Regular Expressions 101

(?i)applies the following effective flags to the remainder of the pattern: gmi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

^start of line

Group 1(table|figure)

1st Alternativetable

tablethe literal text table (case insensitive)

2nd Alternativefigure

figurethe literal text figure (case insensitive)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?i)^(table|figure)

New

Table 1. Findings.                    # Matches.

This header contains a table.         # Does not match; 'table' is not at the beginning.

figure 1. An illustrative diagram.    # Matches, thanks to the case-insensitive modifier.
TABLE 2: Limitations.                 # Matches, thanks to the case-insensitive modifier.

Regular Expression

Extraction