Questions tagged [cc-mode]

Major mode for C, C++, Objective-C, Java, CORBA IDL, Pike, AWK. Included in GNU Emacs and XEmacs.

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10
votes
3answers
3k views

before-save-hook for cc-mode

I want to customize cc-mode to execute a function before saving. One solution would be to modify cc-mode keymap to bind C-x C-s to a function which performs the work I need and then saves it. My ...
8
votes
1answer
381 views

formatting constexpr if in c++-mode

I recently started using C++17, which brings constexpr if. This however screws up c++-modes default indentation. // emacs 25.3.2 with --no-init if constexpr (n == 1) { // Why? } else if ...
8
votes
1answer
157 views

Custom indentation for specific lines?

I currently try to figure out, how I can handle some lines specifically without messing up the indentation of the rest of the buffer. Consider the following function MyFunc as an example: void MyFunc(...
6
votes
2answers
919 views

Change the way CC-mode font-lock the C++11 `auto` syntax

With C++11, the keyword auto attained a new syntax and semantics. However, it seems that CC-mode has not been aware of this. For example, if I write auto var = exp, I get var in green, in which ...
6
votes
3answers
759 views

Customizing c-mode indentation behavior in Emacs 24.4

Before Emacs 24.4, indentation in c-mode happened after typing things like ;, , and so on and I like this behavior. But in Emacs 24.4, c-mode also indents on RET. This causes a lot of problems for me ...
5
votes
2answers
763 views

How to use C++ comments “//” in c-mode?

In c-mode comment-region is adding /* */ style comments. Is there a way to default to using C++ style // prefix in C source files instead?
4
votes
1answer
440 views

rgrep default files pattern

How can I modify the default FILES pattern in rgrep for C++ mode? For C mode the default is *.[ch]. For C++, it is *.cc *.cxx *.cpp *.C *.CC *.c++. I would like to change it to *.cc *.[ch]xx *.[ch]...
4
votes
2answers
670 views

CC-Mode - Javadoc Comment Colors in C/C++

I've been fiddling around a bit with CC-mode lately and figured that since I prefer to comment my functions/classes with javadoc-like syntax, I'd like to use the built-in comment highlighting provided ...
4
votes
1answer
558 views

How to highlight “constexpr” in cc-mode?

Question Pretty straightforward: How to highlight constexpr in cc-mode (editing C++ code)? Example If I use const as in the following example const double = 3.14 const gets highlighted as a ...
4
votes
0answers
2k views

Support C++11 syntax in c++-mode

I want correct indentation with my C++ code. The following piece of code indents properly. It nicely indents the access label and the member declaration independently. class Test : public Base { ...
3
votes
4answers
94 views

How do I find the variable or lisp code controlling a face at a particular column?

For the longest time I have been ignoring a face change at column 80 in my Java code. The text switches to a pinkish color as shown below. Now it is sufficiently bothersome that I would like to ...
3
votes
2answers
175 views

Minor modes not working with derived mode from c++-mode

I created a derived mode (using define-derived-mode) based on c++-mode to include new keywords, etc. The mode is working great, but I'm having problems with other minor modes that stop working with ...
3
votes
1answer
40 views

How to re-enable syntax highlighting of code that have been disabled by #if preprocessor statements

Code between #if SYMBOL and #endif is greyed out in cc-mode if the SYMBOL has not been defined within the current file. The project that I´m currently working on has a common code base for Mac and ...
3
votes
1answer
88 views

Update cc-style to use a mix of tabs and spaces, depending on context?

I'm looking for a way to mix tabs and spaces in my cc-styles. Whilst I question the sanity of this coding style, and wouldn't ever choose to use it had I the choice (seems other people share my view),...
3
votes
1answer
119 views

Rainbow-Delimiters and CC-Mode Conflics

I just recently found the "rainbow-delimiters-mode" package and found it quite useful, however I seem to have run into a snag with it when using it in C-like languages: Naturally, I'd prefer to ...
2
votes
2answers
2k views

