Re: [O] Keyboard shortcut - is there a principle behind them?
Hello, On 6 December 2013 05:01, Rainer M Krug wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > > > On 12/06/13, 10:49 , Oleh wrote: >> Initially the shortcuts were mnemonic, e.g. C-e: >> `move-end-of-line'. Obviously the keys ran out pretty quick. > > I can really imagine. But this explains some - but following your > example: C-a moves to the beginning of the line - the only "a" there > is in "Anfang", which is German for "beginning". So only partial luck > here. I can't speak for the original developers however my take on this one is as follows: C-b (for beginning) is used for "back" C-s (for start) is used for "search", C-f (find) was "forward". C-a becomes beginning-of-line by virtue of being the beginning of the alphabet. Regards, Jonathan >> Now only few shortcuts are reserved for user space and plugins, the >> most notable of which is the `C-c` prefix. That's why most custom >> modes such as org-mode and ESS bind to shortcuts with `C-c` prefix: >> there's a convention that Emacs core will not use `C-c`. > > Ah - very good to know. > >> >> A nice way of remembering shortcuts only when you need them is to >> call commands by name with `M-x`. After a while, when you note that >> you're using one particular command a lot, you'll want to learn the >> shortcut for it. > > That's how I do it - but it involves learning sequences which do not > make any sense to me - and I am sure there is some sense in the > sequence, at least within each mode. > >> >> There's one package that might be of good use to you: `smex'. It >> uses ido completion for `M-x`. You can install it from >> MELPA/Marmelade. It binds automatically to `M-x` when you install, >> although I recommend: (global-set-key "\C-t" 'smex) > > Yes - smex and ido are *very* useful - I do not know how one can use > emacs without them. > >> >> As an example, say you want to tangle. Here's what you do: C-t >> tang Now you see a bunch of rectangle commands mixed into the >> bunch. You can filter them out by noting that tangle commands have >> `org` in their name. C-SPC org C-SPC Now there's only 7 candidates >> left and you can select the one you want with C-m either by cycling >> with C-s or continuing to type part of name. >> >> `smex` logs the commands you use most. For them it usually takes >> less than 2-3 characters from the name to be recognized. E.g. if >> you use `org-babel-tangle` a lot, you can usually call it with C-t >> bab C-m. > > Very true and very useful. > >> >> Finally note that no shortcuts are set in stone. You can customize >> all of them if you want to do so. For instance, and probably a lot >> of people will disagree, it doesn't make sense for me to have >> `previous-line' on C-p. So I swap C-p and C-h: (keyboard-translate >> ?\C-h ?\C-p) (keyboard-translate ?\C-p ?\C-h) > > Absolutely true - but I usually try to keep the customization to a > minimum and to use the defaults. > > Thanks, > > Rainer > >> >> Oleh >> >> >> On Fri, Dec 6, 2013 at 10:02 AM, Rainer M Krug >> wrote: Hi >> >> one alternative subject could be "because it is Friday"... >> >> I am using org-mode and ess regularly, and I use quite a few >> keyboard shortcuts, but each time I read about a new one, I am >> wondering: why the heck these specific (default!) keyboard >> shortcuts? >> >> I am not asking why keyboard sequence, but e.g. why "export" in org >> is C-c e and why tangle is C-c C-v t, and so on. >> >> In other words: I am trying to *understand* why C-c and not C-o, >> because I have tremendous problems to remember the shortcuts - if >> I would know that there is s tree structure, where each