[1]
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set -l found_items_count (count $found_items)
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for i in (seq $found_items_count)
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printf "[%s] %s\n" $i $found_items[$i]
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end
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echo ""
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echo "Enter nothing to cancel the delete, or"
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echo "Enter one or more of the entry IDs separated by a space, or"
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echo "Enter \"all\" to delete all the matching entries."
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echo ""
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read --local --prompt "echo 'Delete which entries? > '" choice
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echo ''
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if test -z "$choice"
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printf "Cancelling the delete!\n"
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return
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end
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if test "$choice" = "all"
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printf "Deleting all matching entries!\n"
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builtin history --delete $search_mode -- $argv
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builtin history --save
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return
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end
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for i in (string split " " -- $choice)
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if test -z "$i"
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or not string match -qr '^[1-9][0-9]*$' -- $i
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or test $i -gt $found_items_count
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printf "Ignoring invalid history entry ID \"%s\"\n" $i
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continue
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end
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printf "Deleting history entry %s: \"%s\"\n" $i $found_items[$i]
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builtin history --delete "$found_items[$i]"
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end
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builtin history --save
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end
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case save
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builtin history --save -- $argv
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case merge
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builtin history --merge -- $argv
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case help
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builtin history --help
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case clear
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# Erase the entire history.
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read --local --prompt "echo 'Are you sure you want to clear history? (y/n) '" choice
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if test "$choice" = "y"
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or test "$choice" = "yes"
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builtin history --clear -- $argv
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and echo "History cleared!"
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end
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end
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end
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