Indentation after braces in C

I don't know what the formal name of it is (this being one of the reasons that I can't find how to achieve it). But, what I want is to make Emacs start the second bracket with the same amount of space ...
2
votes
2answers
991 views

cc-styles c-offsets-alist setting for C++11 lambda brace indentation

I am trying to configure my cc-styles to use a single basic offset for the braces of an inline defined lambda. I have a function template which takes a functor as an argument template<typename ...
2
votes
2answers
272 views

Create new major mode from cc-mode that allows comments with two dashes

It is possible and relatively easy to create a new major mode, deriving from c-mode, and just add two dashes '--' to work as comments too? I have checked many resources, but couldn't find anything ...
2
votes
3answers
500 views

Changing or adding compiling options in cc-mode

In cc-mode, when we go to compile, M-x followed by compile, the default option is make -k. If I hit the down arrow, I am told no defaults available. Is it possible to add the option g++ -Wall ...
2
votes
2answers
4k views

How to configure linum-mode in spacemacs?

How can I configure spacemacs to always have linum-mode active in C/C++ buffers (cc-mode)?
2
votes
2answers
1k views

C++ Incorrect Enum Indentation

It seems like cc-mode indentation is working rather well, however I seem to have run into a minor issue when creating a few enums in C++. Emacs seems to handle almost all kinds of enums rather well ...
2
votes
1answer
364 views

Emacs indent with tabs to 2 columns

Current with C, Javascript, Ruby, etc. when inserting a block with { <RETURN>, Emacs automatically indents the next line, but it does so with spaces. How do I change this behavior to tab ...
2
votes
1answer
114 views

Indentation of multi-line arrays within braces?

Currently in C mode, contents of a muli-line arrays are aligned with the brace. eg: const unsigned int array[4] = { A, B, ...
2
votes
1answer
693 views

Override c++-mode font lock

I am improving the C++ highlighting in Emacs with the minor mode: modern-cpp-font-lock. Consider this following C++14 code: int main() { int i = 1'2'3l; } From cppreference.com Optional single ...
2
votes
2answers
212 views

Added spaces between function arguments

I'd like to transform: function arg(a,b,c){} to function arg( a, b, c ){} Is there a way to do this or set it as part of c style auto indentation? So it will happen when editing JavaScript, C++, ...
2
votes
0answers
23 views

Derived mode from CC Mode: how do I write one?

Where is the definitive, up-to-date guide on how to write a derived mode from CC Mode. I have a mode that's malfunctioning and thought I might just rewrite it, but information I find is spotty and ...
2
votes
0answers
180 views

How to set indentation style substatement-open offset parameter from .dir-locals.el?

Within CC mode, for C and C++ files inside a directory, I'd like to have the open braces following a case/do/for/if/while not indented, whatever the style is and without having to change anything in ....
2
votes
0answers
50 views

Is it possible to detect C/C++/Java variable declarations.?

I'm writing a minor mode to handle automatic spacing of operator characters, but I'm having some trouble with C/C++. The problem is that I can't figure out how to tell in general whether a * is a ...
1
vote
2answers
94 views

Stop reindenting `if` after `else`

Given the file test.c: int main() { if (a) foo(); else if (b) // line 6 bar(); else baz(); } Whenever a comma or paren is typed while point is on line 6 (...
1
vote
1answer
66 views

How to indent c++ “special” source lines that don't end with semicolons

I'm working with a system that uses special macros a lot. For instance: class UDSSLib : public UFunctionLibrary { GENERATED_BODY() void foo(); int i; } The problem is the GENERATED_BODY() line....
1
vote
2answers
91 views

delete-c-electric-paren deletes active region in CC mode with delete-selection-mode enabled

I've the delete-selection-mode enabled. In programming modes like Python and Lua, or in general modes like Fundamental or Text, when there's an active region, pressing ( rightly wraps the region with ...
1
vote
1answer
288 views

Indenting within block comments in C-mode Emacs

After writing functions in C/C++, I like to format my block comments that explain a function's purpose, parameters, use, and so on. (See example below) However, to indent my comments in emacs, I ...
1
vote
1answer
79 views

Make wide string literal for C/C++

Is there function/package that allows to make "wide string literals" as defined by C/C++ standards. That is, where one has to replace all non-ascii characters with escaped "\x.." sequences.
1
vote
2answers
67 views

CC-Mode doesn't indent arguments to templated functions starting with a curly bracket

[Reposted here after a comment from wilx on stackoverflow.com] Consider the following snippet of C++ code, indented using cc-mode: auto good1 = f(a, {1, 2}); // ((arglist-cont-...
1
vote
0answers
37 views

Enable `cc-mode` documentation highlightning per minor mode

I am writing a minor mode for enabling support for JML within Java files. I realized the syntax highlighting with cc-mode's support for documentation comments. It works if I set c-doc-comment-style ...
1
vote
0answers
161 views

Is this a c-default-style? If not, how can i configure it?

