P: key conflict -> ctrl+alt+a is a polish letter

Thanks for reporting. The localization team is looking into it.

Excellent, thanks for testing this and providing another solid + easy fix to this long standing problem.

Adobe, can you please copy John's solution and make it part of LR5.4/LR6?

Dawid wrote, "this would probably disable the ctrl+a keyboard shortcut to 'select all'".

I just tested this with the following line, and CTRL+A for Select All continued to work as expected:

"$$$/AgLibrary/Menu/File/Edit/SelectFlaggedPhotos/Key=Cmd+Option+x"

John, thanks for sharing this! Looked into this route, but this would probably disable the ctrl+a keyboard shortcut to "select all", which is not what I'd want.

The AutoHotKey solution has been working flawlessly for the past few days on my end, but as usual with such workarounds, YMMV with past/future versions of Lightroom...

You could also edit the TranslatedStrings.txt file for your language and change the following line to use another keyboard shortcut:

"$$$/AgLibrary/Menu/File/Edit/SelectFlaggedPhotos/Key=Cmd+Option+a"

In Windows, the language files are locatedunder c:\program files\adobe\adobe photoshop lightroom 5.3\resources.

There is also the Keyboard Tamer plugin, but some people have reported problems using it in recent LR versions. I don't know its status.

This is seriously annoying, especially with metadata fields (title, caption, keywords, etc.). LR5 on Windows 7. The good news is that this can be overcome with a simple AutoHotKey script:

#IfWinActive ahk_class AgWinMainFrame
!a::SendInput {U+0105}
+!a::SendInput {U+0104}

All it does is capture AltGr+a and AltGr+Shift+a and send the respective Unicode characters in place of the original keystrokes. To retain compatibility with other programs, it only does that if Lightroom is the active window.

Adjust for other conflicting shortcuts accordingly.