following >> key narrows it down to further *thematically linked* commands, it >> would make it easier to learn these. >> >> Any insight into this? Or is there a emacs function which returns >> a random keyboard shortcut for a given function (some emacs >> shortcuts really seem to be that way...). >> >> Thanks, >> >> Rainer >> >> >>> > > - -- > Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation > Biology, UCT), Dipl. Phys. (Germany) > > Centre of Excellence for Invasion Biology > Stellenbosch University > South Africa > > Tel : +33 - (0)9 53 10 27 44 > Cell: +33 - (0)6 85 62 59 98 > Fax : +33 - (0)9 58 10 27 44 > > Fax (D):+49 - (0)3 21 21 25 22 44 > > email: rai...@krugs.de > > Skype: RMkrug > -BEGIN PGP SIGNATURE- > Version: GnuPG/MacGPG2 v2.0.22 (Darwin) > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQEcBAEBAgAGBQJSoaB0AAoJENvXNx4PUvmColIIAIy4AQTri6yZ6wVh8hp3/5gV > RnY8oAXfHTBGW136AwXe2H9fMwfuyc+UA6rqcGzKMx0L1SCdNBXpK3Tfn2gFjRph > iP/0TEqZgTXIwJurmn33yG6h9a0ABmEXVky+jOkHouldhjt7uuUyvT0LqmYw9pPs > NFQAU1zmVFgh/nEiJvP2VKilXPh+NXo6ulPjhtAIDb/KjGLTy0SkPJYAF6Do4WYY > wgbh+GCDzEWKgM+zQfzTq1CydX9FUdWw/zdbULhfu+f+J3/dZWtAlMfSsPi8N38g > tAVJA/ycKqIMX3/GPlN7FlscPIdYnHxvJRo45MP/3mxkiI5B5vTn9sG90/J1dwU= > =p6dh > -END PGP SIGNATURE- >
Re: [O] Keyboard shortcut - is there a principle behind them?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 12/06/13, 10:49 , Oleh wrote: > Initially the shortcuts were mnemonic, e.g. C-e: > `move-end-of-line'. Obviously the keys ran out pretty quick. I can really imagine. But this explains some - but following your example: C-a moves to the beginning of the line - the only "a" there is in "Anfang", which is German for "beginning". So only partial luck here. > Now only few shortcuts are reserved for user space and plugins, the > most notable of which is the `C-c` prefix. That's why most custom > modes such as org-mode and ESS bind to shortcuts with `C-c` prefix: > there's a convention that Emacs core will not use `C-c`. Ah - very good to know. > > A nice way of remembering shortcuts only when you need them is to > call commands by name with `M-x`. After a while, when you note that > you're using one particular command a lot, you'll want to learn the > shortcut for it. That's how I do it - but it involves learning sequences which do not make any sense to me - and I am sure there is some sense in the sequence, at least within each mode. > > There's one package that might be of good use to you: `smex'. It > uses ido completion for `M-x`. You can install it from > MELPA/Marmelade. It binds automatically to `M-x` when you install, > although I recommend: (global-set-key "\C-t" 'smex) Yes - smex and ido are *very* useful - I do not know how one can use emacs without them. > > As an example, say you want to tangle. Here's what you do: C-t > tang Now you see a bunch of rectangle commands mixed into the > bunch. You can filter them out by noting that tangle commands have > `org` in their name. C-SPC org C-SPC Now there's only 7 candidates > left and you can select the one you want with C-m either by cycling > with C-s or continuing to type part of name. > > `smex` logs the commands you use most. For them it usually takes > less than 2-3 characters from the name to be recognized. E.g. if > you use `org-babel-tangle` a lot, you can usually call it with C-t > bab C-m. Very true and very useful. > > Finally note that no shortcuts are set in stone. You can customize > all of them if you want to do so. For instance, and probably a lot > of people will disagree, it doesn't make sense for me to have > `previous-line' on C-p. So I swap C-p and C-h: (keyboard-translate > ?\C-h ?