In my DOS prompt I have to put in a tilde (~) character to open any files.
For some reason it won't show up in the DOS box/prompt.
Is there any form of Ctrl shortcut key thing that could get me to typing a ~ character?
It's only the DOS prompt that won't recognize that key is what gets me the most though.
Hold down the Alt key and type 0126 (zero one two six) on the numeric keypad. That is the ascii value of that character.
GWBasic:
10 a$="~"
20 ? asc(a$)
run
126
In DOS you need to begin with a 0 + value you need for other symbols and it only works on the numeric keypad.
On Spanish keyboards you can press "Alt Gr" and "4".
That key combination will write a tilde anywhere, including the command line.
How about trying to copy/paste it?
Start->Run->charmap
select the ~ char and hit select then copy
open the prompt window and go Alt+Space then Edit->Paste
I typed SHIFT and the "key left to the digit 1" to produce a tilde ~ in my multimixed system.
(This actually worked. Actual keyboard is de-sg, but the multiemulated environment behaves like a DOS or WinPE US keyboard, in a command window.)
Related
I have a legacy system that only accepts Windows \r\n and I want to edit a file in VS Code that has just \n to have \r\n.
I'm trying to use a Regex replace:
But this puts literal \r in instead of the whitespace char.
I've tried putting a newline in the replacement using SHIFT+ENTER:
But this just puts in \n.
How do I change the line feed chars used and save the file in VS Code?
There's the text "LF" in the bottom bar on the right, click on it and select "CRLF". Or press Ctrl+Shift+P and enter Change End of Line Sequence.
No idea why your approach doesn't work. Nor does \x0D or \15 get recognized. I'd call it a bug.
For multiple files, on Linux, I'd do it outside of the editor, e.g., with
find somedir -name '*.someext' -exec perl -pi -e 's/\n/\r\n/' {} +
Just press Ctrl+H and select regex replace. Then start input:
Find what: ^\n
Replace with: \r\n
You can try this one
In the local searchbox (Ctrl + F) you can insert newlines by pressing Ctrl + Enter.
https://www.graef.io/find-and-replace-with-a-newline-in-visual-studio-code/
Visual Studio Code provides an option to Select End of Line Sequence in its taskbar on bottom right:
When clicked, it'll provide an option to choose between CRLF (Carriage return and Line feed: Windows default) and LF (Line feed alone: Linux supported):
Make sure to save the file once the EOL sequence is changed.
In Eclipse for C/C++ on Windows 10, I cannot insert the tilde symbol '~' which works fine in other applications.
I'm on a french keyboard, so I type Alt Gr + '~' to access it ('~' key is also the one for 'é' and '2').
I saw similar problems with curly braces or asterisks, resolved by deactivating a given shortcut, but I saw none for tildes.
I searched in the shortcuts of eclipse, but found none using '~' key with alt gr (even none with '~' key and alt or ctrl or something else).
Thank you in advance
By typing Alt+keys 0 to 9 from numeric pad to compose values from 1 to 255 or 0128 to 0255 (list of codes and corresponding characters), it's possible to enter a few characters which are not available on the keyboard:
~ : use Alt+126
` : use Alt+96
I found a solution that works for me on my Turkish Q layout, in which AltGr+ü produces tilde. It is to create a new keyboard layout and remove the dead key attribute from this key, which has the added benefit of removing this annoying "feature" of requiring two key presses to get these symbols. A detailed solution is at: https://superuser.com/a/414415/351077
Somehow the language tray icon displays the wrong language ("ENG") for the newly created layout even though the properties in the layout editor are correct, but I don't mind.
On GitHub
why does the code look like this?
It looks fine in all the code editors out there
Ctrl+M characters present in a file in linux, when originally the file came from Windows environment.
You may need to remove Ctrl+M characters, when you import a text file from MS-DOS (or MS-Windows), and forget to transfer it in ASCII or text mode. Here are several ways to do it; pick the one you are most comfortable with.
The easiest way is probably to use the stream editor sed to remove the ^M characters. Type this command: % sed -e "s/^M//" filename > newfilename
To enter ^M, type CTRL-V, then CTRL-M. That is, hold down the CTRL key then press V and M in succession.
You can also do it in vi: % vi filename
Inside vi [in ESC mode] type: :%s/^M//g
To enter ^M, type CTRL-V, then CTRL-M. That is, hold down the CTRL key then press V and M in succession.
You can also do it inside Emacs. To do so, follow these steps:
Go to the beginning of the document
Type: M-x replace-string RET C-q C-m RET RET
where "RET" means and C-q and C-m mean .
Courtesy: https://its.ucsc.edu/unix-timeshare/tutorials/clean-ctrl-m.html
I have a .txt file named COPYING which is edited on windows.
It contains Windows-style line breaks :
$ file COPYING
COPYING: ASCII English text, with CRLF line terminators
I tried to convert it to Unix style using dos2unix. Below is the output :
$ dos2unix COPYING
dos2unix: Skipping binary file COPYING
I was surprised to find that the dos2unix program reports it as a binary file. Then using some other editor (not Emacs) I found that the file contains a control character. I am interested in finding all the invisible characters in the file using Emacs.
