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https://git.lyx.org/repos/lyx.git
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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@32793 a592a061-630c-0410-9148-cb99ea01b6c8
495 lines
11 KiB
Plaintext
495 lines
11 KiB
Plaintext
#LyX 2.0.0svn created this file. For more info see http://www.lyx.org/
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\lyxformat 374
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\begin_document
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\begin_header
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\textclass amsart
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\use_default_options false
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\begin_modules
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theorems-ams
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eqs-within-sections
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figs-within-sections
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\end_modules
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\language english
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\inputencoding auto
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\fontencoding global
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\font_roman default
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\font_sans default
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\font_typewriter default
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\font_default_family default
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\use_xetex false
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\font_sc false
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\font_osf false
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\font_sf_scale 100
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\font_tt_scale 100
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\graphics default
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\default_output_format default
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\bibtex_command default
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\index_command default
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\paperfontsize default
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\spacing single
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\use_hyperref false
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\papersize default
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\use_geometry false
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\use_amsmath 1
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\use_esint 1
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\use_mhchem 1
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\cite_engine basic
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\use_bibtopic false
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\use_indices false
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\paperorientation portrait
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\suppress_date false
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\index Index
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\shortcut idx
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\color #008000
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\end_index
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\secnumdepth 3
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\tocdepth 3
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\paragraph_separation indent
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\paragraph_indentation default
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\quotes_language english
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\papercolumns 1
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\papersides 1
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\paperpagestyle default
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\tracking_changes false
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\output_changes false
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\html_use_mathml true
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\html_be_strict true
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\end_header
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\begin_body
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\begin_layout Title
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Advanced Find&Replace
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\begin_inset Foot
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status collapsed
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\begin_layout Plain Layout
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This document is currently maintained by Tommaso Cucinotta, the main developer
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of this feature at the moment.
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For suggestions, comments or clarification requests regarding this document,
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as well as for notifying possible issues or bugs arising from the use of
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this feature, please use the standard support channels of LyX (i.e., bug
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tracking and mailing lists).
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\end_layout
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\end_inset
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\end_layout
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\begin_layout Author
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by the LyX Team
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\end_layout
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\begin_layout Section
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Introduction
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\end_layout
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\begin_layout Standard
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The Advanced Find&Replace feature of LyX allows for searching of complex,
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format-sensitive text segments and mathematics contents within LyX documents.
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This constitutes an enhancement of the standard (quick) Find&Replace feature.
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\end_layout
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\begin_layout Standard
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The set of capabilities of the
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\begin_inset Quotes eld
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\end_inset
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Find
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\begin_inset Quotes erd
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\end_inset
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part of the enhanced Find&Replace feature may be summarised as follows:
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\end_layout
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\begin_layout Itemize
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the text to search for is entered by means of a full-featured LyX mini-editor;
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\end_layout
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\begin_layout Itemize
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searching of the entered text occurs both within text and within mathematical
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formulas possibly present in the document;
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\end_layout
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\begin_layout Itemize
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both searching of text and of mathematical formulas is allowed, where the
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latter is done by entering mathematics in the usual way the LyX user is
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accustomed to do; not only entire mathematical formulas are found, but
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also parts occurring within more complex formulas;
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\end_layout
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\begin_layout Itemize
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both case-sensitive and case-insensitive search is possible;
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\end_layout
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\begin_layout Itemize
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search may be restricted so as to match only at word-boundaries;
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\end_layout
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\begin_layout Itemize
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search may be format-insensitive, so that the searched text is found in
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any context/style (standard text, section headings, notes, and even mathematics
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), or it may be format-sensitive, so that, for example, a word entered with
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a section heading will only be found within section headings.
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\end_layout
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\begin_layout Standard
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The set of capabilities related to the
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\begin_inset Quotes eld
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\end_inset
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Replace
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\begin_inset Quotes erd
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\end_inset
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part of the Find&Replace feature may be summarised as follows:
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\end_layout
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\begin_layout Itemize
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the replaced text may be entered by means of a full-featured LyX mini-editor;
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\end_layout
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\begin_layout Itemize
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replace may optionally preserve capitalisation, so that the replaced text
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capitalisation is adapted so as to mimic the one of the matching text (i.e.,
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all lowercase, all uppercase, first uppercase followed by lowercase).
