84 lines
3.9 KiB
HTML
84 lines
3.9 KiB
HTML
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<title>Modifiers - Debugging with GDB</title>
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<a name="Modifiers"></a>
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<p>
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Previous: <a rel="previous" accesskey="p" href="Word-Designators.html#Word-Designators">Word Designators</a>,
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Up: <a rel="up" accesskey="u" href="History-Interaction.html#History-Interaction">History Interaction</a>
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<h4 class="subsection">33.1.3 Modifiers</h4>
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<p>After the optional word designator, you can add a sequence of one or more
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of the following modifiers, each preceded by a ‘<samp><span class="samp">:</span></samp>’.
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<dl>
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<dt><code>h</code><dd>Remove a trailing pathname component, leaving only the head.
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<br><dt><code>t</code><dd>Remove all leading pathname components, leaving the tail.
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<br><dt><code>r</code><dd>Remove a trailing suffix of the form ‘<samp><span class="samp">.</span><var>suffix</var></samp>’, leaving
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the basename.
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<br><dt><code>e</code><dd>Remove all but the trailing suffix.
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<br><dt><code>p</code><dd>Print the new command but do not execute it.
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<br><dt><code>s/</code><var>old</var><code>/</code><var>new</var><code>/</code><dd>Substitute <var>new</var> for the first occurrence of <var>old</var> in the
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event line. Any delimiter may be used in place of ‘<samp><span class="samp">/</span></samp>’.
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The delimiter may be quoted in <var>old</var> and <var>new</var>
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with a single backslash. If ‘<samp><span class="samp">&</span></samp>’ appears in <var>new</var>,
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it is replaced by <var>old</var>. A single backslash will quote
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the ‘<samp><span class="samp">&</span></samp>’. The final delimiter is optional if it is the last
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character on the input line.
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<br><dt><code>&</code><dd>Repeat the previous substitution.
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<br><dt><code>g</code><dt><code>a</code><dd>Cause changes to be applied over the entire event line. Used in
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conjunction with ‘<samp><span class="samp">s</span></samp>’, as in <code>gs/</code><var>old</var><code>/</code><var>new</var><code>/</code>,
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or with ‘<samp><span class="samp">&</span></samp>’.
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<br><dt><code>G</code><dd>Apply the following ‘<samp><span class="samp">s</span></samp>’ modifier once to each word in the event.
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</dl>
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</body></html>
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