\C-p) (keyboard-translate ?\C-p ?\C-h) Absolutely true - but I usually try to keep the customization to a minimum and to use the defaults. Thanks, Rainer > > Oleh > > > On Fri, Dec 6, 2013 at 10:02 AM, Rainer M Krug > wrote: Hi > > one alternative subject could be "because it is Friday"... > > I am using org-mode and ess regularly, and I use quite a few > keyboard shortcuts, but each time I read about a new one, I am > wondering: why the heck these specific (default!) keyboard > shortcuts? > > I am not asking why keyboard sequence, but e.g. why "export" in org > is C-c e and why tangle is C-c C-v t, and so on. > > In other words: I am trying to *understand* why C-c and not C-o, > because I have tremendous problems to remember the shortcuts - if > I would know that there is s tree structure, where each following > key narrows it down to further *thematically linked* commands, it > would make it easier to learn these. > > Any insight into this? Or is there a emacs function which returns > a random keyboard shortcut for a given function (some emacs > shortcuts really seem to be that way...). > > Thanks, > > Rainer > > >> - -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Stellenbosch University South Africa Tel : +33 - (0)9 53 10 27 44 Cell: +33 - (0)6 85 62 59 98 Fax : +33 - (0)9 58 10 27 44 Fax (D):+49 - (0)3 21 21 25 22 44 email: rai...@krugs.de Skype: RMkrug -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.22 (Darwin) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJSoaB0AAoJENvXNx4PUvmColIIAIy4AQTri6yZ6wVh8hp3/5gV RnY8oAXfHTBGW136AwXe2H9fMwfuyc+UA6rqcGzKMx0L1SCdNBXpK3Tfn2gFjRph iP/0TEqZgTXIwJurmn33yG6h9a0ABmEXVky+jOkHouldhjt7uuUyvT0LqmYw9pPs NFQAU1zmVFgh/nEiJvP2VKilXPh+NXo6ulPjhtAIDb/KjGLTy0SkPJYAF6Do4WYY wgbh+GCDzEWKgM+zQfzTq1CydX9FUdWw/zdbULhfu+f+J3/dZWtAlMfSsPi8N38g tAVJA/ycKqIMX3/GPlN7FlscPIdYnHxvJRo45MP/3mxkiI5B5vTn9sG90/J1dwU= =p6dh -END PGP SIGNATURE-
Re: [O] Keyboard shortcut - is there a principle behind them?
Initially the shortcuts were mnemonic, e.g. C-e: `move-end-of-line'. Obviously the keys ran out pretty quick. Now only few shortcuts are reserved for user space and plugins, the most notable of which is the `C-c` prefix. That's why most custom modes such as org-mode and ESS bind to shortcuts with `C-c` prefix: there's a convention that Emacs core will not use `C-c`. A nice way of remembering shortcuts only when you need them is to call commands by name with `M-x`. After a while, when you note that you're using one particular command a lot, you'll want to learn the shortcut for it. There's one package that might be of good use to you: `smex'. It uses ido completion for `M-x`. You can install it from MELPA/Marmelade. It binds automatically to `M-x` when you install, although I recommend: (global-set-key "\C-t" 'smex) As an example, say you want to tangle. Here's what you do: C-t tang Now you see a bunch of rectangle commands mixed into the bunch. You can filter them out by noting that tangle commands have `org` in their name. C-SPC org C-SPC Now there's only 7 candidates left and you can select the one you want with C-m either by cycling with C-s or continuing to type part of name. `smex` logs the commands you use most. For them it usually takes less than 2-3 characters from the name to be recognized. E.g. if you use `org-babel-tangle` a lot, you can usually call it with C-t bab C-m. Finally note that no shortcuts are set in stone. You can customize all of them if you want to do so. For instance, and probably a lot of people will disagree, it doesn't make sense for me to have `previous-line' on C-p. So I swap C-p and C-h: (keyboard-translate ?\C-h ?\C-p) (keyboard-translate ?\C-p ?