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\end_layout
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\begin_layout Standard
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The Advanced Find&Replace feature is activated with a set of default options
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which is suitable for the most common needs.
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A detailed discussion of the available options follows in Sections
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\begin_inset space ~
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\end_inset
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\begin_inset CommandInset ref
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LatexCommand ref
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reference "sec:Basic-usage"
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\end_inset
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and
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\begin_inset space ~
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\end_inset
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\begin_inset CommandInset ref
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LatexCommand ref
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reference "sec:Advanced-usage"
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\end_inset
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.
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\end_layout
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\begin_layout Section
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\begin_inset CommandInset label
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LatexCommand label
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name "sec:Basic-usage"
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\end_inset
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Basic usage
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\end_layout
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\begin_layout Standard
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The advanced Find&Replace feature of LyX is activated through the [C-S-f]
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sequence (Ctrl+Shift+f), or through the
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\noun on
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Edit->Find&Replace (Advanced)
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\noun default
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menù item.
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\end_layout
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\begin_layout Subsection
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Searching for text
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\end_layout
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\begin_layout Standard
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Enter into the
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\noun on
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Find...
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\noun default
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LyX mini-editor a simple word, and search for occurrences of it by pushing
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the
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\noun on
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Next
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\noun default
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button below it (or just pressing
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\noun on
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[Return]
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\noun default
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or
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\noun on
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[Enter
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\noun default
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]).
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The entered word is found both in text mode and in math mode, and both
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in emphasized, bold or normal face, and both in section titles and in standard
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text.
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Pressing repeatedly
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\noun on
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[Enter]
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\noun default
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keeps searching forward.
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Similarly, pressing
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\noun on
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[Shift+Enter]
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\noun default
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searches for the entered text backwards.
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\end_layout
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\begin_layout Subsection
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Searching for mathematics
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\end_layout
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\begin_layout Standard
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Mathematical formulas may be searched for by typing in the
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\noun on
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Find...
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\noun default
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mini-editor a mathematical formula, such as
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\begin_inset Formula $x^{2}$
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\end_inset
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or also something more complex like
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\begin_inset Formula $\frac{x^{2}}{1+x^{2}}$
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\end_inset
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.
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When searching for such formula, it is found both when it is alone and
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when it occurs in subformulas and nested parts of subformulas, for example
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the mentioned segments would be found in something like
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\begin_inset Formula $\frac{x^{2}}{\sqrt{\frac{x^{2}}{1+x^{2}}}}.$
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\end_inset
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\end_layout
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\begin_layout Subsection
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Style-aware search
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\end_layout
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\begin_layout Standard
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It is also possible to search for text with specific styles.
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This is done by switching to the
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\noun on
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Advanced
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\noun default
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pane and unchecking the
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\noun on
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ignore format
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\noun default
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option.
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This way:
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\end_layout
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\begin_layout Enumerate
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Entering in the
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\noun on
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Find...
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\noun default
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LyX mini-editor a plain word and searching for it would not find instances
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of the word occurring in emphasized or boldface.
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\end_layout
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\begin_layout Enumerate
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Entering in the
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\noun on
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Find...
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\noun default
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LyX mini-editor an emphasized or boldface word and searching for it would
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find the respective instances with same face only, and within the same
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text style only.
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Note that, for example, an emphasized text is found not only when occurring
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alone, but also when it is contained in a longer emphasized sentence.
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\end_layout
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\begin_layout Enumerate
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Entering in the
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\noun on
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Find...
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\noun default
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LyX mini-editor a plain word and giving it a Section style from the style
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selection dropdown menu, and searching for it, finds occurrences of if
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only within Section titles.
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Also, if the text to search is given an emphasized or bold face, in addition
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to a
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\noun on
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Section
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\noun default
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style, then it is found only when occurring with the same style.
