Lugaru's Epsilon
Editor 14.04

Epsilon User's Manual and Reference
   Commands by Topic
      . . .
      Moving Around
         Simple Movement Commands
         Moving in Larger Units
         . . .
         Comparing Many Files
      Changing Text
         . . .
         Rectangle Commands
         Regular Expressions
         . . .
      Language Modes
         Asm Mode
         Batch Mode
         C Mode
         . . .
         Visual Basic Mode
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Capitalization  Commands by Topic   Regular Expressions

Epsilon User's Manual and Reference > Commands by Topic > Changing Text >


The key Alt-& runs the command replace-string, and allows you to change all occurrences of a string in the rest of your document to another string. Epsilon prompts for the string to replace, and what to replace it with. Terminate the strings with <Enter>. After you enter both strings, Epsilon replaces all occurrences of the first string after point with instances of the second string (but respecting any narrowing restriction; see Miscellaneous).

When entering the string to search for, you can use any of the searching subcommands described in Searching: Ctrl-c toggles case-folding, Ctrl-w toggles word searching, and Ctrl-t toggles interpreting the string as a regular expression.

To enter special characters in either the search or replace strings, use Ctrl-q before each. Type Ctrl-q Ctrl-c to include a Ctrl-c character. Type Ctrl-q Ctrl-j to include a <Newline> character in a search string or replacement text. Press Alt-g when entering the replacement string to copy the search string.

The key Alt-r runs the command query-replace, which works like replace-string. Instead of replacing everything automatically, however, the command positions point after each occurrence of the old string and waits for you to press a key. You may choose whether to replace this occurrence or not:

y or Y or <Space>
Replace it, go on to next occurrence.

n or N or <Backspace>
Don't replace it, go on to next occurrence.

Replace all remaining occurrences. The replace-string command works like the query-replace command followed by pressing "!" when it shows you the first match.

Exit and leave point at the match in the buffer.

Back up to the previous match.

Replace this occurrence and then exit.

Replace and wait for another command option without going on to the next match.

Enter a recursive edit. Point and mark go around the match. You may edit arbitrarily. When you exit the recursive edit with Ctrl-x Ctrl-z, Epsilon restores the old mark, and the query-replace continues from the current location.

Exit and restore point to its original location.

Toggle regular expression searching. See the next section for an explanation of regular expressions.

Toggle word searching.

Toggle case folding.

? or help key
Provide help, including a list of these options.

anything else
Exit the replacement, staying at the current location, and execute this key as a command.

The command regex-replace operates like query-replace, but starts up in regular expression mode. See Regular Expression Commands.

The command reverse-replace operates like query-replace, but moves backwards. You can also trigger a reverse replacement by pressing Ctrl-r while entering the search text for any of the replacing commands.

If you invoke any of the replacing commands above with a numeric argument, Epsilon will use word searching.

If you highlight a region before replacing, Epsilon uses it as an initial search string if it's not very long. Set the replace-in-region variable to make Epsilon instead restrict its replacements to the highlighted region. Also see the search-defaults-from variable.

Replace commands preserve case. Epsilon examines the case of each match. If a match is entirely upper case, or all words are capitalized, Epsilon makes the replacement text entirely upper case or capitalized, as appropriate. Epsilon only does this when searching is case-insensitive, and neither the search string nor the replace string contain upper case letters. For example, if you search for the regular expression welcome|hello and replace it with greetings, Epsilon replaces HELLO with GREETINGS and Welcome with Greetings. See the replace-by-case variable to alter the rules Epsilon uses. With a regular expression replace, you can force parts of the replacement to a particular case; see Regular Expression Commands.

The file-query-replace command on Shift-F7 replaces text in multiple files. It prompts for the search text, replacement text, and a file name which may contain wildcards. You can use extended file patterns to replace in files from multiple directories; see Extended file patterns. Epsilon skips over any file with an extension listed in grep-ignore-file-extensions or meeting other criteria, just like the grep command. See Searching Multiple Files for details. To search without replacing, see the grep command in Searching Multiple Files.

With a numeric argument, this command searches through buffers instead of files. Instead of prompting for a file name pattern, Epsilon prompts for a buffer name pattern, and only operates on those buffers whose names match that pattern. Buffer name patterns use a simplified file name pattern syntax: * matches zero or more characters, ? matches any single character, and character classes like [a-z] may be used too.

The command delete-matching-lines prompts for a regular expression pattern. It then deletes all lines after point in the current buffer that contain the pattern. The similar command keep-matching-lines deletes all lines except those that contain the pattern. As with any searching command, you can press Ctrl-t, Ctrl-w, or Ctrl-c while typing the pattern to toggle regular expression mode, word mode, or case folding (respectively).

When you select a replacing command from the menu or tool bar (rather than via a command's keyboard binding), Epsilon for Windows runs the dialog-replace or dialog-regex-replace command, to display a replace dialog. Controls on the dialog replace many of the keys described above.

Standard bindings:

  Alt-&  replace-string
 Alt-r, Alt-%  query-replace
 Shift-F7  file-query-replace
 Alt-*  regex-replace

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Lugaru Epsilon Programmer's Editor 14.04 manual. Copyright (C) 1984, 2021 by Lugaru Software Ltd. All rights reserved.