By googling, I have found the following solution which uses tr :
tr -cd '\11\12\40-\176' < file_name
How can I do the same in an Emacs way? I tried the Hexl mode. The Hexl mode shows text and their corresponding ASCII values in a single buffer which is great. How do I find the characters which have ASCII values other than 11-12, 40-176 (i.e tab, space, and visible characters)? I tried to create a regular expression for that search, but it is quite complicated.
To see invisible characters, you can try whitespace-mode. Spaces and tabs will be displayed with a symbol in a different face. If the coding system is automatically being detected as dos (showing (DOS) on the status bar), carriage returns at the end of a line will be hidden as well. Run revert-buffer-with-coding-system to switch it to Unix or binary (e.g. C-x RET r unix) and they'll always show up as ^M. The binary coding system will display any non-ASCII characters as control characters as well.
Emacs won't hide any character by default. Press Ctrl+Meta+%, or Esc then Ctrl+% if the former is too hard on your fingers, or M-x replace-regexp RET if you prefer. Then, for the regular expression, enter
[^#-^H^K-^_^?]
However, where I wrote ^H, type Ctrl+Q then Ctrl+H, to enter a “control-H” character literally, and similarly for the others. You can press Ctrl+Q then Ctrl+Space for ^#, and usually Ctrl+Q then Backspace for ^?. Replace all occurrences of this regular expression by the empty string.
Since you have the file open in Emacs, you can change its line endings while you're at it. Press C-x RET f (Ctrl+X Return F) and enter us-ascii-unix as the new desired encoding for the file.
Check out M-x set-buffer-file-coding-system. From the documentation:
(set-buffer-file-coding-system CODING-SYSTEM &optional FORCE NOMODIFY)
Set the file coding-system of the current buffer to CODING-SYSTEM.
This means that when you save the buffer, it will be converted
according to CODING-SYSTEM. For a list of possible values of
CODING-SYSTEM, use M-x list-coding-systems.
So, going from DOS to UNIX, M-x set-buffer-file-coding-system unix.
In GNU screen, I want to change the default command binding to Alt-s (by tweaking .screenrc) instead of the default C-a, the reason is I use emacs hence GNU screen binds the C-a key, sending "C-a" to the emacs becomes tedious (as #Nils said, to send "C-a" I should type "C-a a"), as well as "C-a" in bash shell, and I could change the escape to C- but some of them are already mapped in emacs and other combinations are not as easy as ALT-s . If anyone has already done a ALT key mapping, please do let me know.
It is possible to work around :escape command limitations using registers and :bindkey command. Just put this in .screenrc:
# reset escape key to the default
escape ^Aa
# auxiliary register
register S ^A
# Alt + x produces ^A and acts as an escape key
bindkey "^[x" process S
## Alt + space produces ^A and acts as an escape key
# bindkey "^[ " process S
See http://adb.cba.pl/gnu-screen-tips-page-my.html#howto-alt-key-as-escape
From my reading of man screen it seems like the only meta character that screen can use for the command binding is CTRL:
escape xy
Set the command character to x and the character generating a literal
command character (by triggering the "meta" command) to y (similar to
the -e option). Each argument is either a single character, a two-character
sequence of the form "^x" (meaning "C-x"), a backslash followed by an octal
number (specifying the ASCII code of the character), or a backslash followed
by a second character, such as "\^" or "\\". The default is "^Aa".
If there is some mapping that you don't use in emacs, even if it's inconvenient, like C-|, then you could use your terminal input manager to remap ALT-X to that, letting you use the ALT binding instead. That would be a little hackish though.
I'm an Emacs and screen user as well. Although I rarely use Emacs in a terminal -- and as such in a screen session -- I didn't want to give up C-a for the shell either (which uses Emacs key bindings). My solution was to use C-j as the prefix key for screen, which I was willing to sacrifice. In Emacs programming modes it is bound to (newline-and-indent) which I bound to RET as well, so I really don't miss it.
By the way: I know this is an advise rather than an answer, but I felt this would be valuable enough to post nevertheless.
To make Alt+X the default prefix for commands and free C-a, add the following lines to .screenrc:
escape ^||
bindkey "^[x" command
As a side effect C-| will be command prefix too. If you need this keys to be free too, then fix "escape ^||" accordingly.
Screen doesn't have any shorthand syntax for alt bindings, but you can give it the octal code directly. For instance on my machine, Alt-x has the hex code F8, or 370 octal, so putting
escape \370x
in my screenrc changed the escape code to alt-X
Tested and works with screen 4.00.03 on Linux.
You may have to change the escape, since I think this may depend on things like your language and codeset, etc: how I found out what my escape code was was to type
$ echo -n ^QM-x | perl -ne 'printf "%lo\n", ord($_)'
^Q is the quoted-insert command for readline (it inserts what you type directly without trying to interpret it) and M-x was a literal Alt-X.
Fellow emacs user here.
The best solution I've found is a ~/.screenrc file with the following:
# C-a :source .screenrc
escape ^gg
Live updated here: https://gist.github.com/1058111
See also: http://ubuntuforums.org/showthread.php?t=498675
Something I have had for years in my .screenrc:
escape ^Zz
which is now hardwired in muscle memory for me.
Somehow I ended up having to share a screen with someone else's config, and now I keep stopping processes all the time (bash ^Z)... Not funny...