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\end_layout
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\begin_layout Enumerate
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Entering in the
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\noun on
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Find...
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\noun default
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LyX mini-editor some mathematics in centered line math (C-S-m) mode, like
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this
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\begin_inset Formula \[
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x^{2}\]
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\end_inset
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finds only instances of the text within the same kind of mathematical environmen
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t.
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\end_layout
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\begin_layout Section
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\begin_inset CommandInset label
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LatexCommand label
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name "sec:Advanced-usage"
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\end_inset
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Advanced usage
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\end_layout
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\begin_layout Subsection
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About using regular expressions in the Find...
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box
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\end_layout
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\begin_layout Standard
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There is a regular expression based searching facility.
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Users may arbitrarily insert, within text or math material to search for,
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regexp-mode insets that allow to enter regular subexpressions.
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This is done either through the
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\noun on
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[Match...]
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\noun default
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dropdown button or by typing [C-S-r].
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Characters entered in the
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\noun on
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Find...
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\noun default
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LyX mini-editor within regexp insets are matched according to the regular
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expression matching rules
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\begin_inset Foot
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status collapsed
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\begin_layout Plain Layout
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but under the constraint that any subexpression must match a well-formed
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LyX text segment, i.e., when matching LaTeX code, no segments with unbalanced
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{} braces are allowed to match subexpressions entered by the user.
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\end_layout
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\end_inset
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, while text entered outside regexp insets is matched exactly against the
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same text in the document.
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Note that it is allowed to cut and paste regexp-mode insets as usual.
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Examples of using such a feature may be:
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\end_layout
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\begin_layout Enumerate
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Searching for all fractions with a given denominator: for example, entering
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in the
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\noun on
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Find...
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\noun default
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LyX mini-editor the fraction
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\begin_inset Formula $\frac{.*}{1+x^{2}}$
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\end_inset
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, where the
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\begin_inset Formula $.*$
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\end_inset
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on the numerator is the match-everything regular expression that may be
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added by pressing the
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\noun on
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[Match...]->[Anything]
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\noun default
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button, or entering the regexp-mode through C-S-r and by typing
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\begin_inset Formula $.*$
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\end_inset
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, finds all fractions with the given denominator.
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\end_layout
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\begin_layout Enumerate
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Searching for all text with a given style: for example, after unchecking
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the
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\noun on
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Ignore Format
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\noun default
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option from the
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\noun on
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Advanced
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\noun default
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pane, entering a
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\series bold
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\begin_inset Formula $.*$
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\end_inset
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\series default
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regular expression and adding it an emphasized or bold face, finds all
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emphasized and bold face text, respectively.
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Also, giving to the
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\begin_inset Formula $.*$
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\end_inset
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regular expression a bullet-list, enumerated or Section style, you can
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find all bullet or enumerated lists, or section titles.
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\end_layout
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\begin_layout Standard
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Finally, references to subexpressions in regular expressions may be used
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as usual, enclosing parts of the expression within round braces
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\begin_inset Formula $()$
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\end_inset
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, and referring back to them through
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\begin_inset Formula $\backslash1$
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\end_inset
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,
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\begin_inset Formula $\backslash2$
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\end_inset
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, etc..., where a
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\begin_inset Formula $\backslash$
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\end_inset
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symbol is entered in regular-expression mode by pressing twice the backslash
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key.
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For example, try searching for the
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\begin_inset Formula $([a-z]+)[[:blank:]]\backslash1$
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\end_inset
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regular expression in order to find word repetitions, if any.
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\end_layout
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\begin_layout Standard
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Note that back references work both when occurring within the same regular
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expression, and when occurring in multiple different regular expressions,
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where numbering of back-referenced sub-expressions is absolute, i.e.,
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\begin_inset Formula $\backslash1$
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\end_inset
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always refers to the first occurrence of
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\begin_inset Formula $()$
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\end_inset
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in all entered regular expressions.
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\end_layout
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\end_body
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\end_document
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