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Doc: Using pattern substitution when expanding variables

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Change-Id: Ifaf8dddf7b5991d6b472d80cb9e94f42de75c1e7
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
This commit is contained in:
Leena Miettinen
2016-10-24 10:29:13 +02:00
committed by Orgad Shaneh
parent ff2c49538b
commit 6032847c8d
1 changed files with 24 additions and 0 deletions
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doc/src/projects/creator-projects-settings-build.qdoc
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@@ -111,6 +111,30 @@
(\uicontrol {Variables}) button in a field to select from a list of variables that (\uicontrol {Variables}) button in a field to select from a list of variables that
are available in a particular context. are available in a particular context.
\QC uses pattern substitution when expanding variable names. To replace the
first match of \e pattern within \e variable with \e replacement, use:
\badcode
%{variable/pattern/replacement}
\endcode
To replace all matches of \e pattern within \e variable with \e replacement,
use:
\badcode
%{variable//pattern/replacement}
\endcode
The pattern can be a regular expression and the replacement can contain
backreferences. For example, if \c %{variable} is \c my123var, then
\c %{variable/(..)(\d+)/\2\1} is expanded to \c {123myvar}.
To use the default value if the variable is not set, use:
\badcode
%{variable:-default}
\endcode
\section1 Build Steps \section1 Build Steps
The build system of \QC is built on qmake and make. In \uicontrol{Build Steps} you The build system of \QC is built on qmake and make. In \uicontrol{Build Steps} you