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diff --git a/tde-i18n-nl/docs/kdebase/kate/advanced.docbook b/tde-i18n-nl/docs/kdebase/kate/advanced.docbook new file mode 100644 index 00000000000..4a22df55e00 --- /dev/null +++ b/tde-i18n-nl/docs/kdebase/kate/advanced.docbook @@ -0,0 +1,215 @@ +<chapter id="advanced-editing-tools"> +<title>Advanced Editing Tools</title> + +<sect1 id="comment"> + +<title>Comment/Uncomment</title> + +<para>The Comment and Uncomment commands, available from the +<guimenu>Tools</guimenu> menu allow you to add or remove comment +markers to the selection, or the current line if no text is selected, +it comments are supported by the format of the text you are +editing.</para> + +<para>The rules for how commenting is done are defined in the syntax +definitions, so if syntax highlighting is not used, +commenting/uncommenting is not possible.</para> + +<para>Some formats define single line comment markers, some multi line +markers and some both. If multi line markers are not available, +commenting out a selection that does not fully include its last line +is not possible.</para> + +<para>If a single line marker is available, commenting single lines is +preferred where applicable, as this helps to avoid problems with +nested comments.</para> + +<para>When removing comment markers, no uncommented text should be +selected. When removing multiline comment markers from a selection, +any whitespace outside the comment markers is ignored.</para> + +<para>To place comment markers, use the +<menuchoice><guimenu>Tools</guimenu><guimenuitem>Comment</guimenuitem></menuchoice> +menu item or the related keyboard shortcut sequence, default is +<keycombo action="simul">&Ctrl;<keycap>#</keycap></keycombo>.</para> + +<para>To remove comment markers, use the +<menuchoice><guimenu>Tools</guimenu><guimenuitem>Uncomment</guimenuitem></menuchoice> +menu item or the related keyboard shortcut, default is <keycombo +action="simul">&Ctrl;&Shift;<keycap>#</keycap></keycombo>.</para> + +</sect1> + +<sect1 id="edit-command"> + +<title>Editing Command</title> + +<para>This tool, available from the +<menuchoice><guimenu>Tools</guimenu><guimenuitem>Editing +Command</guimenuitem></menuchoice> menu item, provides access to a +small set of +<application>vi</application>/<application>vim</application>-like +commands for editing the text. It is a no nonsense tool for advanced +or experienced users, but do not let that hold you back from +experiencing its powers!</para> + +<para>Currently, the following commands are available:</para> + +<variablelist> +<varlistentry> +<term><command>time</command></term> + +<listitem> +<para>This command will output the current time as known by your +computer in the format <quote>HH:MM:SS</quote></para> + +<para>To use it, launch the Editing Command Dialog and type into the +input box the word <userinput>time</userinput></para> +</listitem> +</varlistentry> + +<varlistentry> +<term><command>char</command></term> +<listitem> +<para>This command allows you to insert literal characters by their +numerical identifier, in decimal, octal or hexadecimal form. +To use it launch the Editing Command dialog and type <userinput>char: +[number]</userinput> in the entry box, then hit +<guibutton>OK</guibutton>.</para> + +<example> +<title><command>char</command> examples</title> + +<para>Input: <userinput>char:234</userinput></para> +<para>Output: <computeroutput>ê</computeroutput></para> +<para>Input: <userinput>char:0x1234</userinput></para> +<para>Output: <computeroutput>ê</computeroutput></para> +<para>Input: <userinput>char:1232</userinput></para> +<para>Output: <computeroutput>ê</computeroutput></para> +</example> + +</listitem> + +</varlistentry> + +<varlistentry> + +<term><command>s///[ig]</command> <command>%s///[ig]</command></term> + +<listitem> +<para>This command does a sed-like search/replace operation on the +current line, or on the whole file (<command>%s///</command>).</para> + +<para>In short, the text is searched for text matching the +<emphasis>search pattern</emphasis>, the regular expression between +the first and the second slash, and when a match is found, the +matching part of the text is replaced with the expression between the +middle and last part of the string. Parentheses in the search pattern +create <emphasis>back references</emphasis>, that is the command +remembers which part of the match matched in the parentheses; these +strings can be reused in the replace pattern, referred to as +<userinput>\1</userinput> for the first set of parentheses, +<userinput>\2</userinput> for the second and so on.