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Posted to dev@hive.apache.org by "Martin Meyer (JIRA)" <ji...@apache.org> on 2013/01/22 22:50:20 UTC
[jira] [Commented] (HIVE-120) Add readline support/support for
alt-based commands in the CLI
[ https://issues.apache.org/jira/browse/HIVE-120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13560069#comment-13560069 ]
Martin Meyer commented on HIVE-120:
-----------------------------------
FYI, there's a JNI wrap of readline available for Java: http://sourceforge.net/projects/java-readline/ . I imagine that will be helpful in implementing readline support, which I would dearly love to have. It's pretty annoying when pressing ctrl+left inserts ";5D " instead of moving one word left on my line. It's packaged for at least Debian stable already, which means probably available almost everywhere.
> Add readline support/support for alt-based commands in the CLI
> --------------------------------------------------------------
>
> Key: HIVE-120
> URL: https://issues.apache.org/jira/browse/HIVE-120
> Project: Hive
> Issue Type: New Feature
> Components: Clients
> Environment: OS X/Terminal, but should affect anyone running bash
> Reporter: Thomas Lento
>
> When I use bash, I can typically navigate using option (alt) based command sequences. For example, option-f skips forward a word. Option-b skips back. option-d deletes the next word. option-backspace deletes the previous word.
> The Hive2 CLI only recognizes ctrl-based shortcuts. This makes the CLI much more difficult to use (at least for me, since it looks like a bash terminal and every other program I use in bash recognizes these alt-based commands). I find it useful to drop in there for a quick scripting session, but if I make a typo I have to go character by character from either the beginning (ctrl-a) or end (ctrl-e) of the line. Tedious.
> If you could support alt-based commands I'd really appreciate it. If that's not possible, I'll have to stick with -e or -f, which is rather annoying for other reasons.
> Similarly, ctrl+k kills to the end of the line, as expected. Unfortunately, ctrl+y does not yank the killed text back. Please add support for yanking killed text.
> According to Venky, adding Readline support should solve this issue.
> http://web.mit.edu/gnu/doc/html/rlman_1.html
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