Table of Contents
This is an old revision of the document!
Regular expressions
(“regexps,” “regexp,” “regex”)
Links to helpful pages
http://www.emacswiki.org/emacs/RegularExpression
https://www.gnu.org/software/emacs/manual/html_node/elisp/Replacing-Match.html
Recipes
Replace single spaces after end of sentence with two spaces in Emacs
<2015.6.24>
Type the following:
[M-x] query-replace-regexp [RET] \. \([A-Z]\) [RET] . \1 [RET]
Emacs replacement trick ADC used when writing SPM table report tool
(from here)
In output file (“taldaemon_i_plus.td.txt” e.g.), AC used emacs regexp (regular expression) to reformat BA's, and just copied a rectangle to get region descriptions:
[M-x] replace-regexp [RET] ^.*Brodmann area.\([0-9]+\).* [RET] BA\1 [RET]
Emacs regexp for removing newline characters from text copied from Adobe PDF file
[Originally from Anthony's science.txt file, entry dated 2015-09-03]
To remove all Windows newlines:
M-x replace-regexp C-q C-j RET RET
To add a newline before heading names, e.g. “I.” or “A.”
M-x replace-regexp .\. RET C-q C-j \& RET
Sort article lists by year using awk and sed
[Originally from Anthony's science.txt file, entry dated 2015-07-18.]
Exported bibliography to clipboard in Zotero, pasted into Emacs to write new file:
…/VNLab/studies/ipsNumMeta/sources_number.txt
Try using awk to print column with year before whole rest of line
$ gawk '{match($0,"\\([0-9]*[a-z]?\\)",a)} {print a[0], $0}' sources_number.txt > sources_number_yearCol.txt
Remove parens from FIRST (year) on a line:
sed -r 's/[(]([0-9]*[a-z]?)[)]/\1/' sources_number_yearCol.txt > sources_number_yearCol_noParens.txt
Used rectangle register copy trick in Emacs to copy only first five chars (catches both 2012 and 2012b) and pasted ultimately to Excel column.