</para> + +<para>To search for a literal <literal>(</literal> or +<literal>)</literal>, you need to <emphasis>escape</emphasis> it using +a backslash character: <userinput>\(\)</userinput></para> + +<para>If you put an <userinput>i</userinput> at the end of the +expression, the matching will be case insensitive.</para> + +<example> + +<title>Replacing text in the current line</title> + +<para>Your friendly compiler just stopped, telling you that the class +<classname>myClass</classname> mentioned in line 3902 in your source file +is not defined.</para> + +<para>"Buckle!" you think, it is of course +<classname>MyClass</classname>. You go to line 3902, and instead of trying +to find the word in the text, you launch the Editing Command Dialog, +enter <userinput>s/myclass/MyClass/i</userinput>, hit the +<guibutton>OK</guibutton> button, save the file and compile – +successfully without the error.</para> + +</example> + +<example> +<title>Replacing text in the whole file</title> + +<para>Imagine that you have a file, in which you mention a <quote>Miss +Jensen</quote> several times, when someone comes in and tells you that +she just got married to <quote>Mr Jones</quote>. You want, of course, +to replace each and every occurrence of <quote>Miss Jensen</quote> +with <quote>Ms Jones</quote>.</para> + +<para>Launch the Editing Command dialog, and type into the entry box: +<userinput>%s/Miss Jensen/Ms Jones/</userinput> and hit return, you +are done.</para> + +</example> + +<example> +<title>A More Advanced Example</title> + +<para>This example makes use of <emphasis>back references</emphasis> +as well as a <emphasis>word class</emphasis> (if you do not know what +that is, please refer to the related documentation mentioned +below).</para> + +<para>Suppose you have the following line: + +<programlisting>void MyClass::DoStringOps( String &foo, String &bar String *p, int &a, int &b )</programlisting> +</para> +<para>Now you realize that this is not nice code, and decide that you +want to use the <constant>const</constant> keyword for all +<quote>address of</quote> arguments, those characterized by the & +operator in front of the argument name. You would also like to +simplify the white space, so that there is only 1 whitespace character +between each word.</para> + +<para>Launch the Editing Command Dialog, and enter: +<userinput>s/\s+(\w+)\s+(&)/ const \1 \2/g</userinput> and hit the +<guibutton>OK</guibutton> button. The <userinput>g</userinput> at the end of the expression makes +the regular expression recompile for each match to save the <emphasis>backreferences</emphasis>.</para> + +<para>Output: + +<computeroutput>void MyClass::DoStringOps( const String &foo, const String &bar String *p, const int &a, const int &b )</computeroutput></para> + +<para>Mission completed! Now, what happened? Well, we looked for some +white space (<literal>\s+</literal>) followed by one or more +alphabetic characters (<literal>\w+</literal>) followed by some more +whitespace (<literal>\s+</literal>) followed by an ampersand, and in +the process saved the alphabetic chunk and the ampersand for reuse in +the replace operation. Then we replaced the matching part of our line +with one whitespace followed by <quote>const</quote> followed by one +whitespace followed by our saved alphabetical chunk +(<literal>\1</literal>) followed by one whitespace followed by our +saved ampersand (<literal>\2</literal>)</para> + +<para>Now in some cases the alphabetical chunk was +<quote>String</quote>, in some <quote>int</quote>, so using the +character class <literal>\w</literal> and the <literal>+</literal> +quantifier proved a valuable asset.</para> + +</example> + +</listitem> +</varlistentry> + +</variablelist> + +<warning> +<para>This is extremely powerful, and though the actions can be undone +by calling the +<menuchoice><guimenuitem>Undo</guimenuitem></menuchoice> command +several times (as required) I recommend you practice a bit before +using this command for serious editing if you are not familiar with +<application>sed</application> or perl regular expressions.</para> +</warning> + +</sect1> + +</chapter> |