擒猿小舖

Vim

• Vim is a text editor which based on Vi editor common to Unix-like systems.
• Vim supports commands for tracing codes:
• /word : Search word from top to bottom
• ?word : Search word from bottom to top
• /jo[ha]n : Search john or joan
• /fred\|joe : Search fred or joe
• /\<the : Search the, theatre or then
• /the\>: Search the or breathe
• /\<the\> : Search 'the' (or search by * and #)
• Basically projects have thousands of lines of code divided into hundreds or thousands of files.
• In order to access various function definitions within the source code repository effectively using a Vim editor there is a great need for using add-ons which provides easy code go through.

Ctags

• Ctags is a program that generates an index (or tag) file of language objects found in source files.
• Functions, variables, class members, macros and so on could be indexed and saved in the tag file.
• These tags allow definitions to be quickly and easily located by a text editor or other utility.
• Supporting many programming languages.

Installing Ctags package

$ sudo apt-get install exuberant-ctags

Generating tags on your source code

$ cd /proj

$ ctags -R *

Finally include this single tag file as shown below in ~/.vimrc.

:set tags=~/proj/tags

Using Ctags in cursor position

• Place the cursor on the first character of the function name and press the following keys:
• CTRL+] : Jump to the file containing the definition of function name.
• CTRL+t : Jump back to the previous location.