I've just started using spacemacs and the docstrings for cc-styles are a bit daunting. I've also just started working on a new project in c, and would like to keep consistent with existing style: ...
1
vote
0answers
19 views

Personalize indentation for new C++ language features [duplicate]

I'm starting to use C++-17, and one of the new features is if constexpr, which breaks completely the usual if identation: int main() { if constexpr(true) { return 1; } else { ...
1
vote
0answers
102 views

Structures are defined using a macro, flycheck gives errors

In our source code we surround structures with a macro (MKDIFF) that serves as a flag for the Makefile system. It does not expand into anything, just a flag. Flycheck (understandably) flags these ...
1
vote
0answers
324 views

Emacs as environment for iOS development

Is there any modes which may improve development experience for nowadays ObjC (syntax highlight for method calls, properties, blocks, literals, lightweight generics, modern keywords)? Ideally with ...
1
vote
0answers
438 views

c-indent-line-or-region: Variable binding depth exceeds max-specpdl-size

I'm trying to define a new major mode using define-generic-mode and want to try reusing c-indent-line-or-region for my indent-line-function. I've inserted (set (make-local-variable 'indent-line-...
1
vote
0answers
88 views

How does forward-list work for “<>” in c++-mode?

I am trying to understand how forward-list matches template delimiters <> in c++-mode. forward-list in lisp.el calls scan-lists with the appropriate arguments. The documentation for scan-lists ...
0
votes
1answer
234 views

Setup c-mode indentation, braces and tabs

I've been trying to setup cc-mode based files to behave in the way I want, but with so many varying opinions and suggested ways of doing things, I've not been able to get things just right. All I ...
0
votes
1answer
147 views

Customized c-offsets-alist override c-file-style in dir-locals

Assuming I customized my default C indentation settings through M-x customize-variable c-offsets-alist: (custom-set-variables '(c-offsets-alist (quote ((statement-case-open . 0) (...
0
votes
2answers
245 views

GNU Emacs - Space in compile command

I have written code to customize the compile-command to use MSBuild.exe if a .vcxproj file is found in the current directory for c-mode files via a c-mode-common-hook. Since MSBuild is not in the path ...
0
votes
1answer
76 views

Customizing indentation style for continuation lines?

I would like to customize the "k&r" indentation style, so that continuation lines are indented 8 spaces, like this: if (first && second) { // <- 8 spaces. third(); } -- ...
0
votes
1answer
48 views

enlarge font of functions only in C code

I am trying to do exactly this for my C code, but once I edit latex, the setting is still active in uncomfortable places. I need to preserve the setting once I exit emacs and in all the buffers with C ...
0
votes
1answer
52 views

objc-mode: Comment-end face is not same face as comment-start

How can I configure/modify objc-mode so that the face of comment-end is the same face as comment-start? [The goal is to have commend-end always use font-lock-comment-delimiter-face, instead of font-...
0
votes
1answer
132 views

emacs cc-mode installation issue

I am relatively new to emacs. I'm wanting to set up cc-mode. I'm having trouble with the process. When I initially viewed list-packages, a search brought up cc-mode, but something I've done means it ...
0
votes
0answers
23 views

`scad-mode` (derived from CC Mode) hangs Emacs. How to debug/fix?

I have found that scad-mode.el, a derived mode from CC Mode, which can be found here: https://github.com/openscad/openscad/blob/master/contrib/scad-mode.el hangs emacs if I type #( into the window,...
0
votes
0answers
10 views

cmake-ide in projects with only make

What are my options to mimic cmake-ide in the projects that are not built with CMake? The features that I want the most are find-definition and autocomplete. For the compilation related features, ...