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How to load program reading stdin and taking parameters in gdb?
If you were doing it from a shell you’d do it like this: % gdb myprogram gdb> run params … < input.txt This seems to work within emacs too.
Using Emacs to recursively find and replace in text files not already open
M-x find-name-dired: you will be prompted for a root directory and a filename pattern. Press t to “toggle mark” for all files found. Press Q for “Query-Replace in Files…”: you will be prompted for query/substitution regexps. Proceed as with query-replace-regexp: SPACE to replace and move to next match, n to skip a match, etc. Press … Read more
automatically disable a global minor mode for a specific major mode
Global minor modes created with the define-globalized-minor-mode1 macro are a bit tricky. The reason your code doesn’t appear to do anything is that globalized modes utilise after-change-major-mode-hook to activate the buffer-local minor mode that they control; and that hook runs immediately after the major mode’s own hooks4. Individual modes may implement custom ways of specifying … Read more
What to do if I cannot find my emacs init file?
C-x C-f ~/.emacs will take you to it. See the Emacs manual, nodes Init File and Find Init.
Using tramp with EmacsW32 and cygwin, possible?
Take note of the cygwin-related information on the emacs wiki: http://www.emacswiki.org/emacs/TrampMode I don’t use EmacsW32, but I do successfully use TRAMP over ssh with Cygwin and NT Emacs. I never got TRAMP working without an ssh agent (i.e. prompting for credentials) — as you noticed, it just hangs — but it works fine with one, … Read more
How can I more easily switch between buffers in Emacs?
UPDATE: iswitchb-mode is obsolete in Emacs >= 24.4, replaced by ido. All of the features of iswitchdb are now provided by ido. Ross provided a link to the documentation in his answer. You can activate with the following in your .emacs (or use the customization interface as Ross suggests): (require ‘ido) (ido-mode ‘buffers) ;; only … Read more
Emacs: help me understand file/buffer management
Bind C-x C-b to ibuffer. This is a better buffer listing facility with many advanced features, and its default behaviour is to replace the current buffer with the buffer listing, and then bury the listing when you select a buffer (leaving you with the newly-selected buffer in place of the original one). You can simply … Read more
“Wrong type argument: commandp” error when binding a lambda to a key
global-set-key expects an interactive command. (lambda () (interactive) (forward-line 5)) ought to work. By the way, C-h f commandp is a pretty good starting point for errors like that.
Emacs: Tramp doesn’t work
If the account you’re connecting to uses some weird fancy shell prompt, then there is a good chance that this is what makes tramp trip. Log in as root, then enter PS1=”> ” (that’s a normal, standard shell (ZSH, BASH, younameit) prompt, one that tramp will understand) then switch to the user account, and launch … Read more