\C-h) Oleh On Fri, Dec 6, 2013 at 10:02 AM, Rainer M Krug wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Hi > > one alternative subject could be "because it is Friday"... > > I am using org-mode and ess regularly, and I use quite a few keyboard > shortcuts, but each time I read about a new one, I am wondering: why > the heck these specific (default!) keyboard shortcuts? > > I am not asking why keyboard sequence, but e.g. why "export" in org is > C-c e and why tangle is C-c C-v t, and so on. > > In other words: I am trying to *understand* why C-c and not C-o, > because I have tremendous problems to remember the shortcuts - if I > would know that there is s tree structure, where each following key > narrows it down to further *thematically linked* commands, it would > make it easier to learn these. > > Any insight into this? Or is there a emacs function which returns a > random keyboard shortcut for a given function (some emacs shortcuts > really seem to be that way...). > > Thanks, > > Rainer > > > - -- > Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation > Biology, UCT), Dipl. Phys. (Germany) > > Centre of Excellence for Invasion Biology > Stellenbosch University > South Africa > > Tel : +33 - (0)9 53 10 27 44 > Cell: +33 - (0)6 85 62 59 98 > Fax : +33 - (0)9 58 10 27 44 > > Fax (D):+49 - (0)3 21 21 25 22 44 > > email: rai...@krugs.de > > Skype: RMkrug > -BEGIN PGP SIGNATURE- > Version: GnuPG/MacGPG2 v2.0.22 (Darwin) > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQEcBAEBAgAGBQJSoZKpAAoJENvXNx4PUvmCyp8IAM2uzkocZLD0MVVw/DSI4w7f > ZPFqVBppkzvc5Ef4vuA0Om4ETWqsgYaAs9Tnz3Q3mDGnkZ01yl4/PDGNav/sRGGY > pJs+HElogJCulNrHibh0Ai8X9w29yWZQZnXmPr5lAdmSjTDziUSdUakXte2KkD7O > v+82YoTDAbycUcqK7CUAFNmyNqn5UsXf1h2wYfe6xYaQUPTXnEWsLJAuE3otVE1P > fbmTAbOy+mq+4+2krwp+kCyGU4hoynpJBH1DBUvQgtJeEGYNL2AxYCnm4BU2axwK > qSykHLineyacD4x4RWzEu8uya/P/Q7OSAWQmdsnOT7xqrJo9wxphfrBVefLJb1A= > =BbQi > -END PGP SIGNATURE- >
[O] Keyboard shortcut - is there a principle behind them?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi one alternative subject could be "because it is Friday"... I am using org-mode and ess regularly, and I use quite a few keyboard shortcuts, but each time I read about a new one, I am wondering: why the heck these specific (default!) keyboard shortcuts? I am not asking why keyboard sequence, but e.g. why "export" in org is C-c e and why tangle is C-c C-v t, and so on. In other words: I am trying to *understand* why C-c and not C-o, because I have tremendous problems to remember the shortcuts - if I would know that there is s tree structure, where each following key narrows it down to further *thematically linked* commands, it would make it easier to learn these. Any insight into this? Or is there a emacs function which returns a random keyboard shortcut for a given function (some emacs shortcuts really seem to be that way...). Thanks, Rainer - -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Stellenbosch University South Africa Tel : +33 - (0)9 53 10 27 44 Cell: +33 - (0)6 85 62 59 98 Fax : +33 - (0)9 58 10 27 44 Fax (D):+49 - (0)3 21 21 25 22 44 email: rai...@krugs.de Skype: RMkrug -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.22 (Darwin) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJSoZKpAAoJENvXNx4PUvmCyp8IAM2uzkocZLD0MVVw/DSI4w7f ZPFqVBppkzvc5Ef4vuA0Om4ETWqsgYaAs9Tnz3Q3mDGnkZ01yl4/PDGNav/sRGGY pJs+HElogJCulNrHibh0Ai8X9w29yWZQZnXmPr5lAdmSjTDziUSdUakXte2KkD7O v+82YoTDAbycUcqK7CUAFNmyNqn5UsXf1h2wYfe6xYaQUPTXnEWsLJAuE3otVE1P fbmTAbOy+mq+4+2krwp+kCyGU4hoynpJBH1DBUvQgtJeEGYNL2AxYCnm4BU2axwK qSykHLineyacD4x4RWzEu8uya/P/Q7OSAWQmdsnOT7xqrJo9wxphfrBVefLJb1A= =BbQi -END PGP SIGNATURE-
