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<HTML><HEAD><TITLE> Features for Programming </TITLE></HEAD><BODY><A NAME="Features_for_Programming"></A><H1> Features for Programming </H1><A NAME="Programming_with_NEdit"></A><H2> Programming with NEdit </H2><P>Though general in appearance, NEdit has many features intended specificallyfor programmers. Major programming-related topics are listed in separatesections under the heading: "Features for Programming": <A HREF="syntax.html#Syntax_Highlighting">Syntax Highlighting</A>,<A HREF="tabs.html#Tabs/Emulated_Tabs">Tabs/Emulated Tabs</A>, <A HREF="tags.html#Finding_Declarations_(ctags)">Finding Declarations (ctags)</A>, <A HREF="calltips.html#Calltips">Calltips</A>, and <A HREF="indent.html#Auto/Smart_Indent">Auto/Smart Indent</A>. Minor topics related to programming are discussed below:</P><P><H3>Language Modes</H3></P><P>When NEdit initially reads a file, it attempts to determine whether the fileis in one of the computer languages that it knows about. Knowing what languagea file is written in allows NEdit to assign highlight patterns and smart indentmacros, and to set language specific preferences like word delimiters, tabemulation, and auto-indent. Language mode can be recognized from both the filename and from the first 200 characters of content. Language mode recognitionand language-specific preferences are configured in: Preferences -> DefaultSettings -> Language Modes....</P><P>You can set the language mode manually for a window, by selecting it from themenu: Preferences -> Language Modes.</P><P><H3>Backlighting [EXPERIMENTAL]</H3></P><P>NEdit can be made to set the background color of particular classes ofcharacters to allow easy identification of those characters. This isparticularly useful if you need to be able to distiguish between tabsand spaces in a file where the difference is important. The colors usedfor backlighting are specified by a resource, "nedit*backlightCharTypes". You can turn backlighting on and off through thePreferences -> Apply Backlighting menu entry.</P><P>If you prefer to have backlighting turned on for all new windows, usethe Preferences -> Default Settings -> Apply Backlighting menu entry. This settings can be saved along with other preferences using Preferences -> Save Defaults.</P><P><B>Important:</B> In future versions of NEdit, the backlighting feature will beextended and reworked such that it becomes easier to configure. The currentway of controlling it through a resource is generally considered to be belowNEdit's usability standards. These future changes are likely to beincompatible with the current format of the "nedit*backlightCharTypes"resource, though. Therefore, it is expected that there will be no automaticmigration path for users who customize the resource.</P><P><H3>Line Numbers</H3></P><P>To find a particular line in a source file by line number, choose Goto Line#... from the Search menu. You can also directly select the line number textin the compiler message in the terminal emulator window (xterm, decterm,winterm, etc.) where you ran the compiler, and choose Goto Selected from theSearch menu.</P><P>To find out the line number of a particular line in your file, turn onStatistics Line in the Preferences menu and position the insertion pointanywhere on the line. The statistics line continuously updates the line numberof the line containing the cursor.</P><P>To go to a specific column on a given line, choose Goto Line #... from theSearch menu and enter a line number and a column number separated by a comma. (e.g. Enter "100,12" for line 100 column 12.) If you want to go toa column on the current line just leave out the line number. (e.g. Enter",45" to go the column 45 on the current line.)</P><P><H3>Matching Parentheses</H3></P><P>To help you inspect nested parentheses, brackets, braces, quotes, and othercharacters, NEdit has both an automatic parenthesis matching mode, and a GotoMatching command. Automatic parenthesis matching is activated when you type,or move the insertion cursor after a parenthesis, bracket, or brace. Itmomentarily highlights either the opposite character ('Delimiter') or theentire expression ('Range') when the opposite character is visible in thewindow. To find a matching character anywhere in the file, select it orposition the cursor after it, and choose Goto Matching from the Search menu. If the character matches itself, such as a quote or slash, select the firstcharacter of the pair. NEdit will match {, (, [, <, ", ', `, /, and \.Holding the Shift key while typing the accelerator key (Shift+Ctrl+M, bydefault), will select all of the text between the matching characters.</P><P>When syntax highlighting is enabled, the matching routines can optionallymake use of the syntax information for improved accuracy. In that case,a brace inside a highlighted string will not match a brace inside a comment,for instance.</P><P><H3>Opening Included Files</H3></P><P>The Open Selected command in the File menu understands the C preprocessor's#include syntax, so selecting an #include line and invoking Open Selected willgenerally find the file referred to, unless doing so depends on the settings ofcompiler switches or other information not available to NEdit.</P><P><H3>Interface to Programming Tools</H3></P><P>Integrated software development environments such as SGI's CaseVision andCenterline Software's Code Center, can be interfaced directly with NEdit viathe client server interface. These tools allow you to click directly oncompiler and runtime error messages and request NEdit to open files, and selectlines of interest. The easiest method is usually to use the tool's interfacefor character-based editors like vi, to invoke nc, but programmatic interfacescan also be derived using the source code for nc.</P><P>There are also some simple compile/review, grep, ctree, and ctags browsersavailable in the NEdit contrib directory on ftp.nedit.org.<P><HR></P><P></P></BODY></HTML>⌨️ 快捷键说明
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