(iswitchb-current-match-face, iswitchb-virtual-matches-face) (iswitchb-invalid-regexp-face): New faces. (iswitchb-completions): Use them. (iswitchb-use-faces): Renamed from iswitchb-use-fonts, which is now marked as an obsolete alias. (iswitchb-read-buffer): Remove check for bound font variables. (iswitchb-invalid-regexp): New free variable. (iswitchb-get-matched-buffers): Catch invalid-regexp errors and set iswitchb-invalid-regexp. (iswitchb, iswitchb-complete, iswitchb-completions): Deal with invalid regexps. (iswitchb-completions): Add check for complete match when entering a regexp. (iswitchb-completions): Remove require-match argument. (iswitchb-exhibit): Fix caller. (iswitchb-common-match-inserted): New variable. (iswitchb-complete, iswitchb-completion-help): Use it.
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